分隔字符，选定需要的行

create table temp_T1(   ID int,   U1 varchar(100),   U2 varchar(100)   )insert into temp_T1 select 1,'AA2,BB3,AA,AA4',''insert into temp_T1 select 2,'DD1,DD2',''insert into temp_T1 select 3,'CC1',''insert into temp_T1 select 4,'EE8,AA',''insert into temp_T1 select 5,'XX',''insert into temp_T1 select 6,'','TT'insert into temp_T1 select 7,'CCCC',''insert into temp_T1 select 8,'','AA'insert into temp_T1 select 9,'BXXX',''select * from temp_T1ID          U1                                                                                                   U2----------- ---------------------------------------------------------------- ----------------------------------------------------------------1           AA2,BB3,AA,AA4                                                                                       2           DD1,DD2                                                                                              3           CC1                                                                                                  4           EE8,AA                                                                                               5           XX                                                                                                   6                                                                                                                TT7           CCCC                                                                                                 8                                                                                                                AA9           BXXX                                                                                                 (9 行受影响)

--漏写分隔符select *from tbwhere ','+u1+',' like '%,AA,%' or ','+u2+',' not like '%,AA,%'