Fix migrate to new database error

update changelog
fix init KeyError (#61 )
2020-10-14 20:33:23 +08:00 · 2020-10-12 21:01:53 +08:00 · 2020-10-12 20:59:13 +08:00 · 2020-10-10 15:07:09 +08:00 · 2020-10-09 15:41:37 +08:00 · 2020-10-09 15:34:48 +08:00
22 changed files with 726 additions and 537 deletions
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -0,0 +1,106 @@
+# ChangeLog
+
+## 0.3
+
+### 0.3.2
+
+- Fix migrate to new database error. (#62)
+
+### 0.3.1
+
+- Fix first version error.
+- Fix init error. (#61)
+
+### 0.3.0
+
+- Refactoring migrate logic, and this version is not compatible with previous version.
+- Now there don't need `old_models.py` and it store in database.
+- Upgrade steps:
+  1. Upgrade aerich version.
+  2. Drop aerich table in database.
+  3. Delete `migrations/{app}` folder and rerun `aerich init-db`.
+  4. Update model and `aerich migrate` normally.
+
+## 0.2
+
+### 0.2.5
+
+- Fix windows support. (#46)
+- Support `db_constraint` in fk, m2m should manual define table with fk. (#52)
+
+### 0.2.4
+
+- Raise error with SQLite unsupported features.
+- Fix Postgres alter table. (#48)
+- Add `Rename` support.
+
+### 0.2.3
+
+- Fix tortoise ssl config.
+- PostgreSQL add/drop index/unique.
+
+### 0.2.2
+
+- Fix postgres drop fk.
+- Fix version sort.
+
+### 0.2.1
+
+- Fix bug in windows.
+- Enhance PostgreSQL support.
+
+### 0.2.0
+
+- Update model file find method.
+- Set `--safe` bool.
+
+## 0.1
+
+### 0.1.9
+
+- Fix default_connection when upgrade
+- Find default app instead of default.
+- Diff MySQL ddl.
+- Check tortoise config.
+
+### 0.1.8
+
+- Fix upgrade error when migrate.
+- Fix init db sql error.
+- Support change column.
+
+### 0.1.7
+
+- Exclude models.Aerich.
+- Add init record when init-db.
+- Fix version num str.
+
+### 0.1.6
+
+- update dependency_links
+
+### 0.1.5
+
+- Add sqlite and postgres support.
+- Fix dependency import.
+- Store versions in db.
+
+### 0.1.4
+
+- Fix transaction and fields import.
+- Make unique index worked.
+- Add cli --version.
+
+### 0.1.3
+
+- Support indexes and unique_together.
+
+### 0.1.2
+
+- Now aerich support m2m.
+- Add cli cmd init-db.
+- Change cli options.
+
+### 0.1.1
+
+- Now aerich is basic worked.
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -1,71 +0,0 @@
-=========
-ChangeLog
-=========
-0.2
-===
-
-0.2.2
-----
- Fix postgres drop fk.
- Fix version sort.
-
-0.2.1
-----
- Fix bug in windows.
- Enhance PostgreSQL support.
-
-0.2.0
-----
- Update model file find method.
- Set ``--safe`` bool.
-
-0.1
-===
-0.1.9
-----
- Fix default_connection when upgrade
- Find default app instead of default.
- Diff MySQL ddl.
- Check tortoise config.
-
-0.1.8
-----
- Fix upgrade error when migrate.
- Fix init db sql error.
- Support change column.
-
-0.1.7
-----
- Exclude models.Aerich.
- Add init record when init-db.
- Fix version num str.
-
-0.1.6
-----
- update dependency_links
-
-0.1.5
-----
- Add sqlite and postgres support.
- Fix dependency import.
- Store versions in db.
-
-0.1.4
-----
- Fix transaction and fields import.
- Make unique index worked.
- Add cli --version.
-
-0.1.3
-----
- Support indexes and unique_together.
-
-0.1.2
-----
- Now aerich support m2m.
- Add cli cmd init-db.
- Change cli options.
-
-0.1.1
-----
- Now aerich is basic worked.
--- a/9
+++ b/9
@@ -40,17 +40,14 @@ test_sqlite:
 	$(py_warn) TEST_DB=sqlite://:memory: py.test

 test_mysql:
-	$(py_warn) TEST_DB="mysql://root:$(MYSQL_PASS)@$(MYSQL_HOST):$(MYSQL_PORT)/test_\{\}" py.test
+	$(py_warn) TEST_DB="mysql://root:$(MYSQL_PASS)@$(MYSQL_HOST):$(MYSQL_PORT)/test_\{\}" pytest -vv -s

 test_postgres:
-	$(py_warn) TEST_DB="postgres://postgres:$(POSTGRES_PASS)@$(POSTGRES_HOST):$(POSTGRES_PORT)/test_\{\}" py.test
+	$(py_warn) TEST_DB="postgres://postgres:$(POSTGRES_PASS)@$(POSTGRES_HOST):$(POSTGRES_PORT)/test_\{\}" pytest

 testall: deps test_sqlite test_postgres test_mysql

 build: deps
 	@poetry build

-publish: deps
-	@poetry publish --build
-
-ci: check testall
+ci: check testall
--- a/README.md
+++ b/README.md
@@ -5,16 +5,12 @@
 [![image](https://github.com/long2ice/aerich/workflows/pypi/badge.svg)](https://github.com/long2ice/aerich/actions?query=workflow:pypi)
 [![image](https://github.com/long2ice/aerich/workflows/test/badge.svg)](https://github.com/long2ice/aerich/actions?query=workflow:test)

-<a href="https://tracking.gitads.io/?repo=aerich"><img src="https://images.gitads.io/aerich" alt="GitAds"/></a>
-
 ## Introduction

-Tortoise-ORM is the best asyncio ORM now, but it lacks a database
-migrations tool like alembic for SQLAlchemy, or Django ORM with it\'s
-own migrations tool.
+Aerich is a database migrations tool for Tortoise-ORM, which like alembic for SQLAlchemy, or Django ORM with it\'s
+own migrations solution.

-This project aim to be a best migrations tool for Tortoise-ORM and which
-written by one of contributors of Tortoise-ORM.
+**If you upgrade aerich from <= 0.2.5 to >= 0.3.0, see [changelog](https://github.com/tortoise/aerich/blob/dev/CHANGELOG.md) for upgrade steps.**

 ## Install

@@ -27,7 +23,7 @@ Just install from pypi:
 ## Quick Start

 ```shell
-$ aerich -h
+> aerich -h

 Usage: aerich [OPTIONS] COMMAND [ARGS]...

@@ -39,7 +35,7 @@ Options:
  -h, --help         Show this message and exit.

 Commands:
-  downgrade  Downgrade to previous version.
+  downgrade  Downgrade to specified version.
  heads      Show current available heads in migrate location.
  history    List all migrate items.
  init       Init config file and generate root migrate location.
@@ -68,7 +64,7 @@ TORTOISE_ORM = {
 ### Initialization

 ```shell
-$ aerich init -h
+> aerich init -h

 Usage: aerich init [OPTIONS]

@@ -84,7 +80,7 @@ Options:
 Init config file and location:

 ```shell
-$ aerich init -t tests.backends.mysql.TORTOISE_ORM
+> aerich init -t tests.backends.mysql.TORTOISE_ORM

 Success create migrate location ./migrations
 Success generate config file aerich.ini
@@ -93,56 +89,66 @@ Success generate config file aerich.ini
 ### Init db

 ```shell
-$ aerich init-db
+> aerich init-db

 Success create app migrate location ./migrations/models
 Success generate schema for app "models"
 ```

-::: {.note}
-::: {.title}
-Note
-:::
-
 If your Tortoise-ORM app is not default `models`, you must specify
 `--app` like `aerich --app other_models init-db`.
-:::

 ### Update models and make migrate

 ```shell
-$ aerich migrate --name drop_column
+> aerich migrate --name drop_column

 Success migrate 1_202029051520102929_drop_column.json
 ```

 Format of migrate filename is
-`{version_num}_{datetime}_{name|update}.json`
+`{version_num}_{datetime}_{name|update}.json`.
+
+And if `aerich` guess you are renaming a column, it will ask `Rename {old_column} to {new_column} [True]`, you can choice `True` to rename column without column drop, or choice `False` to drop column then create.
+
+If you use `MySQL`, only MySQL8.0+ support `rename..to` syntax.

 ### Upgrade to latest version

 ```shell
-$ aerich upgrade
+> aerich upgrade

 Success upgrade 1_202029051520102929_drop_column.json
 ```

 Now your db is migrated to latest.

-### Downgrade to previous version
+### Downgrade to specified version

 ```shell
-$ aerich downgrade
+> aerich init -h
+
+Usage: aerich downgrade [OPTIONS]
+
+  Downgrade to specified version.
+
+Options:
+  -v, --version INTEGER  Specified version, default to last.  [default: -1]
+  -h, --help             Show this message and exit.
+```
+
+```shell
+> aerich downgrade

 Success downgrade 1_202029051520102929_drop_column.json
 ```

-Now your db rollback to previous version.
+Now your db rollback to specified version.

 ### Show history

 ```shell
-$ aerich history
+> aerich history

 1_202029051520102929_drop_column.json
 ```
@@ -150,33 +156,19 @@ $ aerich history
 ### Show heads to be migrated

