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  • SQL每个月份的发生额都比101科目多的科目

    请用SQL语句实现:从TestDB数据表中查询出所有月份的发生额都比101科目相应月份的发生额高的科目。请注意:TestDB中有很多科目,都有1-12月份的发生额。
                      AccID:科目代码,Occmonth:发生额月份,DebitOccur:发生额。
                      数据库名:JcyAudit,数据集:Select * from TestDB
                      准备数据的sql代码:

     drop table if exists TestDB;
                      create table TestDB(id int primary key auto_increment,AccID 
                      varchar(20), Occmonth date, DebitOccur bigint);
                      insert into TestDB values 
                      (null,'101','1988-1-1',100),
                      (null,'101','1988-2-1',110),
                      (null,'101','1988-3-1',120),
                      (null,'101','1988-4-1',100),
                      (null,'101','1988-5-1',100),
                      (null,'101','1988-6-1',100),
                      (null,'101','1988-7-1',100),
                      (null,'101','1988-8-1',100);
                      --复制上面的数据,故意把第一个月份的发生额数字改小一点
                      insert into TestDB values 
                      (null,'102','1988-1-1',90),
                      (null,'102','1988-2-1',110),
                      (null,'102','1988-3-1',120),
                      (null,'102','1988-4-1',100),
                      (null,'102','1988-5-1',100),
                      (null,'102','1988-6-1',100),
                      (null,'102','1988-7-1',100),
                      (null,'102','1988-8-1',100);
                      --复制最上面的数据,故意把所有发生额数字改大一点
                      insert into TestDB values 
                      (null,'103','1988-1-1',150),
                      (null,'103','1988-2-1',160),
                      (null,'103','1988-3-1',180),
                      (null,'103','1988-4-1',120),
                      (null,'103','1988-5-1',120),
                      (null,'103','1988-6-1',120),
                      (null,'103','1988-7-1',120),
                      (null,'103','1988-8-1',120);
                      --复制最上面的数据,故意把所有发生额数字改大一点
                      insert into TestDB values 
                      (null,'104','1988-1-1',130),
                      (null,'104','1988-2-1',130),
                      (null,'104','1988-3-1',140),
                      (null,'104','1988-4-1',150),
                      (null,'104','1988-5-1',160),
                      (null,'104','1988-6-1',170),
                      (null,'104','1988-7-1',180),
                      (null,'104','1988-8-1',140);
                      --复制最上面的数据,故意把第二个月份的发生额数字改小一点
                      insert into TestDB values 
                      (null,'105','1988-1-1',100),
                      (null,'105','1988-2-1',80),
                      (null,'105','1988-3-1',120),
                      (null,'105','1988-4-1',100),
                      (null,'105','1988-5-1',100),
                      (null,'105','1988-6-1',100),
                      (null,'105','1988-7-1',100),
                      (null,'105','1988-8-1',100);
                   

    答案:

    select distinct AccID from TestDB 
                      where AccID not in 
                      (select TestDB.AccIDfrom TestDB,
                      (select * from TestDB where AccID='101') as db101 
                      where TestDB.Occmonth=db101.Occmonth and 
                      TestDB.DebitOccur<=db101.DebitOccur
                      );


                     
            

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  • 原文地址:https://www.cnblogs.com/zhaideyou/p/5932394.html
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