comma separated string of selected values in mysql

Question

I want to convert selected values into a comma separated string in MySQL. My initial code is as follows:

SELECT id FROM table_level where parent_id=4;
         


        

Answer 1

Try this

SELECT CONCAT('"',GROUP_CONCAT(id),'"') FROM table_level 
where parent_id=4 group by parent_id;

Result will be

 "5,6,9,10,12,14,15,17,18,779"