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SQL是新手，经验丰富的VBA-er需要一些帮助。SQL Server：在功能中使用案例
我有一个查看交易，需要获得特定类型的不同费用。费用列表中需要一些字段，其他字段可能为NULL。通过这种方式，我们可以设置一般收费结构，并仍然允许特定的特殊功能。
我现在的目标是找到最佳匹配费用。这是费：
- 匹配所有要求的标准，
- 匹配所有可选的标准或者已经
NULL对他们来说， - 拥有的是通过1和2 所有费用最匹配的可选条件
现在我得到了这个代码的工作版本，但作为一个PROCEDURE。然而，因为我需要这个在视图中使用，我不能使用该版本，并且在函数中没有允许临时表）。
寻找在这个论坛和其他人后，我来到了一个结果仍然给2个错误：
1的ErrorMessage：近'@tblTEMP'不正确的语法，
2的ErrorMessage：近'BEGIN'不正确的语法。
我当前的脚本如下（使用本地变量表）：
ALTER FUNCTION [dbo].[fnStandardFeeBAK]
(@Type_Id BIGINT, @Party_Id BIGINT, @I_A_Id BIGINT, @Grid_Id BIGINT,
@Market_Id BIGINT, @Counterparty_Id BIGINT, @Product_Id BIGINT,
@DealDate DATETIME)
RETURNS TABLE
AS
BEGIN
DECLARE @tblTEMP TABLE (Standard_Fee DECIMAL(38,8), Currency VARCHAR(50),
Unit VARCHAR(50), Unit2 VARCHAR(50), MatchScore BIGINT);
WITH @tblTEMP AS
(SELECT Standard_Fee, V2.Element AS Currency, V1.Element AS Unit,
V2.Element+'/'+V1.Element AS Unit2,
SF.I_A_Id, SF.Grid_Id, SF.Product_Id, SF.Counterparty_Id,
(CASE WHEN SF.I_A_Id = @I_A_Id THEN 1 ELSE 0 END +
CASE WHEN SF.Grid_Id = @Grid_Id THEN 1 ELSE 0 END +
CASE WHEN SF.Product_Id = @Product_Id THEN 1 ELSE 0 END +
CASE WHEN SF.Counterparty_Id = @Counterparty_Id THEN 1 ELSE 0 END)
AS MatchScore
FROM tblStandard_Fee AS SF
LEFT JOIN tblElement AS V1 ON V1.Element_Id = SF.Unit_Id
LEFT JOIN tblElement AS V2 ON V2.Element_Id = SF.Currency_Id
WHERE SF.Type_Id = @Type_Id AND SF.Party_Id = @Party_Id AND
SF.Market_Id = @Market_Id
AND SF.Date_From < @DealDate
AND (SF.Date_To > @DealDate OR SF.Date_To IS NULL)
AND (SF.I_A_Id = @I_A_Id OR SF.I_A_Id IS NULL)
AND (SF.Grid_Id = @Grid_Id OR SF.Grid_Id IS NULL)
AND (SF.Product_Id = @Product_Id OR SF.Product_Id IS NULL)
AND (SF.Counterparty_Id = @Counterparty_Id OR SF.Counterparty_Id IS NULL))
RETURN
SELECT Standard_Fee, Currency, Unit, Unit2
FROM @tblTEMP
WHERE MatchScore= MAX(MatchScore)
END
我希望我的问题是清楚的，如果不是让我知道。
感谢您提出建议，甚至用最后一点来解决我的问题！
因此，所有的LittleBobbyTables的帮助相结合给了我一个工作的最终结果。请不要忘记给他这个信用。
工作代码：
ALTER FUNCTION [dbo].[fnStandardFeeBAK]
(@Type_Id BIGINT, @Party_Id BIGINT, @I_A_Id BIGINT, @Grid_Id BIGINT,
@Market_Id BIGINT, @Counterparty_Id BIGINT, @Product_Id BIGINT, @DealDate DATETIME)
RETURNS @YourTable TABLE
(
-- Columns returned by the function
Standard_Fee DECIMAL(38,8),
Currency VARCHAR(50),
Unit VARCHAR(50),
Unit2 VARCHAR(50)
)
AS
BEGIN
WITH YourCTE(Standard_Fee, Currency, Unit, Unit2, MatchScore) AS
(
SELECT Standard_Fee, V2.Element AS Currency, V1.Element AS Unit,
V2.Element + '/' + V1.Element AS Unit2,
(CASE WHEN SF.I_A_Id = @I_A_Id THEN 1 ELSE 0 END +
CASE WHEN SF.Grid_Id = @Grid_Id THEN 1 ELSE 0 END +
CASE WHEN SF.Product_Id = @Product_Id THEN 1 ELSE 0 END +
CASE WHEN SF.Counterparty_Id = @Counterparty_Id THEN 1 ELSE 0 END)
AS MatchScore
FROM tblStandard_Fee AS SF
LEFT JOIN tblElement AS V1 ON V1.Element_Id = SF.Unit_Id
LEFT JOIN tblElement AS V2 ON V2.Element_Id = SF.Currency_Id
--Type_ID, Party_ID and Market_Id are always present, others can have NULL values
WHERE SF.Type_Id = @Type_Id AND SF.Party_Id = @Party_Id
AND SF.Market_Id = @Market_Id AND SF.Date_From < @DealDate
AND (SF.Date_To > @DealDate OR SF.Date_To IS NULL)
AND (SF.I_A_Id = @I_A_Id OR SF.I_A_Id IS NULL)
AND (SF.Grid_Id = @Grid_Id OR SF.Grid_Id IS NULL)
AND (SF.Product_Id = @Product_Id OR SF.Product_Id IS NULL)
AND (SF.Counterparty_Id = @Counterparty_Id OR SF.Counterparty_Id IS NULL)
GROUP BY Standard_Fee, V1.Element, V2.Element, SF.I_A_Id, SF.Grid_Id, SF.Product_Id, SF.Counterparty_Id
)
INSERT @YourTable
SELECT Standard_Fee, Currency, Unit, Unit2
FROM YourCTE
GROUP BY MatchScore, Standard_Fee, Currency, Unit, Unit2
HAVING MatchScore = (SELECT MAX(MatchScore) FROM YourCTE)
RETURN;
END
我现在看到我有'SF.I_A_Id，SF.Grid_Id，SF.Product_Id，SF.Counterparty_Id，'仍然在我的代码中的第一选择声明。但即使采取这种做法也不会摆脱错误 – 2012-08-08 13:53:26