 ```shell
-$ aerich heads
+> aerich heads

 1_202029051520102929_drop_column.json
 ```

-## Limitations
-
- Not support `rename column` now.
- `Sqlite` and `Postgres` may not work as expected because I don\'t
-  use those in my work.
-
 ## Support this project

 - Just give a star!
 - Donation.

-### AliPay
-
-<img width="200" src="https://github.com/long2ice/aerich/raw/dev/images/alipay.jpeg"/>
-
-### WeChat Pay
-
-<img width="200" src="https://github.com/long2ice/aerich/raw/dev/images/wechatpay.jpeg"/>
-
-### PayPal
-
-Donate money by [paypal](https://www.paypal.me/long2ice) to my account long2ice.
+| AliPay                                                                                 | WeChatPay                                                                                 | PayPal                                                           |
+| -------------------------------------------------------------------------------------- | ----------------------------------------------------------------------------------------- | ---------------------------------------------------------------- |
+| <img width="200" src="https://github.com/long2ice/aerich/raw/dev/images/alipay.jpeg"/> | <img width="200" src="https://github.com/long2ice/aerich/raw/dev/images/wechatpay.jpeg"/> | [PayPal](https://www.paypal.me/long2ice) to my account long2ice. |

 ## License

--- a/aerich/init.py
+++ b/aerich/init.py
@@ -1 +1 @@
-__version__ = "0.2.2"
+__version__ = "0.3.2"
--- a/aerich/cli.py
+++ b/aerich/cli.py
@@ -1,12 +1,12 @@
-import functools
+import asyncio
 import json
 import os
 import sys
 from configparser import ConfigParser
-from enum import Enum
+from functools import wraps

-import asyncclick as click
-from asyncclick import Context, UsageError
+import click
+from click import Context, UsageError
 from tortoise import Tortoise, generate_schema_for_client
 from tortoise.exceptions import OperationalError
 from tortoise.transactions import in_transaction
@@ -16,26 +16,23 @@ from aerich.migrate import Migrate
 from aerich.utils import get_app_connection, get_app_connection_name, get_tortoise_config

 from . import __version__
+from .enums import Color
 from .models import Aerich

-
-class Color(str, Enum):
-    green = "green"
-    red = "red"
-    yellow = "yellow"
-
-
 parser = ConfigParser()


-def close_db(func):
-    @functools.wraps(func)
-    async def close_db_inner(*args, **kwargs):
-        result = await func(*args, **kwargs)
-        await Tortoise.close_connections()
-        return result
+def coro(f):
+    @wraps(f)
+    def wrapper(*args, **kwargs):
+        loop = asyncio.get_event_loop()
+        ctx = args[0]
+        loop.run_until_complete(f(*args, **kwargs))
+        app = ctx.obj.get("app")
+        if app:
+            Migrate.remove_old_model_file(app, ctx.obj["location"])

-    return close_db_inner
+    return wrapper


@click.group(context_settings={"help_option_names": ["-h", "--help"]})
@@ -52,6 +49,7 @@ def close_db(func):
    help="Name of section in .ini file to use for aerich config.",
 )
@click.pass_context
+@coro
 async def cli(ctx: Context, config, app, name):
    ctx.ensure_object(dict)
    ctx.obj["config_file"] = config
@@ -73,7 +71,7 @@ async def cli(ctx: Context, config, app, name):
        ctx.obj["config"] = tortoise_config
        ctx.obj["location"] = location
        ctx.obj["app"] = app
-
+        Migrate.app = app
        if invoked_subcommand != "init-db":
            await Migrate.init_with_old_models(tortoise_config, app, location)

@@ -81,72 +79,89 @@ async def cli(ctx: Context, config, app, name):
@cli.command(help="Generate migrate changes file.")
@click.option("--name", default="update", show_default=True, help="Migrate name.")
@click.pass_context
-@close_db
+@coro
 async def migrate(ctx: Context, name):
-    config = ctx.obj["config"]
-    location = ctx.obj["location"]
-    app = ctx.obj["app"]
-
    ret = await Migrate.migrate(name)
    if not ret:
        return click.secho("No changes detected", fg=Color.yellow)
-    Migrate.write_old_models(config, app, location)
    click.secho(f"Success migrate {ret}", fg=Color.green)


-@cli.command(help="Upgrade to latest version.")
+@cli.command(help="Upgrade to specified version.")
@click.pass_context
-@close_db
+@coro
 async def upgrade(ctx: Context):
    config = ctx.obj["config"]
    app = ctx.obj["app"]
+    location = ctx.obj["location"]
    migrated = False
-    for version in Migrate.get_all_version_files():
+    for version_file in Migrate.get_all_version_files():
        try:
-            exists = await Aerich.exists(version=version, app=app)
+            exists = await Aerich.exists(version=version_file, app=app)
        except OperationalError:
            exists = False
        if not exists:
            async with in_transaction(get_app_connection_name(config, app)) as conn:
-                file_path = os.path.join(Migrate.migrate_location, version)
+                file_path = os.path.join(Migrate.migrate_location, version_file)
                with open(file_path, "r", encoding="utf-8") as f:
                    content = json.load(f)
                    upgrade_query_list = content.get("upgrade")
                    for upgrade_query in upgrade_query_list:
                        await conn.execute_script(upgrade_query)
-                await Aerich.create(version=version, app=app)
-            click.secho(f"Success upgrade {version}", fg=Color.green)
+                await Aerich.create(
+                    version=version_file,
+                    app=app,
+                    content=Migrate.get_models_content(config, app, location),
+                )
+            click.secho(f"Success upgrade {version_file}", fg=Color.green)
            migrated = True
    if not migrated:
        click.secho("No migrate items", fg=Color.yellow)


-@cli.command(help="Downgrade to previous version.")
+@cli.command(help="Downgrade to specified version.")
+@click.option(
+    "-v",
+    "--version",
+    default=-1,
+    type=int,
+    show_default=True,
+    help="Specified version, default to last.",
+)
@click.pass_context
-@close_db
-async def downgrade(ctx: Context):
+@coro
+async def downgrade(ctx: Context, version: int):
    app = ctx.obj["app"]
    config = ctx.obj["config"]
-    last_version = await Migrate.get_last_version()
-    if not last_version:
-        return click.secho("No last version found", fg=Color.yellow)
-    file = last_version.version
-    async with in_transaction(get_app_connection_name(config, app)) as conn:
-        file_path = os.path.join(Migrate.migrate_location, file)
-        with open(file_path, "r", encoding="utf-8") as f:
-            content = json.load(f)
-            downgrade_query_list = content.get("downgrade")
-            if not downgrade_query_list:
-                return click.secho("No downgrade item found", fg=Color.yellow)
-            for downgrade_query in downgrade_query_list:
-                await conn.execute_query(downgrade_query)
-            await last_version.delete()
-        return click.secho(f"Success downgrade {file}", fg=Color.green)
+    if version == -1:
+        specified_version = await Migrate.get_last_version()
+    else:
+        specified_version = await Aerich.filter(app=app, version__startswith=f"{version}_").first()
+    if not specified_version:
+        return click.secho("No specified version found", fg=Color.yellow)
+    if version == -1:
+        versions = [specified_version]
+    else:
+        versions = await Aerich.filter(app=app, pk__gte=specified_version.pk)
+    for version in versions:
+        file = version.version
+        async with in_transaction(get_app_connection_name(config, app)) as conn:
+            file_path = os.path.join(Migrate.migrate_location, file)
+            with open(file_path, "r", encoding="utf-8") as f:
+                content = json.load(f)
+                downgrade_query_list = content.get("downgrade")
+                if not downgrade_query_list:
+                    return click.secho("No downgrade item found", fg=Color.yellow)
+                for downgrade_query in downgrade_query_list:
+                    await conn.execute_query(downgrade_query)
+                await version.delete()
+            os.unlink(file_path)
+            click.secho(f"Success downgrade {file}", fg=Color.green)


@cli.command(help="Show current available heads in migrate location.")
@click.pass_context
-@close_db
+@coro
 async def heads(ctx: Context):
    app = ctx.obj["app"]
    versions = Migrate.get_all_version_files()
@@ -156,12 +171,12 @@ async def heads(ctx: Context):
            click.secho(version, fg=Color.green)
            is_heads = True
    if not is_heads:
-        click.secho("No available heads,try migrate", fg=Color.green)
+        click.secho("No available heads,try migrate first", fg=Color.green)


@cli.command(help="List all migrate items.")
@click.pass_context
-@close_db
+@coro
 async def history(ctx: Context):
