Should I handle invalid queries ?

[iamludal]

Currently, the different statements (SELECT, UPDATE...) include a basic query validation.

Example:

Select.php

  protected function validate(): void
   {
       $conditions = [
           $this->table != null,
           count($this->columns) > 0
       ];

       if (in_array(false, $conditions))
           throw new InvalidQueryException();
   }

In the previous code snippet, we verify that the table has been set and that there are columns to select.

The Question

Should this validation be made by this library ? Or should it be the user's responsibility, letting PDO throw an error ?

If the validation should be made by the library, how strong does it have to be ?