Sql server 表中的动态SQL值

我现在正在处理一个动态查询，需要表中的值

到目前为止，我的问题是：

DECLARE @query varchar(1500)
SET @query = 
'SELECT Id,'
+ 'SUM(CASE WHEN ['+convert(varchar(50),CAST(myTable.myDate AS date),120)+'] = ['+convert(varchar(50), CAST(GETDATE() AS date), 120)+'] then [Counter] else 0 end) ''0'','
+ 'SUM(CASE WHEN ['+convert(varchar(50),CAST(DATEADD(day, -1, myTable.myDate)), 120)+'] = ['+convert(varchar(50),CAST(DATEADD(day, -1, GETDATE()) AS date), 120)+'] then [counter] else 0 end) ''1'','
+ 'SUM(CASE WHEN ['+convert(varchar(50),CAST(DATEADD(day, -2, myTable.myDate)), 120)+'] = ['+convert(varchar(50),CAST(DATEADD(day, -2, GETDATE()) AS date), 120)+'] then [counter] else 0 end) ''2'','
+ 'SUM(CASE WHEN ['+convert(varchar(50), CAST(DATEADD(day, -3, myTable.myDate)), 120)+'] = ['+convert(varchar(50),CAST(DATEADD(day, -3, GETDATE()) AS date),120)+'] then [counter] else 0 end) ''3'','
+ 'SUM(CASE WHEN ['+convert(varchar(50),CAST(DATEADD(day, -4, myTable.myDate)),120)+'] = ['+convert(varchar(50),CAST(DATEADD(day, -4, GETDATE()) AS date),120)+'] then [counter] else 0 end) ''4'''
+ 'FROM [myTable] GROUP BY Id'
PRINT(@query)
EXEC(@query)

这不起作用，因为它说多部分标识符myTable无法绑定。在第4-8行

我见过有人这样建议：

CREATE TABLE #tmp
(
    id varchar(50),
    counter int,
    myDate smalldatetime
)
Insert Into #tmp (id, counter, myDate)
SELECT * FROM myTable
--GO                       --doesn't work either with or without 'go'
DECLARE @query varchar(1500)
SET @query = 
'SELECT Id,'
+ 'SUM(CASE WHEN ['+convert(varchar(50),CAST(#tmp.myDate AS date),120)+'] = ['+convert(varchar(50), CAST(GETDATE() AS date), 120)+'] then [counter] else 0 end) ''0'','
+ 'SUM(CASE WHEN ['+convert(varchar(50),CAST(DATEADD(day, -1, #tmp.myDate)), 120)+'] = ['+convert(varchar(50),CAST(DATEADD(day, -1, GETDATE()) AS date), 120)+'] then [counter] else 0 end) ''1'','
+ 'SUM(CASE WHEN ['+convert(varchar(50),CAST(DATEADD(day, -2, #tmp.myDate)), 120)+'] = ['+convert(varchar(50),CAST(DATEADD(day, -2, GETDATE()) AS date), 120)+'] then [counter] else 0 end) ''2'','
+ 'SUM(CASE WHEN ['+convert(varchar(50),CAST(DATEADD(day, -3, #tmp.myDate)), 120)+'] = ['+convert(varchar(50),CAST(DATEADD(day, -3, GETDATE()) AS date),120)+'] then [counter] else 0 end) ''3'','
+ 'SUM(CASE WHEN [+'convert(varchar(50),CAST(DATEADD(day, -4, #tmp.myDate)), 120)+'] = ['+convert(varchar(50),CAST(DATEADD(day, -4, GETDATE()) AS date),120)+'] then [aounter] else 0 end) ''4'''
+ 'FROM [myTable] GROUP BY Id'
PRINT(@query)
EXEC(@query)

还是不行。请帮忙

我的问题的简化版本：

---

不起作用

尝试以下方法：

CREATE TABLE #tmp
(
    id varchar(50),
    counter int,
    myDate smalldatetime
)
Insert Into #tmp (id, counter, myDate)
SELECT * FROM myTable

