给网友朋友们带来一篇MySQL相关的编程文章，网友林鹏运根据主题投稿了本篇教程内容，涉及到MySQL、差集、Minus、交集、Intersect、MySQL实现差集(Minus)和交集(Intersect)测试报告相关内容，已被781网友关注，如果对知识点想更进一步了解可以在下方电子资料中获取。
MySQL实现差集(Minus)和交集(Intersect)测试报告
可以用SQL实现同样的功能,就是麻烦了点。
drop table t1; drop table t2; create table t1(id int primary key,nickname varchar(20),playNum varchar(20)); create table t2(id int primary key,nickname varchar(20),playNum varchar(20)); insert into t1 values(1,1,10); insert into t1 values(2,2,20); insert into t1 values(3,3,30); insert into t2 values(1,1,10); insert into t2 values(2,2,200); insert into t2 values(3,33,300); commit;
MySQL实现交集
SELECT id, nickname, playNum, COUNT(*) FROM (SELECT id, nickname, playNum FROM t1 UNION ALL SELECT id, nickname, playNum FROM t2 ) a GROUP BY id, nickname, playNum HAVING COUNT(*) > 1
MySQL实现差集
SELECT t1.id, t1.nickname, t1.playNum FROM t1 LEFT JOIN t2 ON t1.id = t2.id WHERE t1.nickname != t2.nickname OR t1.playNum != t2.playNum;
