protected function SelectQuery_sqlsrv::replaceExpressionAliases in Drupal driver for SQL Server and SQL Azure 7.2

Same name and namespace in other branches

1. 7.3 sqlsrv/select.inc \SelectQuery_sqlsrv::replaceExpressionAliases()

This function needs some work....

Parameters

mixed $statement:

Return value

mixed

1 call to SelectQuery_sqlsrv::replaceExpressionAliases()

SelectQuery_sqlsrv::__toString in sqlsrv/select.inc

Implements PHP magic __toString method to convert the query to a string.

File

sqlsrv/select.inc, line 259

Class

SelectQuery_sqlsrv

Code

protected function replaceExpressionAliases($statement) {

  // References to expressions in cross-apply need to be updated.
  // Now we need to update all references to the expression aliases
  // and point them to the CROSS APPLY alias.
  if (!empty($this->cross_apply_aliases)) {
    $regex = str_replace('{0}', implode('|', array_keys($this->cross_apply_aliases)), self::RESERVED_REGEXP_BASE);

    // Add and then remove the SELECT
    // keyword. Do this to use the exact same
    // regex that we have in DatabaseConnection_sqlrv.
    $statement = 'SELECT ' . $statement;
    $statement = preg_replace_callback($regex, array(
      $this,
      'replaceReservedAliases',
    ), $statement);
    $statement = substr($statement, 7, strlen($statement) - 7);
  }
  return $statement;
}