DECLARE @query varchar(1500)
Select @query = 
'SELECT Id,'
+ 'SUM(CASE WHEN ''' + convert(varchar(50), #tmp.myDate,120) + ''' = '''+convert(varchar(50), GETDATE(), 120)+''' then ''counter'' else 0 end) ''0'','
+ 'SUM(CASE WHEN '''+convert(varchar(50), DATEADD(day, -1, #tmp.myDate), 120)+''' = '''+convert(varchar(50),DATEADD(day, -1, GETDATE()), 120)+''' then ''counter'' else 0 end) ''1'','
+ 'SUM(CASE WHEN '''+convert(varchar(50), DATEADD(day, -2, #tmp.myDate), 120)+''' = '''+convert(varchar(50),DATEADD(day, -2, GETDATE()), 120)+''' then ''counter'' else 0 end) ''2'','
+ 'SUM(CASE WHEN '''+convert(varchar(50), DATEADD(day, -3, #tmp.myDate), 120)+''' = '''+convert(varchar(50),DATEADD(day, -3, GETDATE()), 120)+''' then ''counter'' else 0 end) ''3'','
+ 'SUM(CASE WHEN '''+convert(varchar(50), DATEADD(day, -4, #tmp.myDate), 120)+''' = '''+convert(varchar(50),DATEADD(day, -4, GETDATE()), 120)+''' then ''counter'' else 0 end) ''4'''
+ ' FROM ' from #tmp 
Set @query = @query + ' #tmp GROUP BY Id'
PRINT(@query)
EXEC(@query)

---

如果加载了名为tmp的临时表，则将使用FROM tmp。。有一张桌子叫myTable，对吗？也就是说，当不在动态查询中时，从myTable中选择COUNT*是否有效？可能当前架构与预期不同？如果是的话，[theCorrectSchema].[myTable]有效吗？是的，您在第二个示例中的查询中犯了输入错误或错误，在tmpyes中，表myTable存在。如果我在dynamic之外的mytable中选择COUNT*，它会工作。我尝试了[theCorrectSchema]。[myTable]但它不起作用。为什么需要使用动态查询？因为我需要列名作为最后5个日期。例如，6月12日，它会显示12、11、10、09和08仍然不起作用。它不喜欢tmp行中的second from+from。它仍然不允许我使用tmp.myDate。仍然无法定义多部分标识符tmp.myDate。您使用的查询与我写的完全一样吗？我没有收到任何错误。谢谢！成功了。我不知道上次为什么不行。一定是抄错了怎么了^^

CREATE TABLE #tmp
(
    id varchar(50),
    counter int,
    myDate smalldatetime
)
Insert Into #tmp (id, counter, myDate)
SELECT * FROM myTable

DECLARE @query varchar(1500)
Select @query = 
'SELECT Id,'
+ 'SUM(CASE WHEN ''' + convert(varchar(50), #tmp.myDate,120) + ''' = '''+convert(varchar(50), GETDATE(), 120)+''' then ''counter'' else 0 end) ''0'','
+ 'SUM(CASE WHEN '''+convert(varchar(50), DATEADD(day, -1, #tmp.myDate), 120)+''' = '''+convert(varchar(50),DATEADD(day, -1, GETDATE()), 120)+''' then ''counter'' else 0 end) ''1'','
+ 'SUM(CASE WHEN '''+convert(varchar(50), DATEADD(day, -2, #tmp.myDate), 120)+''' = '''+convert(varchar(50),DATEADD(day, -2, GETDATE()), 120)+''' then ''counter'' else 0 end) ''2'','
+ 'SUM(CASE WHEN '''+convert(varchar(50), DATEADD(day, -3, #tmp.myDate), 120)+''' = '''+convert(varchar(50),DATEADD(day, -3, GETDATE()), 120)+''' then ''counter'' else 0 end) ''3'','
+ 'SUM(CASE WHEN '''+convert(varchar(50), DATEADD(day, -4, #tmp.myDate), 120)+''' = '''+convert(varchar(50),DATEADD(day, -4, GETDATE()), 120)+''' then ''counter'' else 0 end) ''4'''
+ ' FROM ' from #tmp 
Set @query = @query + ' #tmp GROUP BY Id'
PRINT(@query)
EXEC(@query)