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SQL每个月份的发生额都比101科目多的科目

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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
                  );

 


                 
        

SQL每个月份的发生额都比101科目多的科目

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

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