参数化动态 TSQL - 动态参数

我们有一种情况，不同的客户实际上要求相同的报告，但他们：

1. 不想要所有的列
2. 希望列的顺序与我们自然拥有的顺序不同
3. 希望它们被称为不同于我们存储方式的名称（例如“客户编号”与“客户编号”）

目的是减轻适应这些定制请求所需的工作量。我们目前处于这些基本相同报告的数百个实例的位置（不包括这些表面差异）。我想看看我是否需要Dynamic每组这些基本查询的一个实例，Parameter或者我是否可以parameter通过 1 处理所有可能的集合Stored Procedure。希望也不必拥有一堆特定SSRS RDL文件或SSIS DTSX包的特定实例来处理这些更改。数据将来自Stored Procedure我们需要显示/呈现的数据。

让我们假设我构建了一个Dynamic SQL Command输出看起来像这样的地方：

SELECT
Col1 AS 'Alias1',
Col2 AS 'Alias2',
Col3 AS 'Alias3'
FROM View
WHERE DateCol >= @StartDate
AND DateCol < @EndDate

它是由几个不同的部分使用几个表构建的。下面的表结构是更多的伪代码来理解这些想法，所以请忽略诸如没有声明主键之类的东西......

CREATE TABLE [report].[ReportTemplate]
(
    ID INT NOT NULL, --(Primary Key)
    ReportName VarChar(100) NOT NULL,
    ReportTypeID INT NOT NULL --(FK To report.ReportTemplateType.ID)
)

CREATE TABLE [report].[ReportTemplateType]
(
    ID INT NOT NULL, --(Primary Key)
    Name VarChar(50), --(Unique Constraint)
    BaseCommand VarChar(2000), --Holds FROM and JOIN clauses
    WhereCommand VarChar(2000), --Holds WHERE Clause
    WhereCommandParameters VarChar(2000), --Holds declaration of the parameters
)

CREATE TABLE [report].[ReportTemplateColumnDetails]
(
    ID INT NOT NULL, --(Primary Key)
    ReportTemplateID INT NOT NULL, --(FK to report.ReportTemplate.ID)
    ColumnName VarChar(256) NOT NULL,
    ColumnAlias VarChar(256) NULL, --Have logic handle blank vs NULL values
    ColumnOrder SmallInt NOT NULL
)

+----+-------------------+--------------+
| ID |    ReportName     | ReportTypeID |
+----+-------------------+--------------+
|  1 | Customer 1 Status |            1 |
|  2 | Customer 1 Sales  |            2 |
+----+-------------------+--------------+


+----+--------+-----------------+------------------------------------------------------------------------------+-------------------------------------------------------------------+
| ID |  Name  |   BaseCommand   |                                WhereCondition                                |                     WhereConditionParameters                      |
+----+--------+-----------------+------------------------------------------------------------------------------+-------------------------------------------------------------------+
|  1 | Status | FROM StatusView | WHERE DateCol >= @StartDate AND DateCol < @EndDate                           | @StartDate DATEIME, @EndDate DateTime                             |
|  2 | Sales  | FROM SalesView  | WHERE DateCol >= @StartDate AND DateCol < @EndDate AND Col4 = @TypeParameter | @StartDate DATEIME, @EndDate DateTime, @TypeParameter VarChar(20) |
+----+--------+-----------------+------------------------------------------------------------------------------+-------------------------------------------------------------------+

+----+------------------+------------+-------------+-------------+
| ID | ReportTemplateID | ColumnName | ColumnAlias | ColumnOrder |
+----+------------------+------------+-------------+-------------+
|  1 |                1 | Col1       | Alias1      |           1 |
|  2 |                1 | Col2       | Alias2      |           2 |
|  3 |                1 | Col3       | Alias3      |           3 |
|  4 |                2 | Col4       | Alias1      |           1 |
|  5 |                2 | Col5       | Alias2      |           2 |
|  6 |                2 | Col6       | Alias3      |           3 |
+----+------------------+------------+-------------+-------------+

该命令是使用以下代码构建的：

CREATE PROCEDURE [report].[ExecuteReportTemplate] (@ReportName VarChar(50))
AS
BEGIN
    DECLARE @SQLCommand VarChar(MAX) = 'SELECT ',
            @FirstColumnAdded BIT = 0,
            @BaseCommand VarChar(2000),
            @WhereCondition VarChar(2000),
            @WhereConditionParameters VarChar(2000)

    SELECT @BaseCommand = RTT.BaseCommand,
    @WhereCondition = RTT.WhereCommand, 
    @WhereConditionParameters = RTT.WhereCommandParameters 
    FROM [report].[ReportTemplateType] RTT
        INNER JOIN [report].[ReportTemplate] RT
            ON RTT.ID = RT.ReportTypeID
    WHERE RT.Name = @ReportName

    DECLARE @ColumnName VarChar(256),
            @ColumnAlias VarChar(256)

    DECLARE ColumnCursor CURSOR FOR
    SELECT ColumnName,
    ColumnAlias
    FROM [report].[ReportTemplateColumnDetails]
    ORDER BY ColumnOrder

    FETCH NEXT FROM ColumnCursor INTO @ColumnName, @ColumnAlias

    WHILE (@@FETCH_STATUS = 0)
    BEGIN
        --Add a comma inbetween columns, does not happen on the first one
        IF(@FirstColumnAdded = 1)
        BEGIN
            SET @SQLCommand = @SQLCommand + ', '
        END
        ELSE
        BEGIN
            SET @FirstColumnAdded = 1
        END

        --Adds the column into the list
        SET @SQLCommand = @SQLCommand + @ColumnName

        --If we have been provided an alias, set the alias
        IF(@ColumnAlias IS NULL OR LTRIM(RTRIM(@ColumnAlias)) = '')
        BEGIN
            @SQLCommand = @SQLCommand + 'AS ''' + @ColumnAlias + ''' '
        END
    END

    CLOSE ColumnCursor
    DEALLOCATE ColumnCursor

    --Now Add The Base Command
    SELECT @SQLCommand = @SQLCommand + ' ' + @BaseCommand + ' ' + @WhereCommand

    EXECUTE sp_executesql @sqlCommand, @WhereConditionParameters
        @StartDate = '2019-01-01', 
        @EndDate = GETDATE()
END

有没有办法动态更改配置和传入的参数而无需构建单独的命令？

我希望能够用不同的and填充[report].[ReportTemplateType].[WhereCondition]and 。例如在类似的东西中添加第三个。我知道解决这个问题的唯一方法是创建一个不同的地方，其中所有内容都与上述相同，但我们会将最后一块更改为：[report].[ReportTemplateType].[WhereCondition]WHEREParameterscolumnWHERE conditionCol4 = @TypeParameterStored ProcedureStored Procedure

EXECUTE sp_executesql @sqlCommand, @WhereConditionParameters
        @StartDate = '2019-01-01', 
        @EndDate = GETDATE(),
        @TypeParameter = 'SomeStringValue'

有没有办法动态更改配置和传入的参数而无需构建单独的命令？