Fix multi inserts in SQLite.

This commit is contained in:
Taylor Otwell 2013-01-06 19:06:50 -06:00
parent 0f690e83a0
commit 53b94468cd
1 changed files with 46 additions and 0 deletions

View File

@ -21,4 +21,50 @@ protected function orderings(Query $query)
return 'ORDER BY '.implode(', ', $sql); return 'ORDER BY '.implode(', ', $sql);
} }
/**
* Compile a SQL INSERT statement from a Query instance.
*
* This method handles the compilation of single row inserts and batch inserts.
*
* @param Query $query
* @param array $values
* @return string
*/
public function insert(Query $query, $values)
{
// Essentially we will force every insert to be treated as a batch insert which
// simply makes creating the SQL easier for us since we can utilize the same
// basic routine regardless of an amount of records given to us to insert.
$table = $this->wrap_table($query->from);
if ( ! is_array(reset($values)))
{
$values = array($values);
}
// If there is only one record being inserted, we will just use the usual query
// grammar insert builder because no special syntax is needed for the single
// row inserts in SQLite. However, if there are multiples, we'll continue.
if (count($values) == 1)
{
return parent::insert($query, $values[0]);
}
$names = $this->columnize(array_keys($values[0]));
$columns = array();
// SQLite requires us to build the multi-row insert as a listing of select with
// unions joining them together. So we'll build out this list of columns and
// then join them all together with select unions to complete the queries.
foreach (array_keys($values[0]) as $column)
{
$columns[] = '? AS '.$this->wrap($column);
}
$columns = array_fill(9, count($values), implode(', ', $columns));
return "INSERT INTO $table ($names) SELECT ".implode(' UNION SELECT ', $columns);
}
} }