MySQL Group_Concat Repeating Values

Question

I am working on an open source project called PHP-Bouncer, and I\'m having issues with a MySQL Query I am writing for it. Basically we have three tables: BouncerRoles, PageI

Answer 1

You are probably joining a table with two tables on 1..n relationships, producing duplicate results.

• Use either GROUP_CONCAT( DISTINCT ...) or

• Use two subqueries: in each one use GROUP_CONCAT() with group by on each of the 2 tables. Then join the two subqueries and the main table.