具有嵌套 CASES 的 Sql 标量值函数

Posted 2023-04-13

【中文标题】具有嵌套 CASES 的 Sql 标量值函数

【英文标题】：Sql Scalar valued Function with nested CASES

【发布时间】：2016-09-08 16:22:04

【问题描述】：

我需要帮助来更正下面的语法，嵌套的 case 包含将值返回给在另一个 CASE 中评估的变量的函数。

    CREATE FUNCTION dbo.EpsClassificacaoConjunto (@Bloco varchar(5), @Sub varchar(5), @SSub varchar(5))
RETURNS varchar(5)
  AS
  BEGIN
    DECLARE @Comprimento float = CASE WHEN @Sub is null AND @SSub not null then SELECT dbo.EpsComprimentoSub(DimensaoDePerfil) FROM VShiAssemblyBom WHERE Bloco=@Bloco AND Submontagem is null AND Subsubmontagem=@SSub AND Tipo='SET'
                                      WHEN @SSub is null and @Sub not null then SELECT dbo.EpsComprimentoSub(DimensaoDePerfil) FROM VShiAssemblyBom WHERE Bloco=@Bloco AND Submontagem=@Sub AND Subsubmontagem is null AND Tipo='SET'
                                      ELSE SELECT dbo.EpsComprimentoSub(DimensaoDePerfil) FROM VShiAssemblyBom WHERE Bloco=@Bloco AND Submontagem=@Sub AND Subsubmontagem=@SSub AND Tipo='SET' END;

    DECLARE @Largura float = CASE WHEN @Sub is null AND @SSub not null then SELECT dbo.EpsLarguraSub(DimensaoDePerfil) FROM VShiAssemblyBom WHERE Bloco=@Bloco AND Submontagem is null AND Subsubmontagem=@SSub AND Tipo='SET'
                                  WHEN @SSub is null and @Sub not null then SELECT dbo.EpsLarguraSub(DimensaoDePerfil) FROM VShiAssemblyBom WHERE Bloco=@Bloco AND Submontagem=@Sub AND Subsubmontagem is null AND Tipo='SET'
                                  ELSE SELECT dbo.EpsLarguraSub(DimensaoDePerfil) FROM VShiAssemblyBom WHERE Bloco=@Bloco AND Submontagem=@Sub AND Subsubmontagem=@SSub AND Tipo='SET' END;

    DECLARE @Altura float = CASE WHEN @Sub is null AND @SSub not null then SELECT dbo.EpsAlturaSub(DimensaoDePerfil) FROM VShiAssemblyBom WHERE Bloco=@Bloco AND Submontagem is null AND Subsubmontagem=@SSub AND Tipo='SET'
                                 WHEN @SSub is null and @Sub not null then SELECT dbo.EpsAlturaSub(DimensaoDePerfil) FROM VShiAssemblyBom WHERE Bloco=@Bloco AND Submontagem=@Sub AND Subsubmontagem is null AND Tipo='SET'
                                 ELSE SELECT dbo.EpsAlturaSub(DimensaoDePerfil) FROM VShiAssemblyBom WHERE Bloco=@Bloco AND Submontagem=@Sub AND Subsubmontagem=@SSub AND Tipo='SET' END;


    DECLARE @Peso float = CASE WHEN @Sub is null and @SSub is not null then SELECT Peso FROM VShiAssemblyBom WHERE Bloco=@Bloco AND Submontagem is null AND Subsubmontagem=@SSub AND Tipo='SET'
                               WHEN @Sub not null and @SSub is null then SELECT Peso FROM VShiAssemblyBom WHERE Bloco=@Bloco AND Submontagem=@Sub AND Subsubmontagem is null AND Tipo='SET'
                               ELSE SELECT Peso FROM VShiAssemblyBom WHERE Bloco=@Bloco AND Submontagem=@Sub AND Subsubmontagem=@SSub AND Tipo='SET' END;

    DECLARE @Pagamento varchar(2) = CASE WHEN @Sub is null and @SSub not null then SELECT TOP 1 CodigoDeFabricacao FROM VShiAssemblyBom WHERE Bloco=@Bloco AND Submontagem is null AND Subsubmontagem=@SSub AND Tipo='SET'
                                         WHEN @Sub not null and @SSub is null then SELECT TOP 1 CodigoDeFabricacao FROM VShiAssemblyBom WHERE Bloco=@Bloco AND Submontagem=@Sub AND Subsubmontagem is null AND Tipo='SET'
                                         ELSE SELECT TOP 1 CodigoDeFabricacao FROM VShiAssemblyBom WHERE Bloco=@Bloco AND Submontagem=@Sub AND Subsubmontagem=@SSub AND Tipo='SET' END;

