third_codes/mybatis-plus-join
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admin 2021-01-29 18:18:59 +08:00
parent b661b630d9
commit af5fe0e0df
1 changed files with 5 additions and 4 deletions
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@ -91,10 +91,11 @@ class test {
void testJoin() {
List<UserDTO> list = userMapper.selectJoinList(new MyLambdaQueryWrapper<user表>()
.selectAll(user表实体类.class)//查询user表全部字段
.leftJoin(user表on字段, user_address表on字段, user_address表对象 -> user_address表对象
.select(user_address表address字段)
.leftJoin(user_address表表的on字段, area表的on字段,
r2 -> r2.select(area表的province字段)))
.leftJoin(user表on字段, user_address表on字段,
user_address表对象 -> user_address表对象
.select(user_address表address字段)
.leftJoin(user_address表表的on字段, area表的on字段,
area表对象 -> area表对象.select(area表的province字段)))
, UserDTO.class);//返回对象class
}
}