表名 table1
字段 id uid
1 1,2
2 2,6,11
3 2
4 3,4
5 4,5,7
6 6,9
如id=2，查詢得到
id uid
1 1,2
2 2,6,11
3 2
charindex(',',name)-1指定某字段中逗號開始的位置，-1是去除『，』本身的位置
sql code
create table table1 (id int, uid varchar(10))
insert into table1 values(1 , '1,2')
insert into table1 values(2 , '2,6,11')
insert into table1 values(3 , '2')
insert into table1 values(4 , '3,4')
insert into table1 values(5 , '4,5,7')
insert into table1 values(6 , '6,9')
godeclare @uid as int
set @uid = 2
select * from table1 where charindex(','+cast(@uid as varchar) + ',' , ','+ uid +',') > 0
/*id uid
----------- ----------
1 1,2
2 2,6,11
3 2
（所影響的行數為 3 行）
*/select * from table1 where ','+ uid +',' like '%,'+cast(@uid as varchar) + ',%'
/*id uid
----------- ----------
1 1,2
2 2,6,11
3 2
（所影響的行數為 3 行）*/
drop table table1
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