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Fix #2244 unnecessary composite index on tags table @Elkha

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This commit is contained in:
Kijin Sung 2023-12-31 00:23:29 +09:00
parent f16da70c64
commit 6328005ace
2 changed files with 13 additions and 8 deletions
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19
modules/tag/tag.class.php
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@ -12,8 +12,7 @@ class Tag extends ModuleObject
*/
public function moduleInstall()
{
$oDB = DB::getInstance();
$oDB->addIndex('tags', 'idx_tag', array('document_srl', 'tag'));
}
/**
@ -21,9 +20,10 @@ class Tag extends ModuleObject
*/
public function checkUpdate()
{
// tag in the index column of the table tag
// Convert unnecessary composite index into a single-column index.
$oDB = DB::getInstance();
if (!$oDB->isIndexExists('tags', 'idx_tag'))
$index = $oDB->getIndexInfo('tags', 'idx_tag');
if (!$index || count($index->columns) > 1)
{
return true;
}
@ -35,11 +35,16 @@ class Tag extends ModuleObject
*/
public function moduleUpdate()
{
// tag in the index column of the table tag
// Convert unnecessary composite index into a single-column index.
$oDB = DB::getInstance();
if (!$oDB->isIndexExists('tags', 'idx_tag'))
$index = $oDB->getIndexInfo('tags', 'idx_tag');
if (!$index || count($index->columns) > 1)
{
$oDB->addIndex('tags', 'idx_tag', array('document_srl', 'tag'));
if ($index)
{
$oDB->dropIndex('tags', 'idx_tag');
}
$oDB->addIndex('tags', 'idx_tag', ['tag']);
}
}
}