Question

当我运行此代码时

UPDATE #YesterdayAssignments
SET ThisWeek = (
                SELECT COUNT(*)
                FROM #YesterdayAssignments U
    INNER JOIN vstudyassignments A
        ON U.HHID = A.lhouseholdid
    INNER JOIN tstudies S
        ON S.lstudyid = A.lstudyid
WHERE S.lstudytypeid IN (0,1,2) 
  AND S.bafteruse <> 1 
  AND S.lstatusid = 1 
  AND (A.dmailingdate BETWEEN DATEADD(DAY,1-DATEPART(dw,GETDATE()),GETDATE()) AND GETDATE() 
        OR A.dPulledDate BETWEEN DATEADD(DAY,1-DATEPART(dw,GETDATE()),GETDATE()) AND GETDATE())
  AND S.dMailingDate < GETDATE()
                GROUP BY HHID
                ) 
FROM #YesterdayAssignments U
    INNER JOIN vstudyassignments A
        ON U.HHID = A.lhouseholdid
    INNER JOIN tstudies S
        ON S.lstudyid = A.lstudyid
WHERE S.lstudytypeid IN (0,1,2) 
  AND S.bafteruse <> 1 
  AND S.lstatusid = 1 
  AND (A.dmailingdate BETWEEN DATEADD(DAY,1-DATEPART(dw,GETDATE()),GETDATE()) AND GETDATE() 
        OR A.dPulledDate BETWEEN DATEADD(DAY,1-DATEPART(dw,GETDATE()),GETDATE()) AND GETDATE())
  AND S.dMailingDate < GETDATE()
  AND HHID = U.HHID

我收到了错误;

Msg 512, Level 16, State 1, Line 1

子查询返回的值超过1。当子查询遵循=，！=，＆lt;，＆lt; =，＆gt;，＆gt; =或子查询用作表达式时，不允许这样做。声明已经终止。

我需要更新一个包含多个值的表。有什么想法吗？

Answer 1

我认为查询没有按照您的想法进行。试试这个（徒手）：

WITH data (Total, HHID) AS
(
    SELECT  COUNT(*),
            HHID
    FROM    #YesterdayAssignments U
            INNER JOIN vstudyassignments A ON U.HHID = A.lhouseholdid
            INNER JOIN tstudies S ON S.lstudyid = A.lstudyid
    WHERE   S.lstudytypeid IN (0,1,2) 
            AND S.bafteruse <> 1 
            AND S.lstatusid = 1 
            AND (A.dmailingdate BETWEEN DATEADD(DAY,1-DATEPART(dw,GETDATE()),GETDATE()) AND GETDATE() 
                OR A.dPulledDate BETWEEN DATEADD(DAY,1-DATEPART(dw,GETDATE()),GETDATE()) AND GETDATE())
            AND S.dMailingDate < GETDATE()
    GROUP BY HHID
)
UPDATE  U
SET     ThisWeek = Total
FROM    #YesterdayAssignments U
        INNER JOIN data D ON D.HHID = U.HHID;

你拥有它的方式，你正在对HHID进行分组，哪个潜在的返回多个计数（当有多个HHID时）。所以实际上，您正在尝试：ThisWeek = val1, val2, ..., valN。

使用多个值更新表

1 个答案: