query performance related issues & queries in DbaXchanger
















Should NOT IN be avoided?

sql-server performance except
Updated December 05, 2018 20:06 PM

Subtract from two MYSQL Queries

mysql query
Updated December 05, 2018 16:06 PM









query on 2 fields but 1 is a unique value

postgresql query
Updated December 04, 2018 15:06 PM













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