Suppose I have a data set such as this:
ColA ColB
==== ====
Foo Green
Foo Purple
Bar Magenta
Bar Green
Foo Purple
Bar Purple
Bar Purple
Foo Green
Bar Green
I would like to query this data and return the below. Essentially, take all distinct values from ColA (Foo & Bar) and return all distinct values for EACH of them from ColB:
ColA ColB
==== ====
Foo Green
Foo Purple
Bar Magenta
Bar Green
Bar Purple
I know I'm overthinking this...but I can't seem to hammer it out...
Please use of of the below -
SELECT DISTINCT cola,colb FROM yourtableName
OR
SELECT cola,colb From yourtableName
GROUP BY cola,colb
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.