'img_minor_mime',
'img_user',
'img_user_text',
- 'img_actor' => $wgActorTableSchemaMigrationStage > MIGRATION_OLD ? 'img_actor' : null,
+ 'img_actor' => $wgActorTableSchemaMigrationStage > MIGRATION_OLD ? 'img_actor' : 'NULL',
'img_timestamp',
'img_sha1',
] + CommentStore::getStore()->getFields( 'img_description' );