Question

在下表中，我尝试计算在给定日期范围内CustomerID和User组合出现多次的记录总数。

/*
SQLyog Community v12.12 (64 bit)
MySQL - 5.5.40-MariaDB 
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*/
/*!40101 SET NAMES utf8 */;

create table `VWAE` (
    `CustomerID` mediumint (6),
    `User` int (11),
    `DemoOrderDate` date 
); 
insert into `VWAE` (`CustomerID`, `User`, `DemoOrderDate`) values('135068','1210','2015-05-27');
insert into `VWAE` (`CustomerID`, `User`, `DemoOrderDate`) values('153305','1210','2015-06-03');
insert into `VWAE` (`CustomerID`, `User`, `DemoOrderDate`) values('152566','1210','2015-06-04');
insert into `VWAE` (`CustomerID`, `User`, `DemoOrderDate`) values('152566','1210','2015-06-05');
insert into `VWAE` (`CustomerID`, `User`, `DemoOrderDate`) values('153896','1210','2015-06-05');
insert into `VWAE` (`CustomerID`, `User`, `DemoOrderDate`) values('153041','1210','2015-06-08');
insert into `VWAE` (`CustomerID`, `User`, `DemoOrderDate`) values('152566','1210','2015-06-08');
insert into `VWAE` (`CustomerID`, `User`, `DemoOrderDate`) values('137405','1210','2015-06-11');
insert into `VWAE` (`CustomerID`, `User`, `DemoOrderDate`) values('149813','1210','2015-06-15');
insert into `VWAE` (`CustomerID`, `User`, `DemoOrderDate`) values('149813','1210','2015-06-16');
insert into `VWAE` (`CustomerID`, `User`, `DemoOrderDate`) values('153698','1210','2015-06-17');
insert into `VWAE` (`CustomerID`, `User`, `DemoOrderDate`) values('153698','1210','2015-06-19');
insert into `VWAE` (`CustomerID`, `User`, `DemoOrderDate`) values('153698','1210','2015-06-22');
insert into `VWAE` (`CustomerID`, `User`, `DemoOrderDate`) values('149813','1210','2015-06-22');
insert into `VWAE` (`CustomerID`, `User`, `DemoOrderDate`) values('150919','1210','2015-06-23');
insert into `VWAE` (`CustomerID`, `User`, `DemoOrderDate`) values('153698','1210','2015-06-23');
insert into `VWAE` (`CustomerID`, `User`, `DemoOrderDate`) values('149813','1210','2015-06-26');


SELECT count(*)
FROM VWAE
WHERE `User` = 1210
AND DemoOrderDate BETWEEN '2015-06-19' AND '2015-06-26'
GROUP BY CustomerID, `User`
HAVING COUNT(*) > 1

查询返回以下两行，这些行无论如何都是正确的。

CustomerID  User  DemoOrderDate  
149813      1210  2015-06-22     
153698      1210  2015-06-19

但是，我在计算返回的数字或记录后，而不是获取实际的行。如何实现这一目标？

仅为记录，上述查询是一个更大查询的子查询，其中我计算各种数据的总数。我已经尝试使用上面的查询来创建派生表t1，然后对它的行执行计数，但在我的实际查询中，WHERE User = 1210子句实际上是引用了范围之外的别名子查询，导致出现以下错误：

Error Code: 1054
Unknown column 'PRF.user_id' in 'where clause'

如何将行计数作为结果而不是实际记录？

0 个答案: