Keith Yap

Things I've Learnt



Exluding SQL results with Left Outer Join

Imagine you have a data set ‘a’ which contains data from another data set ‘b’. You want to retrieve the data that exists in ‘a’ but not in b. This can be accomplished using a left outer join filtering on… Continue Reading →

© 2020 Keith Yap — Powered by WordPress

Theme by Anders NorenUp ↑