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MySQL、sqlserver oracle数据库连接方式
2022-07-07 17:23:00 【Aimin20210819】
编程连接方式
sql server默认端口号为:1433
URL:"jdbc:microsoft:sqlserver://localhost:1433;DatabaseName=dbname"
DRIVERNAME:"com.microsoft.jdbc.sqlserver.SQLServerDriver";
mysql 默认端口号为:3306
URL:jdbc:mysql://localhost:3306/test? user=root&password=&useUnicode=true&characterEncoding=gbk
DRIVERNAME:"com.mysql.jdbc.Driver";
oracle 默认端口号为:1521
URL:"jdbc:oracle:thin:@localhost :1521:orcl";
DRIVERNAME:"oracle.jdbc.driver.OracleDriver";
DOS是Disk Operation System的简称,意为磁盘操作系统
创建表添加注解
CREATE TABLE `t_account_phone_pool` (
`id` bigint(20) NOT NULL AUTO_INCREMENT,
`create_time` datetime DEFAULT NULL COMMENT '创建时间',
`update_time` datetime DEFAULT NULL COMMENT '修改时间',
`is_enable` tinyint(1) NOT NULL DEFAULT '1' COMMENT '数据可用 0:不可用;1:可用',
`is_delete` tinyint(1) NOT NULL DEFAULT '0' COMMENT '逻辑删除 0:未删除;1:删除',
`create_user` varchar(20) DEFAULT NULL COMMENT '创建人',
`update_user` varchar(20) DEFAULT NULL COMMENT '修改人',
`account_name` varchar(20) NOT NULL COMMENT '帐号名称',
`phone` varchar(20) NOT NULL COMMENT '号码',
`send_limit_count` int(11) NOT NULL COMMENT '发送限制次数',
PRIMARY KEY (`id`),
KEY `idx_phone_account_name` (`phone`,`account_name`),
KEY `idx_phone` (`phone`),
KEY `idx_account_name` (`account_name`)
) ENGINE=InnoDB AUTO_INCREMENT=2 DEFAULT CHARSET=utf8 COMMENT='帐号-号码池表';
命令查看表中字段注释(解释)
show full columns from tablename;
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