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https://gitee.com/best_handsome/mybatis-plus-join
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update
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12
README.md
12
README.md
@ -61,10 +61,10 @@ class test {
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void testJoin() {
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List<UserDTO> list = userMapper.selectJoinList(new MyLambdaQueryWrapper<UserEntity>()
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.selectAll(UserEntity.class)
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.leftJoin(UserEntity::getId, UserAddressEntity::getUserId, r1 -> r1
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.select(UserAddressEntity::getAddress)
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.leftJoin(UserAddressEntity::getAreaId, AreaEntity::getId,
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r2 -> r2.select(AreaEntity::getProvince)))
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.leftJoin(UserEntity::getId, UserAddressEntity::getUserId,
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r1 -> r1.select(UserAddressEntity::getAddress)
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.leftJoin(UserAddressEntity::getAreaId, AreaEntity::getId,
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r2 -> r2.select(AreaEntity::getProvince)))
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, UserDTO.class);
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}
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}
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@ -93,8 +93,8 @@ class test {
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.selectAll(主表实体类.class)
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.leftJoin(主表实体类on属性, 子表实体类on属性, 子表对象 -> 子表对象
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.select(子表查询字段)
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.leftJoin(UserAddressEntity::getAreaId, AreaEntity::getId,
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r2 -> r2.select(AreaEntity::getProvince)))
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.leftJoin(第二个表的on属性, 第三个表的on属性,
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r2 -> r2.select(第三个表的查询字段)))
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, UserDTO.class);//返回对象class
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}
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}
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