How to delete duplicate rows with SQL – Xaprb
I assumed a beginner audience in my other article. Specifically, I assumed a beginner programmer who designs a table, connects some program to it, and then discovers a bunch of duplicate data because of incorrect table design. The programmer then has to find and delete the duplicate rows before putting unique indexes and primary keys on the data. And because I assumed a relatively small, non-mission-critical task, I suggested you can make a temporary table to aid in deleting the duplicate rows.