逗号链接的字符串模糊查询怎样写？

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，查询得到

id uid

1 1,2

2 2,6,11

3 2

CHARINDEX(',',NAME)-1指定某字段中逗号开始的位置，-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')
go
declare @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

（所影响的行数为 3 行）
*/
select * from table1 where ','+ uid +',' like '%,'+cast(@uid as varchar) + ',%'
/*
id          uid
----------- ----------
1           1,2
2           2,6,11
3           2

（所影响的行数为 3 行）
*/

drop table table1

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