Question

如何制定此查询

update forge..dimInteg2
   set duplicates = 
      (select count(*) from (select idCover 
                                 from x90..dimCover
                                 group by idCover
                                 having count(*) > 1)) 
where dimTable = 'dimCover'

避免此错误

Line 6: Incorrect syntax near ')'.

与[SQL Server subquery syntax相似但我似乎无法使用别名技巧。

我在SQL Server 2000上

Answer 1

你错过了一个括号吗？

update forge..dimInteg2
set duplicates = 
  (select count(*) from (select idCover 
                             from x90..dimCover
                             group by idCover
                             having count(*) > 1) ) --HERE
where dimTable = 'dimCover'

然后别名解决方案应该有效。

Answer 2

尝试将字段dimTable添加到第二个选择语句：

update forge..dimInteg2
   set duplicates = 
      (select count(*) from (select idCover --, dimTable HERE
                                 from x90..dimCover
                                 group by idCover
                                 having count(*) > 1) 
where dimTable = 'dimCover'

Answer 3

您需要命名派生表。

更新forge..dimInteg2 设置重复= （从中选择count（dimCover.idCover）（选择idCover 来自x90..dimCover idCover分组有计数（*）＆gt; 1）dimCover）其中dimTable ='dimCover'

SQL Server语法，用于通过子查询进行更新

3 个答案: