protected function _renameToTmp()
    {
        $tmpTableName = $this->_name;
        $tableNames = $this->_database->getTableNames();
        do {
            $tmpTableName .= '_bak';
        } while (in_array($tmpTableName, $tableNames));
        // Use quoteIdentifier() instead of prepareIdentifier() because the
        // temporary name is not identified as a keyword.
        $tmpTableName = $this->_database->quoteIdentifier($tmpTableName);
        $this->alter("RENAME TO $tmpTableName");
        return $tmpTableName;
    }
protected function _renameToTmp()
    {
        $tmpTableName = $this->_name;
        $tableNames = $this->_database->getTableNames();
        do {
            $tmpTableName .= '_bak';
        } while (in_array($tmpTableName, $tableNames));
        // Use quoteIdentifier() instead of prepareIdentifier() because the
        // temporary name is not identified as a keyword.
        $tmpTableName = $this->_database->quoteIdentifier($tmpTableName);
        $this->alter("RENAME TO $tmpTableName");
        return $tmpTableName;
    }
protected function _renameToTmp ( ) { $ tmpTableName = $ this -> _name ; $ tableNames = $ this -> _database -> getTableNames ( ) ; do { $ tmpTableName .= '_bak' ; } while ( in_array ( $ tmpTableName , $ tableNames ) ) ; // Use quoteIdentifier() instead of prepareIdentifier() because the // temporary name is not identified as a keyword. $ tmpTableName = $ this -> _database -> quoteIdentifier ( $ tmpTableName ) ; $ this -> alter ( "RENAME TO $tmpTableName" ) ; return $ tmpTableName ; }
Rename table to a unique temporary name

@return string New table name
Rename table to a unique temporary name