时间:2021-07-01 10:21:17 帮助过:1人阅读
- <code>$u = D('user');
- $u->name = 'xiak';
- $u->password = 'qqqqqq';
- $u->shop = array(
- 'gg' => '1',
- );
- $u->relation(true)->add($data);</code>
- <code>user(id, name)
- shop(id, name)
- user_shop(user_id,shop_id)</code>
- <code>class UserModel extends RelationModel {
- protected $_link = array(
- 'shop' => array(
- 'mapping_type' => self::MANY_TO_MANY,
- 'relation_table' => '__USER_SHOP__',
- )
- }</code>
怎么没有效果啊?
sql调试是这样的:
- <code>[user] SHOW COLUMNS FROM `tb_user` (executeTime: 0.009001s )
- [user] INSERT INTO `tb_user` (`name`,`password`) VALUES ('xiak','qqqqqq') (executeTime: 0.117007s )
- [shop] SHOW COLUMNS FROM `tb_shop` (executeTime: 0.013001s )
- [shop] INSERT INTO tb_user_shop (user_id,shop_id) SELECT a.id,b.id FROM tb_user AS a ,tb_shop AS b where a.id =45 AND b.id IN (1) (executeTime: 0.001000s )</code>
手册上说 当MANY_TO_MANY时,不建议使用关联插入。是什么意思啊?
- <code>$u = D('user');
- $u->name = 'xiak';
- $u->password = 'qqqqqq';
- $u->shop = array(
- 'gg' => '1',
- );
- $u->relation(true)->add($data);</code>
- <code>user(id, name)
- shop(id, name)
- user_shop(user_id,shop_id)</code>
- <code>class UserModel extends RelationModel {
- protected $_link = array(
- 'shop' => array(
- 'mapping_type' => self::MANY_TO_MANY,
- 'relation_table' => '__USER_SHOP__',
- )
- }</code>
怎么没有效果啊?
sql调试是这样的:
- <code>[user] SHOW COLUMNS FROM `tb_user` (executeTime: 0.009001s )
- [user] INSERT INTO `tb_user` (`name`,`password`) VALUES ('xiak','qqqqqq') (executeTime: 0.117007s )
- [shop] SHOW COLUMNS FROM `tb_shop` (executeTime: 0.013001s )
- [shop] INSERT INTO tb_user_shop (user_id,shop_id) SELECT a.id,b.id FROM tb_user AS a ,tb_shop AS b where a.id =45 AND b.id IN (1) (executeTime: 0.001000s )</code>
手册上说 当MANY_TO_MANY时,不建议使用关联插入。是什么意思啊?
难道就没有人跟我一样,觉得分拆SQL再加事务才是最好的方案吗,关联的SQL其它人看起来是不是很受罪呢