欢迎使用CSDN-markdown编辑器

一行分多行

create table test1 ( n int );
insert into test1 values (1), (2), (3), (4), (5), (6), (7), (8), (9), (10);


select substring_index(substring_index(m.msg,',',t.n),',',-1) ,t.n from ts_msg m,test1 t where char_length(m.msg) - char_length(replace(m.msg,',','')) >= t.n -1