hibernate的继承映射
hibernate的继承映射有三种策略：joined_table、single_table、table_per_class
我们今天使用single_table作为例子
domain：
FriendTypeDiy：Hibernate: select this_.ftd_id as ftd2_0_1_, this_.ftd_name as ftd3_0_1_, this_.user_id as user4_0_1_, um1_.user_id as user1_1_0_, um1_.user_code as user2_1_0_, um1_.user_password as user3_1_0_, um1_.user_gender as user4_1_0_, um1_.user_date_of_birth as user5_1_0_, um1_.user_image as user6_1_0_, um1_.user_email as user7_1_0_, um1_.user_remark as user8_1_0_, um1_.user_name as user9_1_0_ from mag_friend_type_common this_ inner join mag_user_main um1_ on this_.user_id=um1_.user_id where this_.friend_type=1 and um1_.user_id=?我的亲戚
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