各种数据库查询前几条数据的方法

各种数据库查询前几条数据的方法

 

1. ORACLE
SELECT * FROM TABLE1 WHERE ROWNUM<=N
HQL: from table1 t order by t.createTime desc where rownum<=n
2. INFORMIX
SELECT FIRST N * FROM TABLE1
3. DB2
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
SELECT TOP N * FROM TABLE1
5. SYBASE
SET ROWCOUNT N
GO
SELECT * FROM TABLE1
6. MYSQL
SELECT * FROM TABLE1 LIMIT N
hibernate查询记录的前10条记录
就像mysql的SQL语句的"select * from table limit 10" hql 不支持limit
query.setFirstResult(0);//从第0条开始取
query.setMaxResults(10);//取十条记录
7. FOXPRO
SELECT * TOP N FROM TABLE ORDER BY COLUMN
8.postgres查询前几条记录SQL
SELECT * FROM TABLE LIMIT