Manual:$wgChangeTagsSchemaMigrationStage/ja

$wgChangeTagsSchemaMigrationStage は  テーブル スキーマ移行の段階を示します. Most wikis can set this to  and run   as soon as any necessary extensions are updated.



詳細
$wgChangeTagsSchemaMigrationStage can be set to one of the Schema change migration flags. The allowed value range for the configuration is one of the  constants. The available constants and their planned use cases on Wikimedia Foundation wikis are as follows:


 * (0, 既定値) - 古いスキーマのみを読み書きします. 新しいスキーマが存在する必要すらありません.  This is used from when the patch is merged until the schema change is actually applied to the database.
 * (1) - 新旧両方のスキーマに書き込みます. Read the new schema preferentially, falling back to the old. This is used while the change is being tested, allowing easy roll-back to the old schema.
 * (2) - 新しいスキーマのみに書き込みます. Read the new schema preferentially, falling back to the old. This is used while running the maintenance script to migrate existing entries in the old schema to the new schema.
 * (3) - 新しいスキーマのみを読み書きします. The old schema (and the feature flag) may now be removed.

For non-Wikimedia Foundation wikis it is recommended to set this to  and to run   in order to take advantage of the new schema.