Hi, On Mar 11 05:31, Jesper K. Pedersen wrote: > Is it possible to use SQL to merge data into one result?
test=# SELECT id, info FROM concat_t; id | info ----+------ 1 | A 2 | B 1 | AA 3 | C 1 | D 1 | DD (6 rows) test=# SELECT array_to_string(ARRAY(SELECT info FROM concat_t WHERE id = 1), ' '); array_to_string ----------------- A AA D DD (1 row) HTH Regards. ---------------------------(end of broadcast)--------------------------- TIP 9: In versions below 8.0, the planner will ignore your desire to choose an index scan if your joining column's datatypes do not match