How to write a query that does something similar to MySQL's GROUP_CONCAT in Oracle?

Question

When I run the following SQL query in my Oracle database:

SELECT p.pkt_nazwa, 
       u.us_nazwa 
FROM   punkty p, 
       kategorie_uslug ku, 
       usluga         


        

Answer 1

Here's an article explaining some approaches to what you're trying to do in Oracle:

http://www.oracle-base.com/articles/misc/StringAggregationTechniques.php

Note that if you're running 11g Release 2 then LISTAGG is the way to go.