sql在不同資料庫查詢前幾條資料
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查詢記錄的前10條記錄
就像mysql的sql語句的"select * from table limit 10" hql 不支援limit
query.setfirstresult(0);//從第0條開始取
query.setmaxresults(10);//取十條記錄
7. foxpro
select * top n from table order by column
8.postgres查詢前幾條記錄sql
select * from table limit
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