SQL查询前几条数据的方法

sql在不同数据库查询前几条数据 
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