Question

我正在编写以下查询：

select object_id from sys.columns  
where name in ('TCP_Port_Export','TCP_Port_Import')
order by 1 desc

并将结果显示为：

的object_id

1322342229
1322342229个
1306136094个
1306136094个
284905178个
284905178

然后我将此查询混合为：

select name from sys.tables where object_id in (select object_id from sys.columns  
where name in ('TCP_Port_Export','TCP_Port_Import'))

我得到的结果如下：名称

IB_Formats_BACKUP
IB_Formats
IB_Formats_Archive

但在我将此查询合并到表单后：

select * from (select name from sys.tables where object_id in (select object_id from sys.columns  
where name in ('TCP_Port_Export','TCP_Port_Import')))

我收到以下错误：

Msg 102，Level 15，State 1，Line 3 ＆＃39;）＆＃39;附近的语法不正确。

有人可以帮忙吗？

Answer 1

您需要先对查询进行别名，然后才能从中SELECT进行操作。所以你需要把它改成：

select * from 
(select name from sys.tables 
 where object_id in 
 (select object_id from sys.columns  
  where name in ('TCP_Port_Export','TCP_Port_Import'))) as s

但是，这将返回与运行中间和最内层查询相同的结果，因此请说明您需要最高查询的原因。

编写三重查询时出现语法错误

1 个答案: