- 七种数据库中Select Top的使用方法
- 1. Oracle数据库
- SELECT * FROM TABLENAME WHERE ROWNUM <= N
- 2. Infomix数据库
- SELECT FIRST N * FROM TABLENAME
- 3. DB2数据库
- SELECT *
- FROM (SELECT * ROW_NUMBER() OVER({ORDER BY COL1 DESC}) AS ROWNUM FROM TABLENAME)
- WHERE ROWNUM <= N
- 或者
- SELECT COLUMN FROM TABLENAME FETCH FIRST N ROWS ONLY
- 4. SQL Server数据库
- SELECT TOP N * FROM TABLENAME
- 5. Sybase数据库
- SET ROWCOUNT N
- GO
- SELECT * FROM TABLENAME
- 6. MySQL数据库
- SELECT * FROM TABLENAME LIMIT N
- 7. FoxPro数据库
- SELECT * TOP N FROM TABLENAME ORDER BY COLUMN