wiki.techinc.nl/maintenance/archives/patch-page_restrictions-null.sql

-- (T218446) Make page.page_restrictions nullable in preparation for dropping it
ALTER TABLE /*_*/page
    CHANGE COLUMN page_restrictions page_restrictions TINYBLOB NULL;
Add schema change to make page.page_restrictions column nullable The page.page_restrictions field was used to store protection settings for pages before MediaWiki 1.10 introduced the page_restrictions table. update.php has since been running the updateRestrictions.php maintenance script to migrate data from the legacy field to the new table. In preparation for dropping this field, it is necessary to first make this column nullable, so that we can remove code that references it during write operations. This patch adds migrations for MySQL and SQLite to make the column type 'tinyblob NULL'. Postgres does not seem to require a schema change, as the field definition there is 'TEXT' rather than 'TEXT NOT NULL'. Bug: T218446 Change-Id: I626859cdb5ab81c504a986129d21059ab088b8bd 2020-03-18 23:33:48 +00:00			`-- (T218446) Make page.page_restrictions nullable in preparation for dropping it`
			`ALTER TABLE /_/page`
			`CHANGE COLUMN page_restrictions page_restrictions TINYBLOB NULL;`