wiki.techinc.nl/docs/databases/sqlite.txt

SQLite schema is automatically generated from the abstract schema.
You can see the generated schema in maintenance/sqlite/tables-generated.sql

For more information on abstract schema see:
https://www.mediawiki.org/wiki/Manual:Schema_changes

SQLite in MediaWiki also accepts MySQL and there are a set of compatibility
regexes to convert MySQL syntax to SQLite syntax:

* BINARY() and VARBINARY() fields are converted to BLOB
* the UNSIGNED modifier is removed
* "INT" fields are converted to "INTEGER"
* ENUM is converted to BLOB
* the BINARY collation modifier is removed
* AUTO_INCREMENT is converted to AUTOINCREMENT
* Any table options are removed
* Truncated indexes are upgraded to full-width indexes
* FULLTEXT indexes are converted to ordinary indexes
docs: Update database related documentation a bit - Remove all of PG-related schema docs, explain it's automatically generated. - Similar for Sqlite. - Avoid calling $dbr->select(). - wfGetDB() is deprecated. Bug: T313863 Change-Id: Iad099c73009983008af1e4215ba9f3a05120be62 2022-08-26 14:12:42 +00:00			`SQLite schema is automatically generated from the abstract schema.`
			`You can see the generated schema in maintenance/sqlite/tables-generated.sql`

			`For more information on abstract schema see:`
			`https://www.mediawiki.org/wiki/Manual:Schema_changes`

			`SQLite in MediaWiki also accepts MySQL and there are a set of compatibility`
			`regexes to convert MySQL syntax to SQLite syntax:`
For backport to 1.14. * Made the upgrader work with SQLite * Implemented missing schema info functionality in DatabaseSqlite * Merged the SQLite and MySQL schemas into the one file with the help of some replaceVars() hacks. * Moved all primary key definitions to the field definition, moved all indexes to CREATE INDEX statements, for best SQLite compatibility. * Made all autoincrement fields primary keys, as required by SQLite. * Removed meaningless buzzword from the category table comment * tables.sql: s/'0'/0/ * In SQLite the index names have DB scope. Renamed archive.usertext_timestamp, user_newtalk.user_id, user_newtalk.user_ip * SQLite does not support UPDATE with LIMIT by default. Removed all instances I could find. * Made query errors work in the installer. * Fixed DatabaseSqlite::lastErrno(), made SQLITE_SCHEMA errors automatically reissue the query as suggested on sqlite-users. Otherwise upgrade breaks. * Removed miscellaneous status information from getServerVersion(), that's not the place to put it 2009-01-15 06:56:58 +00:00
			`* BINARY() and VARBINARY() fields are converted to BLOB`
			`* the UNSIGNED modifier is removed`
			`* "INT" fields are converted to "INTEGER"`
			`* ENUM is converted to BLOB`
			`* the BINARY collation modifier is removed`
			`* AUTO_INCREMENT is converted to AUTOINCREMENT`
			`* Any table options are removed`
			`* Truncated indexes are upgraded to full-width indexes`
			`* FULLTEXT indexes are converted to ordinary indexes`