Manual:$wgPageLinksSchemaMigrationStage

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<translate> Database settings</translate>: $wgPageLinksSchemaMigrationStage
The pagelinks table schema migration stage, for normalising pl_namespace and pl_title fields.
<translate> Introduced in version:</translate>	1.41.0 (Gerrit change 955004; git #f405bbb5)
<translate> Removed in version:</translate>	<translate> still in use</translate>
<translate> Allowed values:</translate>	(integer)
<translate> Default value:</translate>	`SCHEMA_COMPAT_WRITE_OLD \| SCHEMA_COMPAT_READ_OLD //3`
<translate> Other settings:</translate> <translate> Alphabetical</translate> \| <translate> By function</translate>

Details

The pagelinks table schema migration stage, for normalising pl_namespace and pl_title fields.

Use the SCHEMA_COMPAT_XXX flags. Supported values:

SCHEMA_COMPAT_WRITE_OLD | SCHEMA_COMPAT_READ_OLD (= 1 | 2 = 3)
SCHEMA_COMPAT_WRITE_BOTH | SCHEMA_COMPAT_READ_OLD (= 257 | 2 = 259)