Question

我有一个临时表，需要为不同的客户报告导出字段。该表用作接口：客户端删除并添加字段，我们相应地生成报告。为了便于导出，我们使用以下代码段：

-- Compile select list
select top 1
    stuff((
        select ',' + 'cast([' + Column + '] as nvarchar(max)) as ' + Column
        from #report_fields a
        where a.FieldType like 'X' or a.FieldType like 'Y'
        for XML path('')
     ),1,1,'') as document_fields
from #report_fields a
;

这会产生一个类似

的列表

cast([Field1] as nvarchar(max)) as Field1,
cast([Field2] as nvarchar(max)) as Field2,
cast([Field3] as nvarchar(max)) as Field3,
...
cast([FieldN] as nvarchar(max)) as FieldN

在

等查询中使用

select
    cast([Field1] as nvarchar(max)) as Field1,
    cast([Field2] as nvarchar(max)) as Field2,
    cast([Field3] as nvarchar(max)) as Field3,
    ...
    cast([FieldN] as nvarchar(max)) as FieldN
into
    #client_fields_temp
from
    dbo.ClientData

我在整个剧本中都这样做。但是，它需要手动运行第一个查询并将结果（字段列表）复制粘贴到第二个查询中。我想自动化这个。是否可以将fieldist存储在变量中并使用以下内容：

-- Compile select list
@fieldlist = select top 1
    stuff((
        select ',' + 'cast([' + Column + '] as nvarchar(max)) as ' + Column
        from #report_fields a
        where a.FieldType like 'X' or a.FieldType like 'Y'
        for XML path('')
     ),1,1,'') as document_fields
from #report_fields a
;

select
    @fieldlist
into
    #client_fields_temp
from
    dbo.ClientData

非常感谢任何帮助！

我可以将字段列表存储在变量中以便在其他查询中使用吗？

0 个答案: