Select Top在不同数据库中的使用

1. oracle数据库

SELECT * FROM TABLE1 WHERE ROWNUM<=N

2. Infomix数据库

SELECT FIRST N * FROM TABLE1

3. DB2数据库

SELECT * ROW_NUMBER() OVER(ORDER BY COL1 DESC) AS ROWNUM WHERE ROWNUM<=N

或者

SELECT COLUMN FROM TABLE FETCH FIRST N ROWS ONLY

4. SQL Server数据库

SELECT TOP N * FROM TABLE1

5. Sybase数据库

SET ROWCOUNT N
GO
SELECT * FROM TABLE1
SET ROWCOUNT 0

SELECT TOP N * FROM TABLE1

6. MySQL数据库

SELECT * FROM TABLE1 LIMIT N

7. FoxPro数据库

SELECT * TOP N FROM TABLE ORDER BY COLUMN