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<?php
if ($conf['database']['dbtype'] == 'pgsql') {
$db->query('ALTER TABLE {prefs} ALTER COLUMN pref_value TYPE text');
$db->query('ALTER TABLE {prefs} ALTER COLUMN pref_value SET DEFAULT \'\'');
}
elseif($db->dbtype=='mysqli' || $db->dbtype=='mysql') {
$sinfo=$db->dblink->serverInfo();
if(isset($sinfo['version']) && version_compare($sinfo['version'], '5.5.3')>=0 ){
$db->query('ALTER TABLE {prefs} CHANGE `pref_value` `pref_value` TEXT CHARACTER SET utf8mb4 COLLATE utf8mb4_bin NOT NULL');
}else{
$db->query('ALTER TABLE {prefs} CHANGE `pref_value` `pref_value` TEXT CHARACTER SET utf8 COLLATE utf8_bin NOT NULL');
}
}
else{
$db->query('ALTER TABLE {prefs} CHANGE `pref_value` `pref_value` TEXT CHARACTER SET utf8 COLLATE utf8_bin NOT NULL');
}
?>
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