Simplifying Complex Column Queries Using Common Table Expressions

Rolling Time Window with Distinct Count in Big SQL using DENSE_RANK() Function

Converting Sybase SQL to DB2 SQL: A Step-by-Step Guide to Resolving Unexpected Token Errors

Workaround SQLSTATE 58004: Error 'Invalid QNC Assignment' when using NULL in JSON_OBJECT() with LISTAGG in DB2 LUW

The provided code is not a single function or script, but rather a collection of SQL queries that can be used as part of a larger program or application.