SqlPreprocessor generates wrong query for UNION

[KacerCZ]

Version: 3.0.5

Bug Description

When running SQL query with UNION and with limit set on result of UNION, parameters are inserted directly into query and not passed via placeholders.

(select id from product where id<?) union (select id from product) limit ? offset ?

Steps To Reproduce

Run following code:

$database = $this->context->getByType(\Nette\Database\Connection::class);
$database->query('(select id from product where id<?) union (select id from product) limit ? offset ?', 3, 5, 2);

Generated query:

(select id from product where id<'3') union (select id from product) limit '5' offset '2'

Result is exception "SQLSTATE[42000]: Syntax error or access violation: 1064 You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near ''5' offset '2'' at line 1".

Database is MariaDB, used driver class is MySqlDriver from nette/database.

Expected Behavior

Placeholders are used and query after preprocessing looks like this:

(select id from product where id<?) union (select id from product) limit ? offset ?