各种数据库如何读取前N条记录

各种数据库如何读取前N条记录

各种数据库如何读取前N条记录
1. ORACLE
Select * FROM TABLE1 Where ROWNUM<=N

2. INFORMIX
Select FIRST N * FROM TABLE1 where 1=1

3. MYSQL
Select * FROM TABLE1 where 1=1 LIMIT N
(以上三种是俺工作中用到的数据库)

4. DB2
Select * ROW_NUMBER() OVER(ORDER BY COL1 DESC) AS ROWNUM Where ROWNUM<=N
或者
Select COLUMN FROM TABLE where 1=1 FETCH FIRST N ROWS ONLY

5. SQL SERVER
Select TOP N * FROM TABLE1 where 1=1
or
SET ROWCOUNT N Select * FROM TABLE1 where 1=1 SET ROWCOUNT N1

6. SYBASE
SET ROWCOUNT N Select * FROM TABLE1 where 1=1 SET ROWCOUNT N1

7. FOXPRO
Select * TOP N FROM TABLE orDER BY COLUMN

8. ACCESS
Select TOP N * FROM TABLE1 where 1=1