create table orde(id varchar(10),date datetime,orders varchar(10));
 insert into orde values('1' , '2019/1/1',10 )
insert into orde values('1' , '2019/1/2',109 )
insert into orde values('1' , '2019/1/3',150 )
insert into orde values('1' , '2019/1/4',99)
insert into orde values('1' , '2019/1/5',145)
insert into orde values('1' , '2019/1/6',1455)
insert into orde values('1' , '2019/1/7',199)
insert into orde values('1' , '2019/1/8',188 )
insert into orde values('4' , '2019/1/1',10 )
insert into orde values('2' , '2019/1/2',109 )
insert into orde values('3' , '2019/1/3',150 )
insert into orde values('4' , '2019/1/4',99)
insert into orde values('5' , '2019/1/5',145)
insert into orde values('6' , '2019/1/6',1455)
insert into orde values('7' , '2019/1/7',199)
insert into orde values('8' , '2019/1/8',188 )
insert into orde values('9' , '2019/1/1',10 )
insert into orde values('9' , '2019/1/2',109 )
insert into orde values('9' , '2019/1/3',150 )
insert into orde values('9' , '2019/1/4',99)
insert into orde values('9' , '2019/1/6',145)
insert into orde values('9' , '2019/1/9',1455)
insert into orde values('9' , '2019/1/10',199)
insert into orde values('9' , '2019/1/13',188 )

思路

將表按照id分組根據(jù)時(shí)間排名，時(shí)間減去排名rnk,如果時(shí)間是連續(xù)的則相減的結(jié)果相等：

select *,date-排名 rnk from (select *,row_number() over(partition by id order by date) 排名 from orde) a;

然后按照id，rnk分組，計(jì)數(shù)

 select id,rnk,count(*) ok from 
(select *,date-排名 rnk from (select *,row_number() over(partition by id order by date) 排名 from orde) a) b group by id,rnk;

得到下表：

最后篩選計(jì)數(shù)項(xiàng)ok>=7的。

還可以直接進(jìn)行篩選：

 select id,rnk from 
(select *,date-排名 rnk from (select *,row_number() over(partition by id order by date) 排名 from orde) a) b group by id,rnk having count(*)>=7;

以上所述是小編給大家介紹的SQL查詢至少連續(xù)七天下單的用戶，希望對(duì)大家有所幫助。在此也非常感謝大家對(duì)腳本之家網(wǎng)站的支持！

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