SELECT SQL 1的ANSI SQL版本

Question

是否有符合ANSI SQL的SQL SERVER版本SELECT TOP n？

Answer 1

ANSI/ISO SQL:2003引入了窗口函数:

SELECT * FROM (
  SELECT
    ROW_NUMBER() OVER (ORDER BY age ASC) AS rownum,
    person_id,
    person_name,
    age
  FROM person
) AS foo
WHERE rownum <= 3

自SQL Server 2005以来,Microsoft SQL Server支持此语法.http: //msdn.microsoft.com/en-us/library/ms189798(v = sql.90).aspx

ANSI/ISO SQL:2008引入了更简单的语法FETCH FIRST,可能更类似于Microsoft/Sybase TOP语法:

SELECT person_id, person_name, age FROM person
FETCH FIRST 3 ROWS ONLY

Microsoft尚不支持此语法.另见http://en.wikipedia.org/wiki/Select_(SQL)#Limiting_result_rows

如果您仍在使用Microsoft SQL Server 2000,那么您应该阅读我之前发布的关于执行"分页"样式查询的问题: 在Microsoft SQL Server 2000中模拟MySQL LIMIT子句