    DECLARE @Fabricacao varchar(2) = CASE WHEN @Sub is null and @SSub not null then SELECT TOP 1 CodigoDeFabricacao FROM VShiPartBom WHERE Bloco=@Bloco AND Submontagem is null AND Subsubmontagem=@SSub AND Tipo='SET'
                                          WHEN @Sub not null and @SSub is null then SELECT TOP 1 CodigoDeFabricacao FROM VShiPartBom WHERE Bloco=@Bloco AND Submontagem=@Sub AND Subsubmontagem is null AND Tipo='SET'
                                          ELSE SELECT TOP 1 CodigoDeFabricacao FROM VShiPartBom WHERE Bloco=@Bloco AND Submontagem=@Sub AND Subsubmontagem=@SSub AND Tipo='SET' END;

    RETURN CASE WHEN @Peso<5000 AND @Largura<2500 AND @Altura<4000 AND @Comprimento<10000 THEN '1-B'
                WHEN @Peso<5000 AND @Largura<5000 AND @Altura<4000 AND @Comprimento<10000 THEN '1-A'
                WHEN @Peso<10000 AND @Largura<10000 AND @Altura<4000 AND @Comprimento<10000 THEN '2'
                WHEN @Peso<5000 AND @Largura<2500 AND @Altura<4000 AND @Comprimento>=10000 AND @Comprimento<15000 THEN '3'
                ELSE 'ESP' END

  END
GO

逻辑部分已经描述过了，但是，我的sql语法似乎有问题，请指教...

【问题讨论】：

您是否仔细阅读了错误消息并尝试找到它们？

这是错误：'1 文本中有错误或对象的类型与此文档不对应。 ...'

你用的是什么关系型数据库？

MSSQL 2008 版本

当你在 SSMS 中解析这个查询时，你会得到特定行的特定错误。

【参考方案1】：

我在 MS SQL Server Management Studio 中对其进行了调试，并且运行良好：

    CREATE FUNCTION EpsClassificacaoConjunto 
(
    -- Add the parameters for the function here
    @Bloco varchar(5),
    @Sub varchar(5),
    @SSub varchar(5)
)
RETURNS varchar(5)
AS
BEGIN
    -- Declare the return variable here
    DECLARE @Result varchar(5)
    DECLARE @Comprimento float;
    DECLARE @Largura float;
    DECLARE @Altura float;
    DECLARE @Peso float;
    DECLARE @Pagamento varchar(2);
    DECLARE @Fabricacao varchar(2);

    -- Add the T-SQL statements to compute the return value here
    SELECT @Comprimento =  CASE WHEN (@Sub is null AND @SSub is not null) then (SELECT dbo.EpsComprimentoSub(DimensaoDePerfil) FROM VShiAssemblyBom WHERE Bloco=@Bloco AND Submontagem is null AND Subsubmontagem=@SSub AND Tipo='SET')
                                WHEN (@SSub is null and @Sub is not null) then (SELECT dbo.EpsComprimentoSub(DimensaoDePerfil) FROM VShiAssemblyBom WHERE Bloco=@Bloco AND Submontagem=@Sub AND Subsubmontagem is null AND Tipo='SET')
                                ELSE (SELECT dbo.EpsComprimentoSub(DimensaoDePerfil) FROM VShiAssemblyBom WHERE Bloco=@Bloco AND Submontagem=@Sub AND Subsubmontagem=@SSub AND Tipo='SET') END;

    SELECT @Largura = CASE WHEN (@Sub is null AND @SSub is not null) then (SELECT dbo.EpsLarguraSub(DimensaoDePerfil) FROM VShiAssemblyBom WHERE Bloco=@Bloco AND Submontagem is null AND Subsubmontagem=@SSub AND Tipo='SET')
                            WHEN (@SSub is null and @Sub is not null) then (SELECT dbo.EpsLarguraSub(DimensaoDePerfil) FROM VShiAssemblyBom WHERE Bloco=@Bloco AND Submontagem=@Sub AND Subsubmontagem is null AND Tipo='SET')
                            ELSE (SELECT dbo.EpsLarguraSub(DimensaoDePerfil) FROM VShiAssemblyBom WHERE Bloco=@Bloco AND Submontagem=@Sub AND Subsubmontagem=@SSub AND Tipo='SET') END;


