需要学习该节内容
DELIMITER // create procedure proc_countNum(in columnId int,out rowsNo int) begin select count(*) into rowsNo from member where member_id=columnId; end call proc_countNum(1,@no); select @no; 视图: create view v_countNum as select member_id,count(*) as countNum from member group by member_id select countNum from v_countNum where member_id=1
http://www.tqcto.com/article/web/373267.html
一个表中的Id有多个记录,把所有这个id的记录查出来,并显示共有多少条记录数,用SQL语句及视图、存储过程分别实现。
原文:http://www.cnblogs.com/gengyi/p/6440753.html