MySqlDriver driver knows about subqueries now.

[smuuf]

As MySQL/MariaDB clearly does support subqueries.

This enables proper building of queries like...

$table('table_a')
  ->where(
    'table_a.column_one IN',
    $table('table_b')->select('value')
  )

... without executing the inner query first.

See https://dev.mysql.com/doc/refman/8.0/en/subqueries.html
and https://mariadb.com/kb/en/subqueries/

• bug fix / new feature? Both, I think.
• BC break? Who knows.

[dg]

Thanks

[lulco]

Hi @smuuf and @dg

We just found problematic case here with subqueries:

$table('table_a')
  ->where(
    'table_a.column_one IN',
    $table('table_b')->select('value')->limit(100)
  )

Adding limit to subquery throws error:

This version of MySQL doesn't yet support 'LIMIT & IN/ALL/ANY/SOME subquery' 

Mysql doc https://dev.mysql.com/doc/refman/8.0/en/subquery-restrictions.html reads:

MySQL does not support LIMIT in subqueries for certain subquery operators

[dg]

I temporarily reverted it until we found a solution.