      SELECT @Altura = CASE WHEN (@Sub is null AND @SSub is not null) then (SELECT dbo.EpsAlturaSub(DimensaoDePerfil) FROM VShiAssemblyBom WHERE Bloco=@Bloco AND Submontagem is null AND Subsubmontagem=@SSub AND Tipo='SET')
                                 WHEN (@SSub is null and @Sub is not null) then (SELECT dbo.EpsAlturaSub(DimensaoDePerfil) FROM VShiAssemblyBom WHERE Bloco=@Bloco AND Submontagem=@Sub AND Subsubmontagem is null AND Tipo='SET')
                                 ELSE (SELECT dbo.EpsAlturaSub(DimensaoDePerfil) FROM VShiAssemblyBom WHERE Bloco=@Bloco AND Submontagem=@Sub AND Subsubmontagem=@SSub AND Tipo='SET') END;



      SELECT @Peso = CASE WHEN (@Sub is null and @SSub is not null) then (SELECT Peso FROM VShiAssemblyBom WHERE Bloco=@Bloco AND Submontagem is null AND Subsubmontagem=@SSub AND Tipo='SET')
                               WHEN (@Sub is not null and @SSub is null) then (SELECT Peso FROM VShiAssemblyBom WHERE Bloco=@Bloco AND Submontagem=@Sub AND Subsubmontagem is null AND Tipo='SET')
                               ELSE (SELECT Peso FROM VShiAssemblyBom WHERE Bloco=@Bloco AND Submontagem=@Sub AND Subsubmontagem=@SSub AND Tipo='SET') END;


      SELECT @Pagamento = CASE WHEN (@Sub is null and @SSub is not null) then (SELECT TOP 1 CodigoDeFabricacao FROM VShiAssemblyBom WHERE Bloco=@Bloco AND Submontagem is null AND Subsubmontagem=@SSub AND Tipo='SET')
                                         WHEN (@Sub is not null and @SSub is null) then (SELECT TOP 1 CodigoDeFabricacao FROM VShiAssemblyBom WHERE Bloco=@Bloco AND Submontagem=@Sub AND Subsubmontagem is null AND Tipo='SET')
                                         ELSE (SELECT TOP 1 CodigoDeFabricacao FROM VShiAssemblyBom WHERE Bloco=@Bloco AND Submontagem=@Sub AND Subsubmontagem=@SSub AND Tipo='SET') END;


      SELECT @Fabricacao = CASE WHEN (@Sub is null and @SSub is not null) then (SELECT TOP 1 CodigoDeFabricacao FROM VShiPartBom WHERE [Bloco Orig.]=@Bloco AND Submontagem is null AND Subsubmontagem=@SSub AND Tipo='SET')
                                          WHEN (@Sub is not null and @SSub is null) then (SELECT TOP 1 CodigoDeFabricacao FROM VShiPartBom WHERE [Bloco Orig.]=@Bloco AND Submontagem=@Sub AND Subsubmontagem is null AND Tipo='SET')
                                          ELSE (SELECT TOP 1 CodigoDeFabricacao FROM VShiPartBom WHERE [Bloco Orig.]=@Bloco AND Submontagem=@Sub AND Subsubmontagem=@SSub AND Tipo='SET') END;

    SELECT @Result = CASE WHEN @Peso<5000 AND @Largura<2500 AND @Altura<4000 AND @Comprimento<10000 THEN '1-B'
                            WHEN @Peso<5000 AND @Largura<5000 AND @Altura<4000 AND @Comprimento<10000 THEN '1-A'
                            WHEN @Peso<10000 AND @Largura<10000 AND @Altura<4000 AND @Comprimento<10000 THEN '2'
                            WHEN @Peso<5000 AND @Largura<2500 AND @Altura<4000 AND @Comprimento>=10000 AND @Comprimento<15000 THEN '3'
                            ELSE 'ESP' END

    -- Return the result of the function
    RETURN @Result

END
GO