oracl 和db2 常用语法比较: 1、取前N条记录 Oracle:Select * from TableName where rownum <= N; DB2:Select * from TableName fetch first N rows only; 2、取得系统日期 Oracle:Select sysdate from dual; DB2:Select current timestamp from sysibm.sysdummy1; 3、空值转换 Oracle:Select
过程1:带返回值:
drop procedure if exists proc_addNum;
create procedure proc_addNum (in x int,in y int,out sum int)
BEGIN
SET sum= x + y;
end
然后,执行过程,out输出返回值:
call proc_addNum(2,3,sum);
select sum;
过程2:不带返回值:
drop procedure if exists proc_addNum;