0f13fff160
WMF DBAs have been doing a massive effort to convert UNIQUE KEYS into PRIMARY KEY. Having a PK is essential to do maintenance, specially on large tasks. By not having a PK it is impossible to add it in a safe way if not done directly on the master. Having a PK means that we can easily change the PK into another one if needed in the future. The ones we chose might not be the best ones, but will allow us to get them changed. Bug: T172514 Change-Id: Id635297838938c7c5dfe65d45285a4d16d65152d
24 lines
No EOL
756 B
SQL
24 lines
No EOL
756 B
SQL
CREATE TABLE /*_*/iwlinks_tmp (
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-- page_id of the referring page
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iwl_from int unsigned NOT NULL default 0,
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-- Interwiki prefix code of the target
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iwl_prefix varbinary(20) NOT NULL default '',
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-- Title of the target, including namespace
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iwl_title varchar(255) binary NOT NULL default '',
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PRIMARY KEY (iwl_from,iwl_prefix,iwl_title)
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) /*$wgDBTableOptions*/;
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INSERT INTO /*_*/iwlinks_tmp
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SELECT * FROM /*_*/iwlinks;
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DROP TABLE /*_*/iwlinks;
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ALTER TABLE /*_*/iwlinks_tmp RENAME TO /*_*/iwlinks;
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-- Index for ApiQueryIWBacklinks
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CREATE INDEX /*i*/iwl_prefix_title_from ON /*_*/iwlinks (iwl_prefix, iwl_title, iwl_from);
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-- Index for ApiQueryIWLinks
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CREATE INDEX /*i*/iwl_prefix_from_title ON /*_*/iwlinks (iwl_prefix, iwl_from, iwl_title); |