SQLSERVER的问题.在线等,追加分..

Posted 2023-04-25

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先有表T1,字段A1(统计),A2(人数),A3(国别),A4(次数),M1,M2,M3,M4,M5,M6,M7,M8,M9,M10,M11,M12
(M1-M12表示12个月不能重复)
我希望查询出来的结果是:
A1 M1 M2 M3 M4 M5 M6 M7 M8 M9 M10 M11 M12
A2
A3
A4
A2,A3,A4的数据对应在M1-M12.
麻烦写下完整的语句啊..

问题我自己已经解决了.谢谢大家了.

你好，我为测试就随便建了个表，在我这可以查出，但不知道是不是你要的效果，你看下create table txt_person
(
pID int primary key identity(1,1),
pmonth varchar(20),--月份
pnum int default 1,--次数
pcountry varchar(20),--国别
pcol int--人数
)

insert into txt_person(pmonth,pcountry, pcol) select pmonth, pcountry,pcol from txt_person --values('中国',2)
insert into txt_person(pmonth,pcountry, pcol) values('六月','美国',2)
select * from txt_person

select pmonth, sum(pnum) as 次数,pcountry,sum(pcol) as 人数 from txt_person group by pmonth,pcountry 参考技术A 用union all实现：

select A1,M1,M2,M3,M4,M5,M6,M7,M8,M9,M10,M11,M12 from T1
union all
select A2,M1,M2,M3,M4,M5,M6,M7,M8,M9,M10,M11,M12 from T1
union all
select A3,M1,M2,M3,M4,M5,M6,M7,M8,M9,M10,M11,M12 from T1
union all
select A4,M1,M2,M3,M4,M5,M6,M7,M8,M9,M10,M11,M12 from T1;

---
以上，希望对你有所帮助。参考技术B select A1,count(M1) as M1,......... from table group by A1

这样? 参考技术C secelt A1,M1 ,M2 ,M3 ,M4 ,M5 ,M6, M7, M8, M9 ,M10 ,M11, M12 from T1
go
secelt A2,M1 ,M2 ,M3 ,M4 ,M5 ,M6, M7, M8, M9 ,M10 ,M11, M12 from T1
go
secelt A3,M1 ,M2 ,M3 ,M4 ,M5 ,M6, M7, M8, M9 ,M10 ,M11, M12 from T1
go
secelt A4,M1 ,M2 ,M3 ,M4 ,M5 ,M6, M7, M8, M9 ,M10 ,M11, M12 from T1
go 参考技术D 先count(*)，然后group by 月份,貌似挺难啊！