    versions = Migrate.get_all_version_files()
    for version in versions:
@@ -181,6 +196,7 @@ async def history(ctx: Context):
    "--location", default="./migrations", show_default=True, help="Migrate store location."
 )
@click.pass_context
+@coro
 async def init(
    ctx: Context, tortoise_orm, location,
 ):
@@ -212,7 +228,7 @@ async def init(
    show_default=True,
 )
@click.pass_context
-@close_db
+@coro
 async def init_db(ctx: Context, safe):
    config = ctx.obj["config"]
    location = ctx.obj["location"]
@@ -225,8 +241,6 @@ async def init_db(ctx: Context, safe):
    else:
        return click.secho(f"Inited {app} already", fg=Color.yellow)

-    Migrate.write_old_models(config, app, location)
-
    await Tortoise.init(config=config)
    connection = get_app_connection(config, app)
    await generate_schema_for_client(connection, safe)
@@ -234,7 +248,9 @@ async def init_db(ctx: Context, safe):
    schema = get_schema_sql(connection, safe)

    version = await Migrate.generate_version()
-    await Aerich.create(version=version, app=app)
+    await Aerich.create(
+        version=version, app=app, content=Migrate.get_models_content(config, app, location)
+    )
    with open(os.path.join(dirname, version), "w", encoding="utf-8") as f:
        content = {
            "upgrade": [schema],
@@ -245,4 +261,4 @@ async def init_db(ctx: Context, safe):

 def main():
    sys.path.insert(0, ".")
-    cli(_anyio_backend="asyncio")
+    cli()
--- a/aerich/ddl/init.py
+++ b/aerich/ddl/init.py
@@ -2,7 +2,7 @@ from typing import List, Type

 from tortoise import BaseDBAsyncClient, ForeignKeyFieldInstance, ManyToManyFieldInstance, Model
 from tortoise.backends.base.schema_generator import BaseSchemaGenerator
-from tortoise.fields import Field, JSONField, TextField, UUIDField
+from tortoise.fields import CASCADE, Field, JSONField, TextField, UUIDField


 class BaseDDL:
@@ -11,13 +11,16 @@ class BaseDDL:
    _DROP_TABLE_TEMPLATE = 'DROP TABLE IF EXISTS "{table_name}"'
    _ADD_COLUMN_TEMPLATE = 'ALTER TABLE "{table_name}" ADD {column}'
    _DROP_COLUMN_TEMPLATE = 'ALTER TABLE "{table_name}" DROP COLUMN "{column_name}"'
+    _RENAME_COLUMN_TEMPLATE = (
+        'ALTER TABLE "{table_name}" RENAME COLUMN "{old_column_name}" TO "{new_column_name}"'
+    )
    _ADD_INDEX_TEMPLATE = (
        'ALTER TABLE "{table_name}" ADD {unique} INDEX "{index_name}" ({column_names})'
    )
    _DROP_INDEX_TEMPLATE = 'ALTER TABLE "{table_name}" DROP INDEX "{index_name}"'
    _ADD_FK_TEMPLATE = 'ALTER TABLE "{table_name}" ADD CONSTRAINT "{fk_name}" FOREIGN KEY ("{db_column}") REFERENCES "{table}" ("{field}") ON DELETE {on_delete}'
    _DROP_FK_TEMPLATE = 'ALTER TABLE "{table_name}" DROP FOREIGN KEY "{fk_name}"'
-    _M2M_TABLE_TEMPLATE = 'CREATE TABLE "{table_name}" ("{backward_key}" {backward_type} NOT NULL REFERENCES "{backward_table}" ("{backward_field}") ON DELETE CASCADE,"{forward_key}" {forward_type} NOT NULL REFERENCES "{forward_table}" ("{forward_field}") ON DELETE CASCADE){extra}{comment};'
+    _M2M_TABLE_TEMPLATE = 'CREATE TABLE "{table_name}" ("{backward_key}" {backward_type} NOT NULL REFERENCES "{backward_table}" ("{backward_field}") ON DELETE CASCADE,"{forward_key}" {forward_type} NOT NULL REFERENCES "{forward_table}" ("{forward_field}") ON DELETE {on_delete}){extra}{comment};'
    _MODIFY_COLUMN_TEMPLATE = 'ALTER TABLE "{table_name}" MODIFY COLUMN {column}'

    def __init__(self, client: "BaseDBAsyncClient"):
@@ -41,6 +44,7 @@ class BaseDDL:
            backward_type=model._meta.pk.get_for_dialect(self.DIALECT, "SQL_TYPE"),
            forward_key=field.forward_key,
            forward_type=field.related_model._meta.pk.get_for_dialect(self.DIALECT, "SQL_TYPE"),
+            on_delete=CASCADE,
            extra=self.schema_generator._table_generate_extra(table=field.through),
            comment=self.schema_generator._table_comment_generator(
                table=field.through, comment=field.description
@@ -125,6 +129,13 @@ class BaseDDL:
            ),
        )

+    def rename_column(self, model: "Type[Model]", old_column_name: str, new_column_name: str):
+        return self._RENAME_COLUMN_TEMPLATE.format(
+            table_name=model._meta.db_table,
+            old_column_name=old_column_name,
+            new_column_name=new_column_name,
+        )
+
    def add_index(self, model: "Type[Model]", field_names: List[str], unique=False):
        return self._ADD_INDEX_TEMPLATE.format(
            unique="UNIQUE" if unique else "",
--- a/aerich/ddl/mysql/init.py
+++ b/aerich/ddl/mysql/init.py
@@ -9,6 +9,9 @@ class MysqlDDL(BaseDDL):
    _DROP_TABLE_TEMPLATE = "DROP TABLE IF EXISTS `{table_name}`"
    _ADD_COLUMN_TEMPLATE = "ALTER TABLE `{table_name}` ADD {column}"
    _DROP_COLUMN_TEMPLATE = "ALTER TABLE `{table_name}` DROP COLUMN `{column_name}`"
+    _RENAME_COLUMN_TEMPLATE = (
+        "ALTER TABLE `{table_name}` RENAME COLUMN `{old_column_name}` TO `{new_column_name}`"
+    )
    _ADD_INDEX_TEMPLATE = (
        "ALTER TABLE `{table_name}` ADD {unique} INDEX `{index_name}` ({column_names})"
    )
--- a/aerich/ddl/postgres/init.py
+++ b/aerich/ddl/postgres/init.py
@@ -1,4 +1,4 @@
-from typing import Type
+from typing import List, Type

 from tortoise import Model
 from tortoise.backends.asyncpg.schema_generator import AsyncpgSchemaGenerator
@@ -10,6 +10,12 @@ from aerich.ddl import BaseDDL
 class PostgresDDL(BaseDDL):
    schema_generator_cls = AsyncpgSchemaGenerator
    DIALECT = AsyncpgSchemaGenerator.DIALECT
+    _ADD_INDEX_TEMPLATE = 'CREATE INDEX "{index_name}" ON "{table_name}" ({column_names})'
+    _ADD_UNIQUE_TEMPLATE = (
+        'ALTER TABLE "{table_name}" ADD CONSTRAINT "{index_name}" UNIQUE ({column_names})'
+    )
+    _DROP_INDEX_TEMPLATE = 'DROP INDEX "{index_name}"'
+    _DROP_UNIQUE_TEMPLATE = 'ALTER TABLE "{table_name}" DROP CONSTRAINT "{index_name}"'
    _ALTER_DEFAULT_TEMPLATE = 'ALTER TABLE "{table_name}" ALTER COLUMN "{column}" {default}'
    _ALTER_NULL_TEMPLATE = 'ALTER TABLE "{table_name}" ALTER COLUMN "{column}" {set_drop} NOT NULL'
    _MODIFY_COLUMN_TEMPLATE = 'ALTER TABLE "{table_name}" ALTER COLUMN "{column}" TYPE {datatype}'
@@ -41,6 +47,25 @@ class PostgresDDL(BaseDDL):
            datatype=field_object.get_for_dialect(self.DIALECT, "SQL_TYPE"),
        )

+    def add_index(self, model: "Type[Model]", field_names: List[str], unique=False):
+        template = self._ADD_UNIQUE_TEMPLATE if unique else self._ADD_INDEX_TEMPLATE
+        return template.format(
+            index_name=self.schema_generator._generate_index_name(
+                "uid" if unique else "idx", model, field_names
+            ),
+            table_name=model._meta.db_table,
+            column_names=", ".join([self.schema_generator.quote(f) for f in field_names]),
+        )
+
+    def drop_index(self, model: "Type[Model]", field_names: List[str], unique=False):
+        template = self._DROP_UNIQUE_TEMPLATE if unique else self._DROP_INDEX_TEMPLATE
+        return template.format(
+            index_name=self.schema_generator._generate_index_name(
+                "uid" if unique else "idx", model, field_names
+            ),
+            table_name=model._meta.db_table,
+        )
+
    def set_comment(self, model: "Type[Model]", field_object: Field):
        db_table = model._meta.db_table
        return self._SET_COMMENT_TEMPLATE.format(
--- a/aerich/ddl/sqlite/init.py
+++ b/aerich/ddl/sqlite/init.py
@@ -1,8 +1,19 @@
+from typing import Type
+
+from tortoise import Model
 from tortoise.backends.sqlite.schema_generator import SqliteSchemaGenerator
+from tortoise.fields import Field

 from aerich.ddl import BaseDDL
+from aerich.exceptions import NotSupportError


 class SqliteDDL(BaseDDL):
    schema_generator_cls = SqliteSchemaGenerator
    DIALECT = SqliteSchemaGenerator.DIALECT
+
+    def drop_column(self, model: "Type[Model]", column_name: str):
+        raise NotSupportError("Drop column is unsupported in SQLite.")
+
+    def modify_column(self, model: "Type[Model]", field_object: Field):
+        raise NotSupportError("Modify column is unsupported in SQLite.")
--- a/aerich/enums.py
+++ b/aerich/enums.py
@@ -0,0 +1,7 @@
+from enum import Enum
+
+
+class Color(str, Enum):
+    green = "green"
+    red = "red"
+    yellow = "yellow"
--- a/aerich/exceptions.py
+++ b/aerich/exceptions.py
@@ -1,6 +1,4 @@
-class ConfigurationError(Exception):
+class NotSupportError(Exception):
    """
-    config error
+    raise when features not support
    """
-
-    pass
--- a/aerich/migrate.py
+++ b/aerich/migrate.py
@@ -1,11 +1,12 @@
 import json
 import os
 import re
-from copy import deepcopy
 from datetime import datetime
 from importlib import import_module
-from typing import Dict, List, Tuple, Type
+from io import StringIO
+from typing import Dict, List, Optional, Tuple, Type

+import click
 from tortoise import (
    BackwardFKRelation,
    BackwardOneToOneRelation,
@@ -14,6 +15,7 @@ from tortoise import (
    Model,
    Tortoise,
 )
