Mysql中创建逻辑视图的查询应该是什么？

我必须在mysql中编写一个查询。下面是我的ad_显示表

ad_displaysId |  adv_id | campaign_id | adtypeId | clicked(boolean)

我有另一个表名作为广告，它有广告id

ad_id | advertisename

CampPaignId在此表名中为camp_表

campaign_id | camp_name

adtypeId在此表名中作为adtype

adtypeId | adtype_name

现在我想创建一个视图，从我的ad_显示表中得到这样的结果

advertise_name | camp_name | adtype_name | count_of_clicked | count_of_row

这里

我能提供的额外信息是……在广告显示中，有多个条目具有相同的广告id、相同的营地id、相同的广告类型id和点击的合谋是真还是假

我是mysql的新手。有人能建议我用mysql做这个吗？

试试这个：

create view my_ad_view as
select
    advertise_name,
    camp_name,
    adtype_name,
    sum(clicked) as count_of_clicked,
    count(*) as count_of_row
from ad_display ad
left join advertise a on a.ad_id = ad.ad_displaysId
left join camp_table ct on ct.campaign_id = ad.campaign_id
left join adtype at on at.adtypeId = ad.adtypeId 
group by advertise_name, camp_name, adtype_name

请注意

sum（单击）

的漂亮“技巧”，这是因为在mysql中

true

是

1

，

false

是

0

，所以布尔值求和会计算其为真的次数

create view my_ad_view as
select
    advertise_name,
    camp_name,
    adtype_name,
    sum(clicked) as count_of_clicked,
    count(*) as count_of_row
from ad_display ad
left join advertise a on a.ad_id = ad.ad_displaysId
left join camp_table ct on ct.campaign_id = ad.campaign_id
left join adtype at on at.adtypeId = ad.adtypeId 
group by advertise_name, camp_name, adtype_name