最赞回答 / 慕粉1720382552
<...图片...>http://blog.csdn.net/hanxuemin12345/article/details/7828206
2017-07-06
create procedure removeage(in p_age smallint unsigned,out deletecounts smallint unsigned,out usercounts smallint unsigned)
-> begin
-> delete from t1 where age=p_age;
-> select row_count into deletecounts;
-> selete count(id) from t1 into usercounts;
-> end
-> //
我哪边写错了
-> begin
-> delete from t1 where age=p_age;
-> select row_count into deletecounts;
-> selete count(id) from t1 into usercounts;
-> end
-> //
我哪边写错了
2017-07-06
最新回答 / __小七__
尾数的范围确实是(1,2),这是浮点数标准IEEE规定的,默认尾数小数点前面是1,节省了一个位的数据,我百度到的公式:(-1)s x 2e-127 x (1.f)2 ,f是尾数的数值,由二进制表示的。具体可以百IEEE浮点数标准,关于浮点数的值有很详细的解释。
2017-07-06