sql - 如何使用 SQL 创建多个存储过程

Question

我有一个 vb.net 函数，它根据传递给函数的参数创建多个存储过程。

我想将此 vb.Net 移动到单个 SQL 文件中(出于维护原因)，但我不确定如何在不创建 7 个单独的存储过程的情况下在 SQL 中重新创建它。

我总共创建了 20 个存储过程，我真的不想在 SQL 文件中创建这么多，因为维护将是一场噩梦。我想知道是否有类似于我在下面的 VB.Net 中所做的解决方案:

Private Sub CreateStoredProcedures()

        CreateSP("SummaryNone", "YEAR([sale].[DateTime])")
        CreateSP("SummaryUser", "[sale].[User]")
        CreateSP("Summarysale", "[sale].[sale]")
        CreateSP("SummaryBatch", "[sale].[Batch]")
        CreateSP("SummaryDay", "dbo.FormatDateTime([sale].[DateTime], 'yyyy-mm-dd')")
        CreateSP("SummaryMonth", "dbo.FormatDateTime(dbo.DateSerial(YEAR([sale].[DateTime]), MONTH([sale].[DateTime]), 1), 'yyyy-mm-dd')")
        CreateSP("SummaryYear", "Year([sale].[DateTime])")

        Return
    End Sub


    Private Sub CreateSP(ByVal vName As String, ByVal vGroup As String)

        Dim CommandText As String = _
                        "CREATE PROCEDURE " & vName _
                        & " @StartDate varchar(50)," _
                        & " @EndDate varchar(50)" _
                        & " AS " _
                        & " SELECT " & vGroup & "                   AS GroupField," _
                        & " Sum([Project].[NumProject])                AS TotalProject," _
                        & " Sum([Project].[Title])                  AS SumTitle," _
                        & " Sum([Project].[Duration])               AS SumDuration," _
                        & " Sum([Project].[Info])                AS SumInfo," _
                        & " Sum([Customer].[NumCustomer]) AS TotalNumCustomer," _
                        & " Sum([Orders].[NumOrders])   AS TotalNumOrders," _
                        & " Sum([OrderInspection].[NumInspects])          AS TotalNumInspects," _
                        & " Sum([OrderInspection].[NumFails])             AS TotalNumFails," _
                        & " Sum([CustomerInspection].[NumInspects])    AS TotalNumCustomerInspectionInspects," _
                        & " Sum([CustomerInspection].[NumFails])       AS TotalNumCustomerInspectionFails," _
                        & " Sum([Measurements].[NumMeasurements]) AS TotalNumMeasurementss" _
                        & " FROM ((((((sale LEFT JOIN Project   ON [sale].[saleId]=[Project].[saleId])" _
                            & " LEFT JOIN Customer   ON [Project].[PrintId]=[Customer].[PrintId])" _
                            & " LEFT JOIN Orders    ON [Project].[PrintId]=[Orders].[PrintId])" _
                            & " LEFT JOIN OrderInspection       ON [Project].[PrintId]=[OrderInspection].[PrintId])" _
                            & " LEFT JOIN CustomerInspection ON [Project].[PrintId]=[CustomerInspection].[PrintId])" _
                            & " LEFT JOIN Measurements ON [Project].[PrintId]=[Measurements].[PrintId])" _
                        & " WHERE [sale].[DateTime] BETWEEN dbo.FormatDateTime((@StartDate), 'yyyy-mm-dd')" _
                        & " AND dbo.FormatDateTime((@Enddate),'yyyy-mm-dd')" _
                        & " GROUP BY " & vGroup & "" _
                        & " ORDER BY " & vGroup & ";"

        SqlExecuteNonQuery(CommandText)

        return
    End Sub

期待您的评论和回复。

谢谢

Answer 1

您可以将模板存储在文本文件中，作为 .NET DLL 中的嵌入式资源。为您的动态位设置一些占位符。这将使您当前的解决方案更易于维护。然后从 DLL 加载流并保留当前的实现。

编辑文本文件比嵌入在 C# 文件中的大块 SQL 更容易。

如果将其移至单个过程，您可能会受到性能影响，您可能对此感到满意，但请记住，该过程也会有一些维护问题。我们通常喜欢避免存储过程中的动态 SQL。 7 路 IF 分支是维护的噩梦。