lets say there are several columns (c1, c2, c3, c4) It's okay for each column to be appeared several times, but I want to select all the columns with several columns distinct.
I want SELECT c1, DISTINCT(c2, c3), c4
something like this
but it doesnt work, and GROUP BY doesnt work as well.
somebody help me please
CodePudding user response:
You simply can use distrinct on
SELECT DISTINCT ON (c2, c3) *
FROM YOURTABLENAME