添的博客

MySQL RPMhttps://repo.mysql.com/安装sudo yum install -y -q https://repo.mysql.com//mysql80-community-release-el7-3.noarch.rpmsudo yum -y install yum-utils# 禁用mysql80-communitysudo yum-config-manager --disable mysql80-community# 启用mysql57-communitysud

生成时间段不交叉的数据。设置四个变量，主要DROP TABLE IF EXISTS `ordertable`;CREATE TABLE `ordertable` ( `orderID` varchar(36) COLLATE utf8mb4_unicode_ci NOT NULL COMMENT '订单ID', `postedTime` varchar(20) COLLATE...