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Generic hack to avoid duplicate index names

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REGEXP gets replaced with '~'
Added a hack to handle "ON DUPLICATE KEY" 
Moved handling field names with CAPITALS near the end
Added support for "INTERVAL 15 DAY" found in Akismet 2.2.7

git-svn-id: https://plugins.svn.wordpress.org/postgresql-for-wordpress/trunk@194346 b8457f37-d9ea-0310-8a92-e5e31aec5664
This commit is contained in:
hawk__
2010-01-16 00:11:44 +00:00
parent bd7e006439
commit 64b0c9cf08
2 changed files with 49 additions and 26 deletions
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pg4wp/driver_pgsql.php
+36 -23
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@@ -124,25 +124,6 @@
// Remove illegal characters
$sql = str_replace('`', '', $sql);
// Field names with CAPITALS need special handling
if( false !== strpos($sql, 'ID'))
{
$pattern = '/ID([^ ])/';
$sql = preg_replace($pattern, 'ID $1', $sql);
$pattern = '/ID$/';
$sql = preg_replace($pattern, 'ID ', $sql);
$pattern = '/\(ID/';
$sql = preg_replace($pattern, '( ID', $sql);
$pattern = '/,ID/';
$sql = preg_replace($pattern, ', ID', $sql);
$pattern = '/[a-zA-Z_]+ID/';
$sql = preg_replace($pattern, '"$0"', $sql);
$pattern = '/\.ID/';
$sql = preg_replace($pattern, '."ID"', $sql);
$pattern = '/[\s]ID /';
$sql = preg_replace($pattern, ' "ID" ', $sql);
} // CAPITALS
if( 0 === strpos($sql, 'SELECT'))
{
$logto = 'SELECT';
@@ -251,6 +232,18 @@
$sql = str_replace( '), (', ');'.$insert.'(', $sql);
}
// Support for "INSERT ... ON DUPLICATE KEY UPDATE ..." is a dirty hack
// consisting in deleting the row before inserting it
if( false !== $pos = strpos( $sql, 'ON DUPLICATE KEY'))
{
// Remove 'ON DUPLICATE KEY UPDATE...' and following
$sql = substr( $sql, 0, $pos);
// Get the elements we need (table name, first field, value)
$pattern = '/INSERT INTO (\w+)\s+\(([^,]+).+VALUES\s+\(([^,]+)/';
preg_match($pattern, $sql, $matches);
$sql = 'DELETE FROM '.$matches[1].' WHERE '.$matches[2].' = '.$matches[3].';'.$sql;
}
// To avoid Encoding errors when inserting data coming from outside
if( preg_match('/^.{1}/us',$sql,$ar) != 1)
$sql = utf8_encode($sql);
@@ -261,6 +254,7 @@
$logto = 'DELETE';
// LIMIT is not allowed in DELETE queries
$sql = str_replace( 'LIMIT 1', '', $sql);
$sql = str_replace( ' REGEXP ', ' ~ ', $sql);
}
// Fix tables listing
elseif( 0 === strpos($sql, 'SHOW TABLES'))
@@ -324,8 +318,7 @@ WHERE bc.oid = i.indrelid
$index = $matches[3];
$columns = $matches[4];
// Workaround for index name duplicate
if( $table == $table_prefix.'usermeta' && $index == 'meta_key')
$index = 'umeta_key';
$index = $table.'_'.$index;
$sql = "CREATE {$unique}INDEX $index ON $table ($columns)";
}
}
@@ -396,14 +389,34 @@ WHERE pg_class.relname='$table_name' AND pg_attribute.attnum>=1 AND NOT pg_attri
$index = $match[2];
$columns = $match[3];
// Workaround for index name duplicate
if( $table == $table_prefix.'usermeta' && $index == 'meta_key')
$index = 'umeta_key';
$index = $table.'_'.$index;
$sql .= "\nCREATE {$unique}INDEX $index ON $table ($columns);";
}
// Now remove handled indexes
$sql = preg_replace( $pattern, '', $sql);
}// CREATE TABLE
// Field names with CAPITALS need special handling
if( false !== strpos($sql, 'ID'))
{
$pattern = '/ID([^ ])/';
$sql = preg_replace($pattern, 'ID $1', $sql);
$pattern = '/ID$/';
$sql = preg_replace($pattern, 'ID ', $sql);
$pattern = '/\(ID/';
$sql = preg_replace($pattern, '( ID', $sql);
$pattern = '/,ID/';
$sql = preg_replace($pattern, ', ID', $sql);
$pattern = '/[a-zA-Z_]+ID/';
$sql = preg_replace($pattern, '"$0"', $sql);
$pattern = '/\.ID/';
$sql = preg_replace($pattern, '."ID"', $sql);
$pattern = '/[\s]ID /';
$sql = preg_replace($pattern, ' "ID" ', $sql);
$pattern = '/"ID "/';
$sql = preg_replace($pattern, ' "ID" ', $sql);
} // CAPITALS
// Empty "IN" statements are erroneous
$sql = str_replace( 'IN (\'\')', 'IN (NULL)', $sql);
$sql = str_replace( 'IN ( \'\' )', 'IN (NULL)', $sql);