transpose column headers to rows in postgresql

Question

I have a view which looks like this

          value1count     value2count value3count
          ----------------------------------------
             25             


        

Answer 1

Crosstab only does the reverse of what you need, but this should help you:

First create the unnest() function that is included in 8.4, see here for instructions.

Then you can do this (based on this post):

SELECT
   unnest(array['value1Count', 'value2Count', 'value3Count']) AS "Values",
   unnest(array[value1Count, value2Count, value3Count]) AS "Count"
FROM view_name
ORDER BY "Values"

I can verify that this works in 8.4, but because I don't have 8.1, I can't promise it will work the same.