+from tortoise.exceptions import OperationalError
 from tortoise.fields import Field

 from aerich.ddl import BaseDDL
@@ -29,6 +31,8 @@ class Migrate:
    _upgrade_m2m: List[str] = []
    _downgrade_m2m: List[str] = []
    _aerich = Aerich.__name__
+    _rename_old = []
+    _rename_new = []

    ddl: BaseDDL
    migrate_config: dict
@@ -39,29 +43,44 @@ class Migrate:
    dialect: str

    @classmethod
-    def get_old_model_file(cls):
-        return cls.old_models + ".py"
+    def get_old_model_file(cls, app: str, location: str):
+        return os.path.join(location, app, cls.old_models + ".py")

    @classmethod
    def get_all_version_files(cls) -> List[str]:
        return sorted(
            filter(lambda x: x.endswith("json"), os.listdir(cls.migrate_location)),
-            key=lambda x: x.split("_")[0],
+            key=lambda x: int(x.split("_")[0]),
        )

    @classmethod
-    async def get_last_version(cls) -> Aerich:
-        return await Aerich.filter(app=cls.app).first()
+    async def get_last_version(cls) -> Optional[Aerich]:
+        try:
+            return await Aerich.filter(app=cls.app).first()
+        except OperationalError:
+            pass
+
+    @classmethod
+    def remove_old_model_file(cls, app: str, location: str):
+        try:
+            os.unlink(cls.get_old_model_file(app, location))
+        except FileNotFoundError:
+            pass

    @classmethod
    async def init_with_old_models(cls, config: dict, app: str, location: str):
-        migrate_config = cls._get_migrate_config(config, app, location)
-
+        await Tortoise.init(config=config)
+        last_version = await cls.get_last_version()
        cls.app = app
-        cls.migrate_config = migrate_config
        cls.migrate_location = os.path.join(location, app)
+        if last_version:
+            content = last_version.content
+            with open(cls.get_old_model_file(app, location), "w") as f:
+                f.write(content)

-        await Tortoise.init(config=migrate_config)
+            migrate_config = cls._get_migrate_config(config, app, location)
+            cls.migrate_config = migrate_config
+            await Tortoise.init(config=migrate_config)

        connection = get_app_connection(config, app)
        cls.dialect = connection.schema_generator.DIALECT
@@ -88,7 +107,7 @@ class Migrate:

    @classmethod
    async def generate_version(cls, name=None):
-        now = datetime.now().strftime("%Y%M%D%H%M%S").replace("/", "")
+        now = datetime.now().strftime("%Y%m%d%H%M%S").replace("/", "")
        last_version_num = await cls._get_last_version_num()
        if last_version_num is None:
            return f"0_{now}_init.json"
@@ -100,6 +119,10 @@ class Migrate:
    @classmethod
    async def _generate_diff_sql(cls, name):
        version = await cls.generate_version(name)
+        # delete if same version exists
+        for version_file in cls.get_all_version_files():
+            if version_file.startswith(version.split("_")[0]):
+                os.unlink(os.path.join(cls.migrate_location, version_file))
        content = {
            "upgrade": cls.upgrade_operators,
            "downgrade": cls.downgrade_operators,
@@ -130,7 +153,7 @@ class Migrate:
        return await cls._generate_diff_sql(name)

    @classmethod
-    def _add_operator(cls, operator: str, upgrade=True, fk=False):
+    def _add_operator(cls, operator: str, upgrade=True, fk_m2m=False):
        """
        add operator,differentiate fk because fk is order limit
        :param operator:
@@ -139,36 +162,16 @@ class Migrate:
        :return:
        """
        if upgrade:
-            if fk:
+            if fk_m2m:
                cls._upgrade_fk_m2m_index_operators.append(operator)
            else:
                cls.upgrade_operators.append(operator)
        else:
-            if fk:
+            if fk_m2m:
                cls._downgrade_fk_m2m_index_operators.append(operator)
            else:
                cls.downgrade_operators.append(operator)

-    @classmethod
-    def cp_models(
-        cls, app: str, model_files: List[str], old_model_file,
-    ):
-        """
-        cp currents models to old_model_files
-        :param app:
-        :param model_files:
-        :param old_model_file:
-        :return:
-        """
-        pattern = rf"(\n)?('|\")({app})(.\w+)('|\")"
-        for i, model_file in enumerate(model_files):
-            with open(model_file, "r", encoding="utf-8") as f:
-                content = f.read()
-            ret = re.sub(pattern, rf"\2{cls.diff_app}\4\5", content)
-            mode = "w" if i == 0 else "a"
-            with open(old_model_file, mode, encoding="utf-8") as f:
-                f.write(ret)
-
    @classmethod
    def _get_migrate_config(cls, config: dict, app: str, location: str):
        """
@@ -178,17 +181,16 @@ class Migrate:
        :param location:
        :return:
        """
-        temp_config = deepcopy(config)
        path = os.path.join(location, app, cls.old_models)
        path = path.replace(os.sep, ".").lstrip(".")
-        temp_config["apps"][cls.diff_app] = {
+        config["apps"][cls.diff_app] = {
            "models": [path],
            "default_connection": config.get("apps").get(app).get("default_connection", "default"),
        }
-        return temp_config
+        return config

    @classmethod
-    def write_old_models(cls, config: dict, app: str, location: str):
+    def get_models_content(cls, config: dict, app: str, location: str):
        """
        write new models to old models
        :param config:
@@ -196,14 +198,18 @@ class Migrate:
        :param location:
        :return:
        """
-        cls.app = app
-
        old_model_files = []
        models = config.get("apps").get(app).get("models")
        for model in models:
            old_model_files.append(import_module(model).__file__)
-
-        cls.cp_models(app, old_model_files, os.path.join(location, app, cls.get_old_model_file()))
+        pattern = rf"(\n)?('|\")({app})(.\w+)('|\")"
+        str_io = StringIO()
+        for i, model_file in enumerate(old_model_files):
+            with open(model_file, "r", encoding="utf-8") as f:
+                content = f.read()
+            ret = re.sub(pattern, rf"\2{cls.diff_app}\4\5", content)
+            str_io.write(f"{ret}\n")
+        return str_io.getvalue()

    @classmethod
    def diff_models(
@@ -266,11 +272,35 @@ class Migrate:
            if cls._exclude_field(new_field, upgrade):
                continue
            if new_key not in old_keys:
-                cls._add_operator(
-                    cls._add_field(new_model, new_field),
-                    upgrade,
-                    isinstance(new_field, (ForeignKeyFieldInstance, ManyToManyFieldInstance)),
-                )
+                new_field_dict = new_field.describe(serializable=True)
+                new_field_dict.pop("name", None)
+                new_field_dict.pop("db_column", None)
+                for diff_key in old_keys - new_keys:
+                    old_field = old_fields_map.get(diff_key)
+                    old_field_dict = old_field.describe(serializable=True)
+                    old_field_dict.pop("name", None)
+                    old_field_dict.pop("db_column", None)
+                    if old_field_dict == new_field_dict:
+                        if upgrade:
+                            is_rename = click.prompt(
+                                f"Rename {diff_key} to {new_key}?",
+                                default=True,
+                                type=bool,
+                                show_choices=True,
+                            )
+                            cls._rename_new.append(new_key)
+                            cls._rename_old.append(diff_key)
+                        else:
+                            is_rename = diff_key in cls._rename_new
+                        if is_rename:
+                            cls._add_operator(
+                                cls._rename_field(new_model, old_field, new_field), upgrade,
+                            )
+                            break
+                else:
+                    cls._add_operator(
+                        cls._add_field(new_model, new_field), upgrade, cls._is_fk_m2m(new_field),
+                    )
            else:
                old_field = old_fields_map.get(new_key)
                new_field_dict = new_field.describe(serializable=True)
@@ -293,7 +323,12 @@ class Migrate:
                            cls._add_operator(
                                cls._set_comment(new_model, new_field), upgrade=upgrade
                            )
-                    cls._add_operator(cls._modify_field(new_model, new_field), upgrade=upgrade)
+                        if new_field.field_type != old_field.field_type:
+                            cls._add_operator(
+                                cls._modify_field(new_model, new_field), upgrade=upgrade
