Postgresql GROUP_CONCAT equivalent?

Question

I have a table and I\'d like to pull one row per id with field values concatenated.

In my table, for example, I have this:

TM67 | 4  | 32556
TM67 | 9         


        

Answer 1

Since 9.0 this is even easier:

SELECT id, 
       string_agg(some_column, ',')
FROM the_table
GROUP BY id