SQL Server 2008 R2分页

Question

我需要为我的联合查询实现分页，但出现错误“Msg 102，Level 15，State 1，Line 14 ''''附近的语法不正确。我跟着我从这个link发现的例子。

select * 
    from (select Id, 
       row_number() OVER (order by Id asc) as RowNumber 
      from (select Id 
        from (select Id 
          from Table1) as table1 
       union all 
       select Id 
        from (select Id 
          from Table2) as table2)) as t Derived 
    WHERE RowNumber > 5 
    and RowNumber <= 10 

Answer 1

用途：

SELECT u.* 
    FROM (SELECT t.id, 
       ROW_NUMBER() OVER (ORDER BY t.id) as rownum 
      FROM (SELECT t1.id 
        FROM TABLE1 t1 
       UNION ALL 
       SELECT t2.id 
        FROM TABLE2 t2) as t) AS u 
WHERE u.rownum > 5 
    AND u.rownum <= 10 

在我看来，你的查询失踪了所谓的“衍生”派生表右括号，但没有必要在UNION子查询所以我删除了它们。

Answer 2

如果您从子查询中进行选择，那么您必须为其提供别名。您有2个外部子查询，但只有一个带有别名。应该是：from Table2) as tabl2) as t) as t

Answer 3

你只需要动一个括号：

from Table2) as table2)) as t Derived应该读from Table2) as table2) as t) Derived

你也可以去除一些，使表1至表1和表2中表2的子查询，但我认为有对于那些在那里的一些其他重要（如这是基于另一个更复杂的查询）

Answer 4

select * 
    from (select Id, 
       row_number() OVER (order by Id asc) as RowNumber 
      from (select Id 
        from Table1 as table1 
       union all 
       select Id 
        from Table2)p)t 
    WHERE RowNumber > 5 
    and RowNumber <= 10