sql-server - SQL Server 2008 R2 中的窗口函数问题

Question

我在以下 SQL 脚本中遇到执行错误:

SELECT TOP 1 PERCENT
    a.accode, a.voucherdate, a.credit, a.Debit,
    SUM(a.Debit) OVER (ORDER BY [a.accode],[a.voucherdate]) AS rdr 
FROM
    VoucherMain AS a 
ORDER BY 
    a.accode, a.voucherdate

错误信息

Incorrect syntax near 'order'

谁能告诉我我的语法有什么问题？

Answer 1

问题是您需要 SQL Server 2012 及更高版本。好的，我为 future 的访客添加了“及以上”，但比较 2008 OVER CLAUSE与 2012 OVER CLAUSE .

2008 版有这个重要说明:

When used in the context of a ranking window function, <ORDER BY
Clause> can only refer to columns made available by the FROM clause. An integer cannot be specified to represent the position of the name or alias of a column in the select list. <ORDER BY Clause> cannot be used with aggregate window functions.