我的mysql表是:
create table `ec_core_order_log` (
`tx_logistic_id` varchar(50) not null,
`create_time` timestamp not null default current_timestamp comment '创建时间',
`update_time` timestamp null comment '支付成功/支付失败时间',
`payAmount` varchar(10) comment '支付金额',
`payTime` varchar(100) comment '支付时间',
`unitId` varchar(50) comment 'PDA发起支付时传入的网点id',
`employeeId` varchar(50) comment 'PDA发起支付时传入的员工号',
`re` varchar(512),
primary key (`tx_logistic_id`)
) engine=InnoDB default charset=utf8现在我想做的是,给这个表中添加一个id列,Id列自增,int类型,并且与tx_logistic_id列,联合作为主键,求教,这个 sql怎么写
create table `ec_core_order_log` (
`tx_logistic_id` varchar(50) not null,
`create_time` timestamp not null default current_timestamp comment '创建时间',
`update_time` timestamp null comment '支付成功/支付失败时间',
`payAmount` varchar(10) comment '支付金额',
`payTime` varchar(100) comment '支付时间',
`unitId` varchar(50) comment 'PDA发起支付时传入的网点id',
`employeeId` varchar(50) comment 'PDA发起支付时传入的员工号',
`re` varchar(512),
primary key (`tx_logistic_id`)
) engine=InnoDB default charset=utf8现在我想做的是,给这个表中添加一个id列,Id列自增,int类型,并且与tx_logistic_id列,联合作为主键,求教,这个 sql怎么写
create table `ec_core_order_log` (
id int auto_increment ,
`tx_logistic_id` varchar(50) not null,
`create_time` timestamp not null default current_timestamp comment '创建时间',
`update_time` timestamp null comment '支付成功/支付失败时间',
`payAmount` varchar(10) comment '支付金额',
`payTime` varchar(100) comment '支付时间',
`unitId` varchar(50) comment 'PDA发起支付时传入的网点id',
`employeeId` varchar(50) comment 'PDA发起支付时传入的员工号',
`re` varchar(512),
primary key (id,`tx_logistic_id`)
) engine=InnoDB default charset=utf8
primary key (id,`tx_logistic_id`)这样和primary key (id)基本没有区别
id int auto_increment,
`tx_logistic_id` varchar(50) not null,
`create_time` timestamp not null default current_timestamp comment '创建时间',
`update_time` timestamp null comment '支付成功/支付失败时间',
`payAmount` varchar(10) comment '支付金额',
`payTime` varchar(100) comment '支付时间',
`unitId` varchar(50) comment 'PDA发起支付时传入的网点id',
`employeeId` varchar(50) comment 'PDA发起支付时传入的员工号',
`re` varchar(512),
primary key (id,`tx_logistic_id`)
) engine=InnoDB default charset=utf8
`tx_logistic_id` varchar(50) not null,
`create_time` timestamp not null default current_timestamp comment '创建时间',
`update_time` timestamp null comment '支付成功/支付失败时间',
`payAmount` varchar(10) comment '支付金额',
`payTime` varchar(100) comment '支付时间',
`unitId` varchar(50) comment 'PDA发起支付时传入的网点id',
`employeeId` varchar(50) comment 'PDA发起支付时传入的员工号',
`re` varchar(512),
primary key (`tx_logistic_id`)
) engine=InnoDB default charset=utf8;ALTER TABLE `ec_core_order_log` ADD id INT AUTO_INCREMENT,DROP PRIMARY kEY,
ADD PRIMARY KEY (id,tx_logistic_id)