+                            )
+                    else:
+                        cls._add_operator(cls._modify_field(new_model, new_field), upgrade=upgrade)
                if (old_field.index and not new_field.index) or (
                    old_field.unique and not new_field.unique
                ):
@@ -312,13 +347,25 @@ class Migrate:
                        upgrade,
                        cls._is_fk_m2m(new_field),
                    )
+                if isinstance(new_field, ForeignKeyFieldInstance):
+                    if old_field.db_constraint and not new_field.db_constraint:
+                        cls._add_operator(
+                            cls._drop_fk(new_model, new_field), upgrade, True,
+                        )
+                    if new_field.db_constraint and not old_field.db_constraint:
+                        cls._add_operator(
+                            cls._add_fk(new_model, new_field), upgrade, True,
+                        )

        for old_key in old_keys:
            field = old_fields_map.get(old_key)
            if old_key not in new_keys and not cls._exclude_field(field, upgrade):
-                cls._add_operator(
-                    cls._remove_field(old_model, field), upgrade, cls._is_fk_m2m(field),
-                )
+                if (upgrade and old_key not in cls._rename_old) or (
+                    not upgrade and old_key not in cls._rename_new
+                ):
+                    cls._add_operator(
+                        cls._remove_field(old_model, field), upgrade, cls._is_fk_m2m(field),
+                    )

        for new_index in new_indexes:
            if new_index not in old_indexes:
@@ -402,6 +449,10 @@ class Migrate:
    def _modify_field(cls, model: Type[Model], field: Field):
        return cls.ddl.modify_column(model, field)

+    @classmethod
+    def _drop_fk(cls, model: Type[Model], field: ForeignKeyFieldInstance):
+        return cls.ddl.drop_fk(model, field)
+
    @classmethod
    def _remove_field(cls, model: Type[Model], field: Field):
        if isinstance(field, ForeignKeyFieldInstance):
@@ -410,6 +461,10 @@ class Migrate:
            return cls.ddl.drop_m2m(field)
        return cls.ddl.drop_column(model, field.model_field_name)

+    @classmethod
+    def _rename_field(cls, model: Type[Model], old_field: Field, new_field: Field):
+        return cls.ddl.rename_column(model, old_field.model_field_name, new_field.model_field_name)
+
    @classmethod
    def _add_fk(cls, model: Type[Model], field: ForeignKeyFieldInstance):
        """
--- a/aerich/models.py
+++ b/aerich/models.py
@@ -6,6 +6,7 @@ MAX_VERSION_LENGTH = 255
 class Aerich(Model):
    version = fields.CharField(max_length=MAX_VERSION_LENGTH)
    app = fields.CharField(max_length=20)
+    content = fields.TextField()

    class Meta:
        ordering = ["-id"]
--- a/aerich/utils.py
+++ b/aerich/utils.py
@@ -1,6 +1,6 @@
 import importlib

-from asyncclick import BadOptionUsage, Context
+from click import BadOptionUsage, Context
 from tortoise import BaseDBAsyncClient, Tortoise


--- a/conftest.py
+++ b/conftest.py
@@ -31,24 +31,29 @@ def reset_migrate():
    Migrate._downgrade_m2m = []


-@pytest.fixture(scope="session")
-def loop():
-    loop = asyncio.get_event_loop()
-    return loop
+@pytest.yield_fixture(scope="session")
+def event_loop():
+    policy = asyncio.get_event_loop_policy()
+    res = policy.new_event_loop()
+    asyncio.set_event_loop(res)
+    res._close = res.close
+    res.close = lambda: None
+
+    yield res
+
+    res._close()


@pytest.fixture(scope="session", autouse=True)
-def initialize_tests(loop, request):
+async def initialize_tests(event_loop, request):
    tortoise_orm["connections"]["diff_models"] = "sqlite://:memory:"
    tortoise_orm["apps"]["diff_models"] = {
        "models": ["tests.diff_models"],
        "default_connection": "diff_models",
    }

-    loop.run_until_complete(Tortoise.init(config=tortoise_orm, _create_db=True))
-    loop.run_until_complete(
-        generate_schema_for_client(Tortoise.get_connection("default"), safe=True)
-    )
+    await Tortoise.init(config=tortoise_orm, _create_db=True)
+    await generate_schema_for_client(Tortoise.get_connection("default"), safe=True)

    client = Tortoise.get_connection("default")
    if client.schema_generator is MySQLSchemaGenerator:
@@ -58,4 +63,4 @@ def initialize_tests(loop, request):
    elif client.schema_generator is AsyncpgSchemaGenerator:
        Migrate.ddl = PostgresDDL(client)

-    request.addfinalizer(lambda: loop.run_until_complete(Tortoise._drop_databases()))
+    request.addfinalizer(lambda: event_loop.run_until_complete(Tortoise._drop_databases()))
--- a/poetry.lock
+++ b/poetry.lock
@@ -23,25 +23,6 @@ version = "0.15.0"
 [package.dependencies]
 typing_extensions = "*"

-[[package]]
-category = "main"
-description = "High level compatibility layer for multiple asynchronous event loop implementations"
-name = "anyio"
-optional = false
-python-versions = ">=3.5.3"
-version = "1.4.0"
-
-[package.dependencies]
-async-generator = "*"
-idna = ">=2.8"
-sniffio = ">=1.1"
-
-[package.extras]
-curio = ["curio (>=0.9)"]
-doc = ["sphinx-rtd-theme", "sphinx-autodoc-typehints (>=1.2.0)"]
-test = ["coverage (>=4.5)", "hypothesis (>=4.0)", "pytest (>=3.7.2)", "uvloop"]
-trio = ["trio (>=0.12)"]
-
 [[package]]
 category = "dev"
 description = "apipkg: namespace control and lazy-import mechanism"
@@ -58,39 +39,16 @@ optional = false
 python-versions = "*"
 version = "1.4.4"

-[[package]]
-category = "main"
-description = "Async generators and context managers for Python 3.5+"
-name = "async-generator"
-optional = false
-python-versions = ">=3.5"
-version = "1.10"
-
-[[package]]
-category = "main"
-description = "A simple anyio-compatible fork of Click, for powerful command line utilities."
-name = "asyncclick"
-optional = false
-python-versions = ">=3.6"
-version = "7.0.9"
-
-[package.dependencies]
-anyio = "*"
-
-[package.extras]
-dev = ["coverage", "pytest-runner", "pytest-trio", "pytest (>=3)", "sphinx", "tox"]
-docs = ["sphinx"]
-
 [[package]]
 category = "main"
 description = "An asyncio PostgreSQL driver"
 name = "asyncpg"
 optional = true
 python-versions = ">=3.5.0"
-version = "0.20.1"
+version = "0.21.0"

 [package.extras]
-dev = ["Cython (0.29.14)", "pytest (>=3.6.0)", "Sphinx (>=1.7.3,<1.8.0)", "sphinxcontrib-asyncio (>=0.2.0,<0.3.0)", "sphinx-rtd-theme (>=0.2.4,<0.3.0)", "pycodestyle (>=2.5.0,<2.6.0)", "flake8 (>=3.7.9,<3.8.0)", "uvloop (>=0.14.0,<0.15.0)"]
+dev = ["Cython (0.29.20)", "pytest (>=3.6.0)", "Sphinx (>=1.7.3,<1.8.0)", "sphinxcontrib-asyncio (>=0.2.0,<0.3.0)", "sphinx-rtd-theme (>=0.2.4,<0.3.0)", "pycodestyle (>=2.5.0,<2.6.0)", "flake8 (>=3.7.9,<3.8.0)", "uvloop (>=0.14.0,<0.15.0)"]
 docs = ["Sphinx (>=1.7.3,<1.8.0)", "sphinxcontrib-asyncio (>=0.2.0,<0.3.0)", "sphinx-rtd-theme (>=0.2.4,<0.3.0)"]
 test = ["pycodestyle (>=2.5.0,<2.6.0)", "flake8 (>=3.7.9,<3.8.0)", "uvloop (>=0.14.0,<0.15.0)"]

@@ -109,13 +67,13 @@ description = "Classes Without Boilerplate"
 name = "attrs"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
-version = "19.3.0"
+version = "20.2.0"

 [package.extras]
-azure-pipelines = ["coverage", "hypothesis", "pympler", "pytest (>=4.3.0)", "six", "zope.interface", "pytest-azurepipelines"]
-dev = ["coverage", "hypothesis", "pympler", "pytest (>=4.3.0)", "six", "zope.interface", "sphinx", "pre-commit"]
-docs = ["sphinx", "zope.interface"]
-tests = ["coverage", "hypothesis", "pympler", "pytest (>=4.3.0)", "six", "zope.interface"]
+dev = ["coverage (>=5.0.2)", "hypothesis", "pympler", "pytest (>=4.3.0)", "six", "zope.interface", "sphinx", "sphinx-rtd-theme", "pre-commit"]
+docs = ["sphinx", "sphinx-rtd-theme", "zope.interface"]
+tests = ["coverage (>=5.0.2)", "hypothesis", "pympler", "pytest (>=4.3.0)", "six", "zope.interface"]
+tests_no_zope = ["coverage (>=5.0.2)", "hypothesis", "pympler", "pytest (>=4.3.0)", "six"]

 [[package]]
 category = "dev"
@@ -158,13 +116,13 @@ description = "Foreign Function Interface for Python calling C code."
 name = "cffi"
 optional = true
 python-versions = "*"
-version = "1.14.0"
+version = "1.14.3"

 [package.dependencies]
 pycparser = "*"

 [[package]]
-category = "dev"
+category = "main"
 description = "Composable command line interface toolkit"
 name = "click"
 optional = false
@@ -186,17 +144,17 @@ description = "cryptography is a package which provides cryptographic recipes an
 name = "cryptography"
 optional = true
 python-versions = ">=2.7,!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,!=3.4.*"
-version = "2.9.2"
+version = "3.1.1"

 [package.dependencies]
 cffi = ">=1.8,<1.11.3 || >1.11.3"
 six = ">=1.4.1"

 [package.extras]
-docs = ["sphinx (>=1.6.5,<1.8.0 || >1.8.0)", "sphinx-rtd-theme"]
+docs = ["sphinx (>=1.6.5,<1.8.0 || >1.8.0,<3.1.0 || >3.1.0,<3.1.1 || >3.1.1)", "sphinx-rtd-theme"]
 docstest = ["doc8", "pyenchant (>=1.6.11)", "twine (>=1.12.0)", "sphinxcontrib-spelling (>=4.0.1)"]
-idna = ["idna (>=2.1)"]
