sqlcmd.net validated sql reference

Tag archive

#deduplication

Commands grouped around the same concept, pattern, or recurring problem.

2 commands with this tag Browse related patterns quickly
advanced deduplication MySQL MariaDB SQL Server PostgreSQL SQLite

Delete Duplicate Rows While Keeping One

Use `ROW_NUMBER()` to identify duplicate rows and delete every copy except the one you want to keep.

beginner deduplication MySQL MariaDB SQL Server PostgreSQL SQLite

Return Distinct Values

Use `DISTINCT` to remove duplicate rows from a result set.