Oracle DB2

 

DB2  rownumber() over()

Oracle row_number()over()

 

db2分页sql语法   rownumber() over()

int startPage=1  //起始页
int endPage;     //终止页
int pageSize=5;  //页大小
int pageNumber=1 //请求页

startPage=(pageNumber-1)*pageSize+1
endPage=(startPage+pageSize);

select * from (select 字段1,字段2,字段3,字段4,字段5,rownumber() over(order by 排序字段 asc ) as rowid  from 表名 )as a where a.rowid >= startPage AND a.rowid <endPage

//以下sql表示取5条数据 从1取到5
select * from (select dslsid,zzjgdm,frmc,frlx,mc,frzs,fddbrxm,clrq,frzch,nsrglm,swdjrq,bgbs,bgcz,bgrq,swdjjgdm,orgdeptname,nsrsbh ,rownumber() over(order by dslsid asc ) as rowid  from FR_V_DSLS )as a where a.rowid BETWEEN 1 AND 6

不好意思，犯了个低级错误，上面的sql语句是有误的，原因在于对between and的错误理解
本人记得between and是包含前者，不包含后者，实验表明，between and 前后两者都包含。
所以上述语句应修改为：
select * from (select dslsid,zzjgdm,frmc,frlx,mc,frzs,fddbrxm,clrq,frzch,nsrglm,swdjrq,bgbs,bgcz,bgrq,swdjjgdm,orgdeptname,nsrsbh ,rownumber() over(order by dslsid asc ) as rowid  from FR_V_DSLS )as a where a.rowid >= 1 AND  a.rowid < 6

 

 

 

//Oracle 11G

select FUNC_ID, FE_SEQ_NO, rownum  from MEMFIS_CODED_VALUE where rownum <> 5;

//will list  the top 4 data.

 

 

Oracle:

 

set autotrace off;
truncat/del

 

spool  c:\test\oracleout.txt;
spool off;

 

desc MEMFIS_LANGUAGE;

SELECT table_name FROM tabs;
select user from dual;

 

 

 Oracle  物化视图

create materialized view ....refresh ...

 

 

 

 

group by 原则：select后面的所有列理，没有使用聚合函数的列，必须出现在group by 后面