Question

我有一个像这样的SQL查询：

SELECT (SUM(DURATIONSECS) / 3600.00) AS LaborHrs, 
(SELECT LABORLEV2 t2 FROM LABOR WHERE LABORID = t1.LABORID) As Dept
FROM Table1 t1 
WHERE DTM BETWEEN 'datetime1' AND 'datetime2' AND 
(SELECT LABORLEV1 FROM LABOR WHERE LABORID = t1.LABORID) = '100' 
AND PAYCODEID='1'
Group BY LABORID

这给了我正确的数据：

LaborHrs        Dept
90.5000000      office
1033.2500000    retail
522.2500000     retail
217.5000000     misc
1145.5000000    misc
40.0000000      retail

但是，如果dept名称相同，我需要汇总结果，例如我需要将“retail”和“misc”的所有工时的总和放在同一列中。我尝试过Dept的分组，但它没有识别出列名。

Answer 1

我根据我对你的问题的理解重写了你的查询，但我对这一部分非常怀疑：

DTM BETWEEN 'datetime1' AND 'datetime2'

我认为它是您要替换的日期时间变量或数字。如果是这种情况，我猜这里可能就是答案。

SELECT (SUM(DURATIONSECS) / 3600.00) AS LaborHrs, 
    , l1.LABORLEV2 AS Dept
FROM Table1 t1 
    JOIN LABOR l1 ON l1 ON l1.LABORID=t1.LABORID
WHERE DTM BETWEEN 'datetime1' AND 'datetime2' AND l1.LABORLEV1='100'
    AND t1.PAYCODEID='1'
Group BY t1.LABORID, l1.LABORLEV2

Answer 2

如果要对某些列进行分组，则该列不能是子选择，因此您必须使用JOINS重写查询。

通过我对您的查询的理解，您可以加入表Tabl1和LABOR并将您的条件移动到单个WHERE语句，如下所示：

SELECT 
    l.LABORLEV2 AS Dept,
    (SUM(t1.DURATIONSECS) / 3600.00) AS LaborHrs
FROM Table1 t
INNER JOIN LABOR l ON t.LABORID=l.LABORID
WHERE 
    l.LABORLEV1='100' AND
    t1.PAYCODEID='1' AND
    t1.DTM BETWEEN 'datetime1' AND 'datetime2'
GROUP BY l.LABORLEV2

如何根据子查询结果聚合数据

2 个答案: