摘要：
DROP PROCEDURE PROC_Z4;CREATE PROCEDURE proc_z4()BEGIN DECLARE card CHAR(20); DECLARE count INT; SELECT count(*) INTO count FROM Z4; ... 阅读全文
摘要：
存储过程代码如下：CREATE PROCEDURE proc_sum2(IN n INT,OUT sum INT,OUT j INT)BEGIN DECLARE i INT; SET i=1; SET sum=0; SET j=111; WHILE i<=n d... 阅读全文