这样的问题应该查下数据库的语法,1. ORACLE SELECT * FROM TABLE1 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 DB2 SELECT COLUMN FROM TABLE FETCH FIRST N ROWS ONLY 4. SQL SERVER SELECT TOP N * FROM TABLE1 5. SYBASE SELECT TOP N * FROM TABLE1 6. mysql: select * from table_name limit N
select * from SEC_PERSON where 时间小于统计时间 order by 时间 desc//降序if(rs.next()) 我用了order by,而且我的是if(rs.next())并没有用while....只取第一条记录哦
SELECT * FROM TABLE1 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
DB2
SELECT COLUMN FROM TABLE FETCH FIRST N ROWS ONLY
4. SQL SERVER
SELECT TOP N * FROM TABLE1
5. SYBASE
SELECT TOP N * FROM TABLE1
6. mysql:
select * from table_name limit N
我用了order by,而且我的是if(rs.next())并没有用while....只取第一条记录哦