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  • 表,是一张还是四张,还是三张,

    @interface IMMessageInfo : NSObject

     

    @property(nonatomic) int messageId;

    @property(nonatomic,strong) NSString *content;

    @property(nonatomic) double sendDate;

    @property(nonatomic) ChatMessageType type;

    @property(nonatomic) ChatMessageState state;

    @property(nonatomic) CGFloat voice_durition;

    @property(nonatomic,strong) NSString *pic_voice_localPath;//本地图片或语音地址

    @property(nonatomic,strong) NSString *pic_voice_networkPath;//网络图片或语音地址

    @property(nonatomic,strong) NSString *thumbnail_networkPath;//网络图片缩略图地址

    @property(nonatomic) CGFloat pic_width;

    @property(nonatomic) CGFloat pic_height;

    @property(nonatomic) BOOL isPlay;

     

     

    @end

     

    @interface IMUserInfo : NSObject

     

    @property(nonatomic) int openfireAccountId;

    @property(nonatomic,strong) NSString *riches_grade;

    @property(nonatomic,strong) NSString *singer_grade;

    @property(nonatomic,strong) NSString *nick;

    @property(nonatomic,strong) NSString *avatar;

     

    @end

     

    @interface IMUserRelateInfo : NSObject

     

    @property(nonatomic) int relateId;

    @property(nonatomic) int currentOpenfireAccountId;

    @property(nonatomic) int friendOpenfireAccountId;

     

    @end

     

     

    @interface IMUserMessageRelateInfo : NSObject

     

    @property(nonatomic) int messageId;

    @property(nonatomic) int kgwbAccountId;

    @property(nonatomic) int messageSenderId;

    @property(nonatomic) int messageReceiverId;

     

    @end

     

    @interface ChatMessageInfo : NSObject

     

    @property(nonatomic) int idNumber;

    @property(nonatomic) int ownerId;

    @property(nonatomic) int friendId;

    @property(nonatomic,strong) NSString *messageId;

    @property(nonatomic) int fromId;

    @property(nonatomic) int toId;

    @property(nonatomic,strong) NSString *nick;

    @property(nonatomic,strong) NSString *avatar;

    @property(nonatomic) double sendDate;

    @property(nonatomic,strong) NSString *content;

    @property(nonatomic) ChatMessageType type;

    @property(nonatomic) ChatMessageState state;

    @property(nonatomic) CGFloat durition;

    @property(nonatomic,strong) NSString *localPath;

    @property(nonatomic,strong) NSString *networkPath;

    @property(nonatomic,strong) NSString *sNetworkPath;

    @property(nonatomic) CGFloat width;

    @property(nonatomic) CGFloat height;

     

    @property(nonatomic,strong) NSString *ofusername;

    @property(nonatomic,strong) NSString *ofId;

    @property(nonatomic,strong) NSString *riches_grade;

    @property(nonatomic,strong) NSString *title;

     

    @property(nonatomic) BOOL isPlay;

    @end

    select * from IMUser as u,(select *from IMMessage order by IMMessage.sendData desc) as m where (m.messageSenderId = u.openfireAccountId or m.messageReceiverId = u.openfireAccountId) and (u.openfireAccountId != 1234) group by u.openfireAccountId

    1,分组,只要是在两个 表里面的字段都是可以的

    2,拿着 openfireAccountId 把user表字段全部读取出来,然后 去另外 一个表的筛选  最后拼接在一块,

    3,m.messageReceiverId = u.openfireAccountId 这个 意味着接收 信息的人可以拿到信息的,因此 那条信息 不隶属 特定的一个人,而是 相互发和接收 的两个人,

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  • 原文地址:https://www.cnblogs.com/guligei/p/3607296.html
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