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<?php
/**
*
* @package dbal
* @copyright (c) 2013 phpBB Group
* @license http://opensource.org/licenses/gpl-2.0.php GNU General Public License v2
*
*/
/**
* @ignore
*/
if (!defined('IN_PHPBB'))
{
exit;
}
/**
* MSSQL Database Base Abstraction Layer
* @package dbal
*/
abstract class phpbb_db_driver_mssql_base extends phpbb_db_driver
{
/**
* {@inheritDoc}
*/
public function sql_concatenate($expr1, $expr2)
{
return $expr1 . ' + ' . $expr2;
}
/**
* Escape string used in sql query
*/
function sql_escape($msg)
{
return str_replace(array("'", "\0"), array("''", ''), $msg);
}
/**
* {@inheritDoc}
*/
function sql_lower_text($column_name)
{
return "LOWER(SUBSTRING($column_name, 1, DATALENGTH($column_name)))";
}
/**
* Build LIKE expression
* @access private
*/
function _sql_like_expression($expression)
{
return $expression . " ESCAPE '\\'";
}
/**
* Build db-specific query data
* @access private
*/
function _sql_custom_build($stage, $data)
{
return $data;
}
}
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