Question

运行sql server后会显示此错误

子查询返回的值超过1。这是不允许的子查询跟随=，！=，＆lt;，＆lt; =，＆gt;，＆gt; =或当子查询用作表达。

以下是我的存储过程的脚本

SELECT
  (SELECT SUM(GrossSales)
   FROM cssale
   WHERE EndDate BETWEEN @StartDate AND @EndDate
     AND CashierID = @Employee) AS [Total Sales],

  (SELECT SUM(GrossSales)
   FROM CSSale
   WHERE RefundStoreDate BETWEEN @StartDate AND @EndDate
     AND CashierID = @Employee) AS [Refunds],

  (SELECT SUM(GrossSales)
   FROM CSSale
   WHERE DateVoided BETWEEN @StartDate AND @EndDate
     AND CashierID = @Employee) AS [Voided Items],

  ( SELECT sum(isnull(C.Amount,0)) AS [Discount Amount]
   FROM CSSaleItem B
   LEFT JOIN CSSaleItemDiscount C ON B.CSSaleItemID = C.CSSaleItemID
   LEFT JOIN CSSale A ON A.CSSaleID = B.CSSaleID
   LEFT JOIN CSSaleItemTax D ON B.CSSaleItemID = D.CSSaleItemID
   LEFT JOIN
     (SELECT CSSaleItemID,
             Amount,
             Tax,
             [Type]
      FROM CSSaleItemTax
      WHERE [Type] = 0) AS vsa ON vsa.CSSaleItemID = B.CSSaleItemID
   WHERE A.EndDate BETWEEN @StartDate AND @EndDate
     AND A.CashierID = @Employee) AS [Discount],

  (SELECT CashierId
   FROM cssale
   WHERE EndDate BETWEEN @StartDate AND @EndDate
     AND CashierID = @Employee)AS [Cashier]

Answer 1

子查询只能返回一个值。在你的代码下面，行可能是罪魁祸首..

  (SELECT CashierId
   FROM cssale
   WHERE EndDate BETWEEN @StartDate AND @EndDate
     AND CashierID = @Employee)AS [Cashier]

如果要返回所有返回的行或使用top 1限制为仅一行，则可以使用交叉申请/外部申请

Answer 2

您的问题是（如错误所述），您的子查询返回多个值。就像你试图将一个表的完整列写入一个单元格一样。

尝试使用JOINS而不是此子查询来解决此查询。

Answer 3

如果员工在给定期间内进行多次销售，则下面的代码将返回多行。

(SELECT CashierId
   FROM cssale
   WHERE EndDate BETWEEN @StartDate AND @EndDate
     AND CashierID = @Employee)AS [Cashier]

而不是使用跨国表（cssales）;尝试使用具有Employee到Cashier映射的主/域表。这样每次都会产生独特的行。

存储过程：子查询返回的值超过1

3 个答案: