mysql怎么计算合计 mysql计算总和语句

mysql 查询结果求和1、创建三张测试表,
create table pw_memberinfo(uid int, name varchar(20));
create table pw_members(companyid int, uid int);
create table pw_memberdata(uid int, deposit int, ddeposit int, money int);
2、三张表,分别插入测试数据,
insert into pw_members values(1, 1);
insert into pw_members values(1, 2);
insert into pw_members values(1, 3);
insert into pw_memberinfo values(1, 'name_1');
insert into pw_memberinfo values(2, 'name_2');
insert into pw_memberinfo values(3, 'name_3');
insert into pw_memberdata values(1,30,50,150);
insert into pw_memberdata values(2,77,50,12);
insert into pw_memberdata values(3,44,50,82);
【mysql怎么计算合计 mysql计算总和语句】3、查看pw_memberdata表中的记录,select * from pw_memberdata t,
4、编写sql语句,
select * from (SELECT i.uid, sum(deposit ddeposit money) as allmoney
FROM pw_memberinfo i
LEFT JOIN pw_members m ON m.uid=i.uid
LEFT JOIN pw_memberdata d ON i.uid=d.uid
group by i.uid
) t where allmoney200
MYSQL如何查询计算出合计 。题主这个问题可以通过以idz和a这两个字段分组汇总获得 。下面是具体的sql语句供参考:
select a,sum(b) as totalQty
from tblName where idz=10
group by idz,a;
注意idz如果不是数字则筛选10要对其加单引号
mysql统计每类图书的价格总和怎么算selecti.uid,sum(ifnull(deposit,0) ifnull(ddeposit,0) ifnull(money,0))asallmoney
frompw_memberinfoileftjoinpw_membersmonm.uid=i.uidleftjoinpw_memberdatadoni.uid=d.uid
whereifnull(deposit,0) ifnull(ddeposit,0) ifnull(money,0)2000;
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