-pep8test = ["flake8", "flake8-import-order", "pep8-naming"]
+pep8test = ["black", "flake8", "flake8-import-order", "pep8-naming"]
+ssh = ["bcrypt (>=3.1.5)"]
 test = ["pytest (>=3.6.0,<3.9.0 || >3.9.0,<3.9.1 || >3.9.1,<3.9.2 || >3.9.2)", "pretend", "iso8601", "pytz", "hypothesis (>=1.11.4,<3.79.2 || >3.79.2)"]

 [[package]]
@@ -219,7 +177,7 @@ description = "the modular source code checker: pep8 pyflakes and co"
 name = "flake8"
 optional = false
 python-versions = "!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,>=2.7"
-version = "3.8.3"
+version = "3.8.4"

 [package.dependencies]
 mccabe = ">=0.6.0,<0.7.0"
@@ -247,19 +205,11 @@ description = "Python Git Library"
 name = "gitpython"
 optional = false
 python-versions = ">=3.4"
-version = "3.1.7"
+version = "3.1.9"

 [package.dependencies]
 gitdb = ">=4.0.1,<5"

-[[package]]
-category = "main"
-description = "Internationalized Domain Names in Applications (IDNA)"
-name = "idna"
-optional = false
-python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
-version = "2.10"
-
 [[package]]
 category = "dev"
 description = "Read metadata from Python packages"
@@ -267,7 +217,7 @@ marker = "python_version < \"3.8\""
 name = "importlib-metadata"
 optional = false
 python-versions = "!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,!=3.4.*,>=2.7"
-version = "1.7.0"
+version = "2.0.0"

 [package.dependencies]
 zipp = ">=0.5"
@@ -276,13 +226,21 @@ zipp = ">=0.5"
 docs = ["sphinx", "rst.linker"]
 testing = ["packaging", "pep517", "importlib-resources (>=1.3)"]

+[[package]]
+category = "dev"
+description = "iniconfig: brain-dead simple config-ini parsing"
+name = "iniconfig"
+optional = false
+python-versions = "*"
+version = "1.0.1"
+
 [[package]]
 category = "main"
 description = "Simple module to parse ISO 8601 dates"
 name = "iso8601"
 optional = false
 python-versions = "*"
-version = "0.1.12"
+version = "0.1.13"

 [[package]]
 category = "dev"
@@ -290,10 +248,11 @@ description = "A Python utility / library to sort Python imports."
 name = "isort"
 optional = false
 python-versions = ">=3.6,<4.0"
-version = "5.1.3"
+version = "5.6.1"

 [package.extras]
-pipfile_deprecated_finder = ["pipreqs", "requirementslib", "tomlkit (>=0.5.3)"]
+colors = ["colorama (>=0.4.3,<0.5.0)"]
+pipfile_deprecated_finder = ["pipreqs", "requirementslib"]
 requirements_deprecated_finder = ["pipreqs", "pip-api"]

 [[package]]
@@ -304,14 +263,6 @@ optional = false
 python-versions = "*"
 version = "0.6.1"

-[[package]]
-category = "dev"
-description = "More routines for operating on iterables, beyond itertools"
-name = "more-itertools"
-optional = false
-python-versions = ">=3.5"
-version = "8.4.0"
-
 [[package]]
 category = "dev"
 description = "Core utilities for Python packages"
@@ -337,8 +288,8 @@ category = "dev"
 description = "Python Build Reasonableness"
 name = "pbr"
 optional = false
-python-versions = "*"
-version = "5.4.5"
+python-versions = ">=2.6"
+version = "5.5.0"

 [[package]]
 category = "dev"
@@ -426,7 +377,7 @@ description = "A SQL query builder API for Python"
 name = "pypika"
 optional = false
 python-versions = "*"
-version = "0.37.16"
+version = "0.42.1"

 [[package]]
 category = "dev"
@@ -434,24 +385,24 @@ description = "pytest: simple powerful testing with Python"
 name = "pytest"
 optional = false
 python-versions = ">=3.5"
-version = "5.4.3"
+version = "6.1.1"

 [package.dependencies]
 atomicwrites = ">=1.0"
 attrs = ">=17.4.0"
 colorama = "*"
-more-itertools = ">=4.0.0"
+iniconfig = "*"
 packaging = "*"
 pluggy = ">=0.12,<1.0"
-py = ">=1.5.0"
-wcwidth = "*"
+py = ">=1.8.2"
+toml = "*"

 [package.dependencies.importlib-metadata]
 python = "<3.8"
 version = ">=0.12"

 [package.extras]
-checkqa-mypy = ["mypy (v0.761)"]
+checkqa_mypy = ["mypy (0.780)"]
 testing = ["argcomplete", "hypothesis (>=3.56)", "mock", "nose", "requests", "xmlschema"]

 [[package]]
@@ -474,26 +425,41 @@ description = "run tests in isolated forked subprocesses"
 name = "pytest-forked"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
-version = "1.2.0"
+version = "1.3.0"

 [package.dependencies]
-pytest = ">=3.1.0"
+py = "*"
+pytest = ">=3.10"
+
+[[package]]
+category = "dev"
+description = "Thin-wrapper around the mock package for easier use with pytest"
+name = "pytest-mock"
+optional = false
+python-versions = ">=3.5"
+version = "3.3.1"
+
+[package.dependencies]
+pytest = ">=5.0"
+
+[package.extras]
+dev = ["pre-commit", "tox", "pytest-asyncio"]

 [[package]]
 category = "dev"
 description = "pytest xdist plugin for distributed testing and loop-on-failing modes"
 name = "pytest-xdist"
 optional = false
-python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
-version = "1.33.0"
+python-versions = ">=3.5"
+version = "2.1.0"

 [package.dependencies]
 execnet = ">=1.1"
-pytest = ">=4.4.0"
+pytest = ">=6.0.0"
 pytest-forked = "*"
-six = "*"

 [package.extras]
+psutil = ["psutil (>=3.0)"]
 testing = ["filelock"]

 [[package]]
@@ -510,7 +476,7 @@ description = "Alternative regular expression module, to replace re."
 name = "regex"
 optional = false
 python-versions = "*"
-version = "2020.7.14"
+version = "2020.9.27"

 [[package]]
 category = "main"
@@ -528,21 +494,13 @@ optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
 version = "3.0.4"

-[[package]]
-category = "main"
-description = "Sniff out which async library your code is running under"
-name = "sniffio"
-optional = false
-python-versions = ">=3.5"
-version = "1.1.0"
-
 [[package]]
 category = "dev"
 description = "Manage dynamic plugins for Python applications"
 name = "stevedore"
 optional = false
 python-versions = ">=3.6"
-version = "3.2.0"
+version = "3.2.2"

 [package.dependencies]
 pbr = ">=2.0.0,<2.1.0 || >2.1.0"
@@ -565,12 +523,12 @@ description = "Easy async ORM for python, built with relations in mind"
 name = "tortoise-orm"
 optional = false
 python-versions = "*"
-version = "0.16.13"
+version = "0.16.16"

 [package.dependencies]
 aiosqlite = ">=0.11.0"
 iso8601 = ">=0.1.12"
-pypika = ">=0.36.5"
+pypika = ">=0.39.0"
 typing-extensions = ">=3.7"

 [package.extras]
@@ -590,15 +548,7 @@ description = "Backported and Experimental Type Hints for Python 3.5+"
 name = "typing-extensions"
 optional = false
 python-versions = "*"
-version = "3.7.4.2"
-
-[[package]]
-category = "dev"
-description = "Measures the displayed width of unicode strings in a terminal"
-name = "wcwidth"
-optional = false
-python-versions = "*"
-version = "0.2.5"
+version = "3.7.4.3"

 [[package]]
 category = "dev"
@@ -607,17 +557,17 @@ marker = "python_version < \"3.8\""
 name = "zipp"
 optional = false
 python-versions = ">=3.6"
-version = "3.1.0"
+version = "3.3.0"

 [package.extras]
 docs = ["sphinx", "jaraco.packaging (>=3.2)", "rst.linker (>=1.9)"]
-testing = ["jaraco.itertools", "func-timeout"]
+testing = ["pytest (>=3.5,<3.7.3 || >3.7.3)", "pytest-checkdocs (>=1.2.3)", "pytest-flake8", "pytest-cov", "jaraco.test (>=3.2.0)", "jaraco.itertools", "func-timeout", "pytest-black (>=0.3.7)", "pytest-mypy"]

 [extras]
 dbdrivers = ["aiomysql", "asyncpg"]

 [metadata]
-content-hash = "2e02de89517b7461909007ef09e1697e78a4202ffe086444e6027a0a91db58b7"
+content-hash = "43fe9c0036f4d55d38f82c263887d8a7d9a35a597e02036b70a631955ff73149"
 python-versions = "^3.7"

 [metadata.files]
@@ -629,10 +579,6 @@ aiosqlite = [
    {file = "aiosqlite-0.15.0-py3-none-any.whl", hash = "sha256:19b984b6702aed9f1c85c023f37296954547fc4030dae8e9d027b2a930bed78b"},
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 ]
-anyio = [
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-    {file = "anyio-1.4.0.tar.gz", hash = "sha256:95f60964fc4583f3f226f8dc275dfb02aefe7b39b85a999c6d14f4ec5323c1d8"},
-]
 apipkg = [
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    {file = "apipkg-1.5.tar.gz", hash = "sha256:37228cda29411948b422fae072f57e31d3396d2ee1c9783775980ee9c9990af6"},
@@ -641,43 +587,40 @@ appdirs = [
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 ]
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-]
-asyncclick = [
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-]
 asyncpg = [
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 atomicwrites = [
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 bandit = [
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@@ -688,34 +631,42 @@ black = [
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+    {file = "regex-2020.9.27-cp38-cp38-manylinux2010_x86_64.whl", hash = "sha256:8d69cef61fa50c8133382e61fd97439de1ae623fe943578e477e76a9d9471637"},
+    {file = "regex-2020.9.27-cp38-cp38-win32.whl", hash = "sha256:f2388013e68e750eaa16ccbea62d4130180c26abb1d8e5d584b9baf69672b30f"},
+    {file = "regex-2020.9.27-cp38-cp38-win_amd64.whl", hash = "sha256:4318d56bccfe7d43e5addb272406ade7a2274da4b70eb15922a071c58ab0108c"},
+    {file = "regex-2020.9.27-cp39-cp39-manylinux1_i686.whl", hash = "sha256:84cada8effefe9a9f53f9b0d2ba9b7b6f5edf8d2155f9fdbe34616e06ececf81"},
