mysql - FIND_IN_SET sql查询

Question

我有如下查询。

SELECT Id, FIND_IN_SET('22', Category ) >0 AS `tot_cat` 
FROM tbl_doctorprofile

我得到结果 1 在哪一行我得到值 '22' 否则 0 .. 所以结果如下所示。

Id tot_cat
----------
1    0
2    0
3    1
4    0

但我只想要值为 1 的行数。

score 2 · Accepted Answer

所以只需对列求和：

SELECT SUM(FIND_IN_SET('22', Category ) >0) AS `tot_cat` 
FROM tbl_doctorprofile

或正式一点更好：

SELECT COUNT(*)
WHERE FIND_IN_SET('22', Category ) > 0
FROM tbl_doctorprofile

score 1 · Accepted Answer

尝试这个：

SELECT Id, 
       COUNT(CASE WHEN FIND_IN_SET('22', Category ) > 0 THEN 1 END) AS `tot_cat` 
FROM tbl_doctorprofile

score 1 · Accepted Answer

您可以使用以下查询，它必须对您有所帮助

 SELECT COUNT(1) FROM 
(SELECT Id, FIND_IN_SET('22', Category ) >0 AS `tot_cat` 
FROM tbl_doctorprofile ) t WHERE t.tot_cat!=0;

score 0 · Accepted Answer

你想要这个吗？

SELECT Id, FIND_IN_SET('22', Category ) >0 AS `tot_cat` 
FROM tbl_doctorprofile
HAVING `tot_cat` = 1

4 回答 4