本文主要是介绍mysql存储过程需要注意的，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！
1.当使用游标赋值结果集时，变量名不能使用列明，不然赋值为null
BEGINDECLARE stopindex INT DEFAULT 0;DECLARE id1 int;
DECLARE title VARCHAR(1000);
DECLARE description VARCHAR(1000);
DECLARE insertdate DATETIME;
DECLARE username VARCHAR(1000);
DECLARE closed int;
DECLARE commandtype VARCHAR(1000);DECLAREcur CURSOR FOR (<span style="color:#FF0000;">select id,zlmc,zlnr,fbsj,fbr,kg,zldj from jiaowei.five_instructions</span>);
DECLARE CONTINUE HANDLER FOR NOT FOUND SET stopindex = 1;
OPEN cur;
<span style="color:#FF0000;">#如此处，游标查询的表有id字段，则遍历赋值时，不能再用id做变量，不然赋值字段为null</span>
FETCH cur INTO <span style="color:#FF0000;">id1</span>,title,description,insertdate,username,closed,commandtype;WHILE (stopindex !=1) DOif closed=0 THENset closed=1;ELSEset closed=0;end if;insert into topic set id=id1,title=title,description=description,insertdate=insertdate,username=username,closed=closed,commandtype=commandtype,msgtype=0,type='指令';FETCH cur INTO id1,title,description,insertdate,username,closed,commandtype;END WHILE;CLOSE cur;END
2.当变量赋值使用 select id into 变量名 from student where name= "ffff" limit 0,1; 当查不到值时会报错运行中断。
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