+    {file = "regex-2020.9.27-cp39-cp39-manylinux1_x86_64.whl", hash = "sha256:816064fc915796ea1f26966163f6845de5af78923dfcecf6551e095f00983650"},
+    {file = "regex-2020.9.27-cp39-cp39-manylinux2010_i686.whl", hash = "sha256:5d892a4f1c999834eaa3c32bc9e8b976c5825116cde553928c4c8e7e48ebda67"},
+    {file = "regex-2020.9.27-cp39-cp39-manylinux2010_x86_64.whl", hash = "sha256:c9443124c67b1515e4fe0bb0aa18df640965e1030f468a2a5dc2589b26d130ad"},
+    {file = "regex-2020.9.27-cp39-cp39-win32.whl", hash = "sha256:49f23ebd5ac073765ecbcf046edc10d63dcab2f4ae2bce160982cb30df0c0302"},
+    {file = "regex-2020.9.27-cp39-cp39-win_amd64.whl", hash = "sha256:3d20024a70b97b4f9546696cbf2fd30bae5f42229fbddf8661261b1eaff0deb7"},
+    {file = "regex-2020.9.27.tar.gz", hash = "sha256:a6f32aea4260dfe0e55dc9733ea162ea38f0ea86aa7d0f77b15beac5bf7b369d"},
 ]
 six = [
    {file = "six-1.15.0-py2.py3-none-any.whl", hash = "sha256:8b74bedcbbbaca38ff6d7491d76f2b06b3592611af620f8426e82dddb04a5ced"},
@@ -908,20 +869,16 @@ smmap = [
    {file = "smmap-3.0.4-py2.py3-none-any.whl", hash = "sha256:54c44c197c819d5ef1991799a7e30b662d1e520f2ac75c9efbeb54a742214cf4"},
    {file = "smmap-3.0.4.tar.gz", hash = "sha256:9c98bbd1f9786d22f14b3d4126894d56befb835ec90cef151af566c7e19b5d24"},
 ]
-sniffio = [
-    {file = "sniffio-1.1.0-py3-none-any.whl", hash = "sha256:20ed6d5b46f8ae136d00b9dcb807615d83ed82ceea6b2058cecb696765246da5"},
-    {file = "sniffio-1.1.0.tar.gz", hash = "sha256:8e3810100f69fe0edd463d02ad407112542a11ffdc29f67db2bf3771afb87a21"},
-]
 stevedore = [
-    {file = "stevedore-3.2.0-py3-none-any.whl", hash = "sha256:c8f4f0ebbc394e52ddf49de8bcc3cf8ad2b4425ebac494106bbc5e3661ac7633"},
-    {file = "stevedore-3.2.0.tar.gz", hash = "sha256:38791aa5bed922b0a844513c5f9ed37774b68edc609e5ab8ab8d8fe0ce4315e5"},
+    {file = "stevedore-3.2.2-py3-none-any.whl", hash = "sha256:5e1ab03eaae06ef6ce23859402de785f08d97780ed774948ef16c4652c41bc62"},
+    {file = "stevedore-3.2.2.tar.gz", hash = "sha256:f845868b3a3a77a2489d226568abe7328b5c2d4f6a011cc759dfa99144a521f0"},
 ]
 toml = [
    {file = "toml-0.10.1-py2.py3-none-any.whl", hash = "sha256:bda89d5935c2eac546d648028b9901107a595863cb36bae0c73ac804a9b4ce88"},
    {file = "toml-0.10.1.tar.gz", hash = "sha256:926b612be1e5ce0634a2ca03470f95169cf16f939018233a670519cb4ac58b0f"},
 ]
 tortoise-orm = [
-    {file = "tortoise-orm-0.16.13.tar.gz", hash = "sha256:5f6fa4430a570172cb49517a97d45338dbfb1a690ed707030467efd154e67855"},
+    {file = "tortoise-orm-0.16.16.tar.gz", hash = "sha256:dc0c7909324a6c224076936adb3b1b154a8d2b13ff51e4232f0bdc3d65841185"},
 ]
 typed-ast = [
    {file = "typed_ast-1.4.1-cp35-cp35m-manylinux1_i686.whl", hash = "sha256:73d785a950fc82dd2a25897d525d003f6378d1cb23ab305578394694202a58c3"},
@@ -947,15 +904,11 @@ typed-ast = [
    {file = "typed_ast-1.4.1.tar.gz", hash = "sha256:8c8aaad94455178e3187ab22c8b01a3837f8ee50e09cf31f1ba129eb293ec30b"},
 ]
 typing-extensions = [
-    {file = "typing_extensions-3.7.4.2-py2-none-any.whl", hash = "sha256:f8d2bd89d25bc39dabe7d23df520442fa1d8969b82544370e03d88b5a591c392"},
-    {file = "typing_extensions-3.7.4.2-py3-none-any.whl", hash = "sha256:6e95524d8a547a91e08f404ae485bbb71962de46967e1b71a0cb89af24e761c5"},
-    {file = "typing_extensions-3.7.4.2.tar.gz", hash = "sha256:79ee589a3caca649a9bfd2a8de4709837400dfa00b6cc81962a1e6a1815969ae"},
-]
-wcwidth = [
-    {file = "wcwidth-0.2.5-py2.py3-none-any.whl", hash = "sha256:beb4802a9cebb9144e99086eff703a642a13d6a0052920003a230f3294bbe784"},
-    {file = "wcwidth-0.2.5.tar.gz", hash = "sha256:c4d647b99872929fdb7bdcaa4fbe7f01413ed3d98077df798530e5b04f116c83"},
+    {file = "typing_extensions-3.7.4.3-py2-none-any.whl", hash = "sha256:dafc7639cde7f1b6e1acc0f457842a83e722ccca8eef5270af2d74792619a89f"},
+    {file = "typing_extensions-3.7.4.3-py3-none-any.whl", hash = "sha256:7cb407020f00f7bfc3cb3e7881628838e69d8f3fcab2f64742a5e76b2f841918"},
+    {file = "typing_extensions-3.7.4.3.tar.gz", hash = "sha256:99d4073b617d30288f569d3f13d2bd7548c3a7e4c8de87db09a9d29bb3a4a60c"},
 ]
 zipp = [
-    {file = "zipp-3.1.0-py3-none-any.whl", hash = "sha256:aa36550ff0c0b7ef7fa639055d797116ee891440eac1a56f378e2d3179e0320b"},
-    {file = "zipp-3.1.0.tar.gz", hash = "sha256:c599e4d75c98f6798c509911d08a22e6c021d074469042177c8c86fb92eefd96"},
+    {file = "zipp-3.3.0-py3-none-any.whl", hash = "sha256:eed8ec0b8d1416b2ca33516a37a08892442f3954dee131e92cfd92d8fe3e7066"},
+    {file = "zipp-3.3.0.tar.gz", hash = "sha256:64ad89efee774d1897a58607895d80789c59778ea02185dd846ac38394a8642b"},
 ]
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "aerich"
-version = "0.2.2"
+version = "0.3.2"
 description = "A database migrations tool for Tortoise ORM."
 authors = ["long2ice <long2ice@gmail.com>"]
 license = "Apache-2.0"
@@ -12,12 +12,12 @@ keywords = ["migrate", "Tortoise-ORM", "mysql"]
 packages = [
    { include = "aerich" }
 ]
-include = ["CHANGELOG.rst", "LICENSE", "README.md"]
+include = ["CHANGELOG.md", "LICENSE", "README.md"]

 [tool.poetry.dependencies]
 python = "^3.7"
 tortoise-orm = "*"
-asyncclick = "*"
+click = "*"
 pydantic = "*"
 aiomysql = {version = "*", optional = true}
 asyncpg = {version = "*", optional = true}
@@ -30,6 +30,7 @@ pytest = "*"
 pytest-xdist = "*"
 pytest-asyncio = "*"
 bandit = "*"
+pytest-mock = "*"

 [tool.poetry.extras]
 dbdrivers = ["aiomysql", "asyncpg"]
@@ -39,4 +40,4 @@ requires = ["poetry>=0.12"]
 build-backend = "poetry.masonry.api"

 [tool.poetry.scripts]
-aerich = "aerich.cli:main"
+aerich = "aerich.cli:main"
--- a/tests/diff_models.py
+++ b/tests/diff_models.py
@@ -22,15 +22,21 @@ class Status(IntEnum):


 class User(Model):
-    username = fields.CharField(max_length=20,)
+    username = fields.CharField(max_length=20)
    password = fields.CharField(max_length=200)
-    last_login = fields.DatetimeField(description="Last Login", default=datetime.datetime.now)
+    last_login_at = fields.DatetimeField(description="Last Login", default=datetime.datetime.now)
    is_active = fields.BooleanField(default=True, description="Is Active")
    is_superuser = fields.BooleanField(default=False, description="Is SuperUser")
    avatar = fields.CharField(max_length=200, default="")
    intro = fields.TextField(default="")


+class Email(Model):
+    email = fields.CharField(max_length=200)
+    is_primary = fields.BooleanField(default=False)
+    user = fields.ForeignKeyField("diff_models.User", db_constraint=True)
+
+
 class Category(Model):
    slug = fields.CharField(max_length=200)
    user = fields.ForeignKeyField("diff_models.User", description="User")
--- a/tests/models.py
+++ b/tests/models.py
@@ -31,6 +31,12 @@ class User(Model):
    intro = fields.TextField(default="")


+class Email(Model):
+    email = fields.CharField(max_length=200)
+    is_primary = fields.BooleanField(default=False)
+    user = fields.ForeignKeyField("models.User", db_constraint=False)
+
+
 class Category(Model):
    slug = fields.CharField(max_length=200)
    name = fields.CharField(max_length=200)
--- a/tests/test_ddl.py
+++ b/tests/test_ddl.py
@@ -1,6 +1,9 @@
+import pytest
+
 from aerich.ddl.mysql import MysqlDDL
 from aerich.ddl.postgres import PostgresDDL
 from aerich.ddl.sqlite import SqliteDDL
+from aerich.exceptions import NotSupportError
 from aerich.migrate import Migrate
 from tests.models import Category, User

@@ -63,27 +66,26 @@ def test_add_column():


 def test_modify_column():
-    ret = Migrate.ddl.modify_column(Category, Category._meta.fields_map.get("name"))
-    if isinstance(Migrate.ddl, MysqlDDL):
-        assert ret == "ALTER TABLE `category` MODIFY COLUMN `name` VARCHAR(200) NOT NULL"
-    elif isinstance(Migrate.ddl, PostgresDDL):
-        assert ret == 'ALTER TABLE "category" ALTER COLUMN "name" TYPE VARCHAR(200)'
-    else:
-        assert ret == 'ALTER TABLE "category" MODIFY COLUMN "name" VARCHAR(200) NOT NULL'
+    if isinstance(Migrate.ddl, SqliteDDL):
+        with pytest.raises(NotSupportError):
+            ret0 = Migrate.ddl.modify_column(Category, Category._meta.fields_map.get("name"))
+            ret1 = Migrate.ddl.modify_column(User, User._meta.fields_map.get("is_active"))
+
+    else:
+        ret0 = Migrate.ddl.modify_column(Category, Category._meta.fields_map.get("name"))
+        ret1 = Migrate.ddl.modify_column(User, User._meta.fields_map.get("is_active"))
+    if isinstance(Migrate.ddl, MysqlDDL):
+        assert ret0 == "ALTER TABLE `category` MODIFY COLUMN `name` VARCHAR(200) NOT NULL"
+    elif isinstance(Migrate.ddl, PostgresDDL):
+        assert ret0 == 'ALTER TABLE "category" ALTER COLUMN "name" TYPE VARCHAR(200)'

-    ret = Migrate.ddl.modify_column(User, User._meta.fields_map.get("is_active"))
    if isinstance(Migrate.ddl, MysqlDDL):
        assert (
-            ret
+            ret1
            == "ALTER TABLE `user` MODIFY COLUMN `is_active` BOOL NOT NULL  COMMENT 'Is Active' DEFAULT 1"
        )
    elif isinstance(Migrate.ddl, PostgresDDL):
-        assert ret == 'ALTER TABLE "user" ALTER COLUMN "is_active" TYPE BOOL'
-    else:
-        assert (
