Documentation for the QUI module.

Sections

If you need to remove all data submitted before e.g. Feb 19th 2014, you can use the below query to look up the number of submissions. Replace @nid with the webform’s node id or set @nid with a SET @nid=<nid>; statement. Also don’t forget to edit the date to your needs.

important Queries contains dynamic database queries for retrieving data from drupal database. Some time we stuck due to didn't get proper result by provided functions. so here you can find different-2 queries. you can change conditions,fields etc according to your requirements.