DBAL-34: MySql getListTableForeignKeysSQL doesn't work for 5.0.xx

[doctrinebot]

Jira issue originally created by user tiw:

The sql contains mysql specific code. And for the mysql 5.0.xxx the sql statement has syntax error.

in /Doctrine/DBAL/Platforms/MySqlPlatform.php:
public function getListTableForeignKeysSQL($table, $database = null)
{
$sql = "SELECT DISTINCT k.CONSTRAINT*NAME, k.COLUMN_NAME, k.REFERENCED_TABLE*NAME, ".
"k.REFERENCED*COLUMN_NAME /_!50116 , c.update_rule, c.delete_rule / ".
"FROM information_schema.key_column_usage k /!50116 ".
"INNER JOIN information_schema.referential_constraints c ON ".
" c.constraint_name = k.constraint_name AND ".
" c.table_name = '$table' */ WHERE k.table_name = '$table'";

    if ($database) {
        $sql .= " AND k.table*schema = '$database' AND c.constraint*schema = '$database'";
    }

    $sql .= " AND `REFERENCED*COLUMN*NAME` is not NULL";

    return $sql;

}

For the mysql lower as 5.1.16 the SQL could be as the following:

SELECT DISTINCT k.CONSTRAINT*NAME, k.COLUMN_NAME, k.REFERENCED_TABLE_NAME, k.REFERENCED_COLUMN_NAME FROM information_schema.key_column_usage k WHERE k.table_name = 'some_table' AND k.table_schema = 'some database' AND c.constraint_schema = 'some database' AND REFERENCED_COLUMN*NAME is not NULL

In this statement there is no reference of c

[doctrinebot]

Comment created by @beberlei:

Fixed

[doctrinebot]

Issue was closed with resolution "Fixed"

[doctrinebot]

Comment created by gedrox:

Pity that because of this the Doctrine schema-tool update action reports incorrect change list.
It tries to drop/add foreign keys because "ON DELETE CASCADE" option isn't read from the database at all.

[doctrinebot]

Comment created by @beberlei:

5.0.x has no way to export the CASCADE details. Its just not possible to get this data in 5.0

[github-actions]

This thread has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.