Question

我正在尝试计算sqlite表GROUP by msisdn中的联系人。

没有GROUP BY msisdn返回210 GROUP BY msisdn返回1

var queryTotal   = db.execute('SELECT cid , COUNT(*) AS totalFriends FROM contact WHERE deleted = 0 AND synced = 1 GROUP BY msisdn');
var total = queryTotal.fieldByName('totalFriends');

            alert(total);

这里有什么问题！

Answer 1

您确定您的查询是否正确？

 SELECT cid , COUNT(*) AS totalFriends FROM contact WHERE deleted = 0 AND synced = 1 GROUP BY msisdn

尝试：

GROUP BY cid

Answer 2

您应该在所选列中包含msisdn：

SELECT msisdn ，COUNT（*）AS totalFriends FROM contact WHERE deleted = 0 AND synced = 1 GROUP BY msisdn

sqlite COUNT分组返回1？

2 个答案: