php - Error format with group_concat in php mysql

Question

I have a sample data:

table(id, name) with name(varchar(255))

with data is

table(1, 'test1')
...
     (999, 'test999')
...

Query is Select GROUP_CONCAT(name) AS name FROM table And result is test1test2...test155 => can't get all name of table table, How to fix it ?

Answer 1

前のクエリのサイズを次のように増やしてみてgroup_concat_max_lenください。SESSION

SET SESSION group_concat_max_len = 1000000;

group_concat_max_len の MySQL マニュアル