[DBAL-82] orderBy(), setFirstResult() bug with MSSQL Server

Sun, 31 Jul 2011 10:20:54 +0000

QueryBuilder

		$query = $this->createQueryBuilder('account')
					  ->select('account')
					  ->orderBy('account.id', 'DESC')
					  ->getQuery();

                $result = $query->setMaxResults($this->resultsPerPage+1)
        							->setFirstResult($this->offset)
        							->getResult();

The above, when using "setFirstResult" and "orderBy" (like that), results in an error like so:

SQLSTATE[42000]: [Microsoft][SQL Server Native Client 10.0][SQL Server]The multi-part identifier "t0_.id" could not be bound.

With a statement that looks something like so:

WITH outer_tbl AS (SELECT ROW_NUMBER() OVER (ORDER BY t0_.id DESC) AS "doctrine_rownum",   ...

The reason the error is occurring is because you apparently need to use the "alias" (e.g, SELECT t0_.id AS id0) "id0" in the "ORDER BY" clause.

So query will run with no problems if t0_.id as id0

WITH outer_tbl AS (SELECT ROW_NUMBER() OVER (ORDER BY id0 DESC) AS "doctrine_rownum",   ...

It looks like this behavior might only occur with Microsoft SQL Server, but it is a bug.

---------------

If you go into:
Doctrine\DBAL\Platforms\MsSqlPlatform

Find:

$over = preg_replace('/\"[^,]*\".\"([^,]*)\"/i', '"inner_tbl"."$1"', $orderby);

Add before:

                    # Get Columns
                    $columns = array();
                    if(preg_match_all('/([a-zA-Z][0-9]+_\.[a-zA-Z0-9\-_]+)\sAS\s([a-zA-Z0-9\-\_]+)/', $query, $matched)) {
                        for($i=0; $i<count($matched[1]); ++$i)
                        {
                            $columns[$matched[1][$i]] = $matched[2][$i];
                        }
                    }
                    
                    # Replace columns with their alias in the "orderby" statement
                    if(preg_match_all('/([a-zA-Z][0-9]+_\.[a-zA-Z0-9\-_]+)\s/i', $orderby, $matches)) {
                        foreach($matches[1] as $column) 
                        {
                            $orderby = preg_replace('/'.$column.'/', $columns[$column], $orderby);
                        }
                    }

Obviously this is a really ugly hack, but this resolves it.

Doctrine Project

[DBAL-82] orderBy(), setFirstResult() bug with MSSQL Server