-            ret
-            == 'ALTER TABLE "user" MODIFY COLUMN "is_active" INT NOT NULL  DEFAULT 1 /* Is Active */'
-        )
+        assert ret1 == 'ALTER TABLE "user" ALTER COLUMN "is_active" TYPE BOOL'


 def test_alter_column_default():
@@ -131,10 +133,14 @@ def test_set_comment():


 def test_drop_column():
-    ret = Migrate.ddl.drop_column(Category, "name")
+    if isinstance(Migrate.ddl, SqliteDDL):
+        with pytest.raises(NotSupportError):
+            ret = Migrate.ddl.drop_column(Category, "name")
+    else:
+        ret = Migrate.ddl.drop_column(Category, "name")
    if isinstance(Migrate.ddl, MysqlDDL):
        assert ret == "ALTER TABLE `category` DROP COLUMN `name`"
-    else:
+    elif isinstance(Migrate.ddl, PostgresDDL):
        assert ret == 'ALTER TABLE "category" DROP COLUMN "name"'


@@ -146,6 +152,12 @@ def test_add_index():
        assert (
            index_u == "ALTER TABLE `category` ADD UNIQUE INDEX `uid_category_name_8b0cb9` (`name`)"
        )
+    elif isinstance(Migrate.ddl, PostgresDDL):
+        assert index == 'CREATE INDEX "idx_category_name_8b0cb9" ON "category" ("name")'
+        assert (
+            index_u
+            == 'ALTER TABLE "category" ADD CONSTRAINT "uid_category_name_8b0cb9" UNIQUE ("name")'
+        )
    else:
        assert index == 'ALTER TABLE "category" ADD  INDEX "idx_category_name_8b0cb9" ("name")'
        assert (
@@ -155,10 +167,16 @@ def test_add_index():

 def test_drop_index():
    ret = Migrate.ddl.drop_index(Category, ["name"])
+    ret_u = Migrate.ddl.drop_index(Category, ["name"], True)
    if isinstance(Migrate.ddl, MysqlDDL):
        assert ret == "ALTER TABLE `category` DROP INDEX `idx_category_name_8b0cb9`"
+        assert ret_u == "ALTER TABLE `category` DROP INDEX `uid_category_name_8b0cb9`"
+    elif isinstance(Migrate.ddl, PostgresDDL):
+        assert ret == 'DROP INDEX "idx_category_name_8b0cb9"'
+        assert ret_u == 'ALTER TABLE "category" DROP CONSTRAINT "uid_category_name_8b0cb9"'
    else:
        assert ret == 'ALTER TABLE "category" DROP INDEX "idx_category_name_8b0cb9"'
+        assert ret_u == 'ALTER TABLE "category" DROP INDEX "uid_category_name_8b0cb9"'


 def test_add_fk():
--- a/tests/test_migrate.py
+++ b/tests/test_migrate.py
@@ -1,30 +1,79 @@
+import pytest
+from pytest_mock import MockerFixture
 from tortoise import Tortoise

 from aerich.ddl.mysql import MysqlDDL
+from aerich.ddl.postgres import PostgresDDL
+from aerich.ddl.sqlite import SqliteDDL
+from aerich.exceptions import NotSupportError
 from aerich.migrate import Migrate


-def test_migrate():
+def test_migrate(mocker: MockerFixture):
+    mocker.patch("click.prompt", return_value=True)
    apps = Tortoise.apps
    models = apps.get("models")
    diff_models = apps.get("diff_models")
    Migrate.diff_models(diff_models, models)
-    Migrate.diff_models(models, diff_models, False)
+    if isinstance(Migrate.ddl, SqliteDDL):
+        with pytest.raises(NotSupportError):
+            Migrate.diff_models(models, diff_models, False)
+    else:
+        Migrate.diff_models(models, diff_models, False)
+    Migrate._merge_operators()
    if isinstance(Migrate.ddl, MysqlDDL):
        assert Migrate.upgrade_operators == [
+            "ALTER TABLE `email` DROP FOREIGN KEY `fk_email_user_5b58673d`",
            "ALTER TABLE `category` ADD `name` VARCHAR(200) NOT NULL",
            "ALTER TABLE `user` ADD UNIQUE INDEX `uid_user_usernam_9987ab` (`username`)",
+            "ALTER TABLE `user` RENAME COLUMN `last_login_at` TO `last_login`",
        ]
        assert Migrate.downgrade_operators == [
            "ALTER TABLE `category` DROP COLUMN `name`",
            "ALTER TABLE `user` DROP INDEX `uid_user_usernam_9987ab`",
+            "ALTER TABLE `user` RENAME COLUMN `last_login` TO `last_login_at`",
+            "ALTER TABLE `email` ADD CONSTRAINT `fk_email_user_5b58673d` FOREIGN KEY "
+            "(`user_id`) REFERENCES `user` (`id`) ON DELETE CASCADE",
        ]
-    else:
+    elif isinstance(Migrate.ddl, PostgresDDL):
        assert Migrate.upgrade_operators == [
+            'ALTER TABLE "email" DROP CONSTRAINT "fk_email_user_5b58673d"',
            'ALTER TABLE "category" ADD "name" VARCHAR(200) NOT NULL',
-            'ALTER TABLE "user" ADD UNIQUE INDEX "uid_user_usernam_9987ab" ("username")',
+            'ALTER TABLE "user" ADD CONSTRAINT "uid_user_usernam_9987ab" UNIQUE ("username")',
+            'ALTER TABLE "user" RENAME COLUMN "last_login_at" TO "last_login"',
        ]
        assert Migrate.downgrade_operators == [
            'ALTER TABLE "category" DROP COLUMN "name"',
-            'ALTER TABLE "user" DROP INDEX "uid_user_usernam_9987ab"',
+            'ALTER TABLE "user" DROP CONSTRAINT "uid_user_usernam_9987ab"',
+            'ALTER TABLE "user" RENAME COLUMN "last_login" TO "last_login_at"',
+            'ALTER TABLE "email" ADD CONSTRAINT "fk_email_user_5b58673d" FOREIGN KEY ("user_id") REFERENCES "user" ("id") ON DELETE CASCADE',
        ]
+    elif isinstance(Migrate.ddl, SqliteDDL):
+        assert Migrate.upgrade_operators == [
+            'ALTER TABLE "email" DROP FOREIGN KEY "fk_email_user_5b58673d"',
+            'ALTER TABLE "category" ADD "name" VARCHAR(200) NOT NULL',
+            'ALTER TABLE "user" ADD UNIQUE INDEX "uid_user_usernam_9987ab" ("username")',
+            'ALTER TABLE "user" RENAME COLUMN "last_login_at" TO "last_login"',
+        ]
+        assert Migrate.downgrade_operators == []
+
+
+def test_sort_all_version_files(mocker):
+    mocker.patch(
+        "os.listdir",
+        return_value=[
+            "1_datetime_update.json",
+            "11_datetime_update.json",
+            "10_datetime_update.json",
+            "2_datetime_update.json",
+        ],
+    )
+
+    Migrate.migrate_location = "."
+
+    assert Migrate.get_all_version_files() == [
+        "1_datetime_update.json",
+        "2_datetime_update.json",
+        "10_datetime_update.json",
+        "11_datetime_update.json",
+    ]
Author	SHA1	Message	Date
long2ice	6339dc86a8	Fix migrate to new database error	2020-10-14 20:33:23 +08:00
long2ice	768747140a	update changelog	2020-10-12 21:01:53 +08:00
long2ice	1fde3cd04e	fix init KeyError (#61 )	2020-10-12 20:59:13 +08:00
long2ice	d0ce545ff5	Fix first version error	2020-10-10 15:07:09 +08:00
long2ice	09b89ed7d0	update README	2020-10-09 15:41:37 +08:00
long2ice	86c8382593	update README	2020-10-09 15:34:48 +08:00
long2ice	48e3ff48a3	update README.md	2020-10-09 12:04:36 +08:00
long2ice	1bf6d45bb0	Merge pull request #60 from tortoise/refactoring Refactoring migrate logic	2020-10-09 11:54:37 +08:00
long2ice	342f4cdd3b	complete refactoring	2020-10-09 11:53:50 +08:00
long2ice	8cace21fde	refactoring migrate logic	2020-10-09 00:05:22 +08:00
long2ice	9889d9492b	add ? when ask rename	2020-09-28 17:22:05 +08:00
long2ice	823368aea8	fix event loop error	2020-09-28 17:16:35 +08:00
long2ice	6b1ad46cf1	update README.md	2020-09-28 12:50:43 +08:00
long2ice	ce8c0b1f06	Support `db_constraint` in fk	2020-09-28 10:40:04 +08:00
long2ice	43922d3734	update CHANGELOG.md	2020-09-27 14:18:19 +08:00
long2ice	48c5318737	remove asyncclick	2020-09-25 18:27:08 +08:00
long2ice	002221e557	update README.md	2020-09-25 17:51:31 +08:00
long2ice	141d7205bf	Add `Rename` support	2020-09-25 17:48:32 +08:00
long2ice	af4d4be19a	Fix Postgres alter table	2020-09-24 15:02:28 +08:00
long2ice	3b4d9b47ce	update version	2020-09-23 18:33:31 +08:00
long2ice	4b0c4ae7d0	fix test error	2020-09-21 15:03:16 +08:00
long2ice	dc821d8a02	Merge remote-tracking branch 'origin/dev' into dev	2020-09-21 11:46:21 +08:00
long2ice	d18a6b5be0	add sqlite not support error	2020-09-21 11:44:34 +08:00
long2ice	1e56a70f21	Merge pull request #44 from saintlyzero/dev append new line in cp_models	2020-09-16 22:21:09 +08:00
saintlyzero	ab1e1aab75	append new line in cp_models	2020-09-16 19:30:03 +05:30
long2ice	00dd04f97d	update conftest.py	2020-09-10 18:42:19 +08:00
long2ice	fc914acc80	update README.md	2020-09-09 21:10:10 +08:00
long2ice	ac03ecb002	update README.md	2020-09-02 13:34:53 +08:00
long2ice	235ef3f7ea	fix datetime string format	2020-08-19 09:28:36 +08:00
long2ice	e00eb7f3d9	update README.md	2020-08-17 12:40:39 +08:00
long2ice	d6c8941676	update CHANGELOG.rst	2020-08-07 18:12:40 +08:00
long2ice	cf062c9310	update CHANGELOG.rst	2020-08-07 09:29:30 +08:00
long2ice	309adec8c9	Merge pull request #34 from moubctez/postgresql_unique PostgreSQL add/drop index/unique	2020-08-07 09:27:03 +08:00
Adam Ciarciński	8674142ba8	Fix test_migrate	2020-08-06 17:59:12 +02:00
Adam Ciarciński	cda9bd1c47	Save 1 space in tests	2020-08-06 17:50:28 +02:00
Adam Ciarciński	198e4e0032	Save 1 space	2020-08-06 17:49:26 +02:00
Adam Ciarciński	1b440477a2	PostgreSQL add/drop index/unique	2020-08-06 17:45:56 +02:00
long2ice	1263c6f735	Fix tortoise ssl config	2020-07-30 11:30:02 +08:00
long2ice	6504384879	update README.md	2020-07-29 10:30:25 +08:00
long2ice	17ab0a1421	fix version sort and add test	2020-07-29 10:21:43 +08:00