-
由 eileencodes 提交于
This PR adds support for `if_exists` on `remove_column` and `if_not_exists` on `add_column` to support silently ignoring migrations if the remove tries to remove a non-existent column or an add tries to add an already existing column. We (GitHub) have custom monkey-patched support for these features and would like to upstream this behavior. This matches the same behavior that is supported for `create_table` and `drop_table`. The behavior for sqlite is different from mysql/postgres and sqlite for remove column and that is reflected in the tests.
95ed7e78
可在Tags中查看这些版本中当前仓库的状态.