Sql server 如何根据子查询结果聚合数据

我有这样一个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

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

这为我提供了如下正确数据：

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

---

但是，如果部门名称相同，我需要汇总结果，例如，我需要将“零售”和“杂项”的所有工时总和放在同一列中。我尝试过按部门分组，但它没有识别出该列名。

我根据对您问题的理解重新编写了您的查询，但我对这一部分非常怀疑：

DTM BETWEEN 'datetime1' AND 'datetime2'

我假设它是一个datetime变量或数字，您可以在中替换它。 如果是这样的话，我想这里可能是答案

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

---

根据我对你问题的理解，我重写了你的问题，但我对这一部分相当怀疑：

DTM BETWEEN 'datetime1' AND 'datetime2'

我假设它是一个datetime变量或数字，您可以在中替换它。 如果是这样的话，我想这里可能是答案

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

---

如果要对某些列进行分组，则该列不能是子选择，因此必须使用联接重写查询

根据我对您的查询的了解，您可以连接表Tabl1和人工，并将您的条件移动到一个WHERE语句，如下所示：

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

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

---

如果要对某些列进行分组，则该列不能是子选择，因此必须使用联接重写查询

根据我对您的查询的了解，您可以连接表Tabl1和人工，并将您的条件移动到一个WHERE语句，如下所示：

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

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

---

GROUP BY仅在您选择的列已通过FROM子句可用时起作用，因此您需要将其加入。GROUP BY仅在您选择的列已通过FROM子句可用时起作用，因此您需要将其加入。抱歉，我应该指定我刚刚将datetime值更改为datetime1和datetime2。谢谢，我唯一需要更改的是Group BY子句中的l1.LABORLEV2到PAYCODEID。我应该指定我刚刚将datetime值更改为datetime1和datetime2。谢谢，我唯一需要更改的是Group BY子句中的l1.LABORLEV2到PAYCODEID