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
1、实例 代码如下:DELIMITER // DROP PROCEDURE IF EXISTS `test`.`p_getvalue` // CREATE DEFINER=`root``localhost` PROCEDURE `p_getvalue`( in id varchar(20),out s varchar(20) ) begin if (length(id)=11) then select ‘A_B_C_D’ into s; elseif(length(id)=8) then se