我们尝试用生成的列创建一个表。
请查看以下查询以了解我们当前的表结构：
表偏瘫：
CREATE TABLE `Heepsy` (
`id` int(11) unsigned NOT NULL AUTO_INCREMENT,
`username` varchar(200) COLLATE utf8mb4_bin DEFAULT NULL,
`photo_url` varchar(300) COLLATE utf8mb4_bin DEFAULT NULL,
`followers` int(10) DEFAULT NULL,
`engagement` decimal(5,2) DEFAULT NULL,
PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=51731 DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_bin;
Table HypeAuditor：
CREATE TABLE `HypeAuditor` (
`id` int(11) unsigned NOT NULL AUTO_INCREMENT,
`username` varchar(200) CHARACTER SET utf8mb4 COLLATE utf8mb4_bin DEFAULT NULL,
`engaement` decimal(5,2) DEFAULT NULL,
`Country` varchar(200) CHARACTER SET utf8mb4 COLLATE utf8mb4_bin DEFAULT NULL,
`Country_percentage` int(3) DEFAULT NULL,
`Interest1` varchar(200) CHARACTER SET utf8mb4 COLLATE utf8mb4_bin DEFAULT NULL,
`Interest1_percentage` int(3) DEFAULT NULL,
`Interest2` varchar(200) CHARACTER SET utf8mb4 COLLATE utf8mb4_bin DEFAULT NULL,
`Interest2_percentage` int(3) DEFAULT NULL,
`Interest3` varchar(200) CHARACTER SET utf8mb4 COLLATE utf8mb4_bin DEFAULT NULL,
`Interest3_percentage` int(3) DEFAULT NULL,
PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=27123 DEFAULT CHARSET=utf8;
忍者桌外传：
CREATE TABLE `NinjaOutreach` (
`id` int(11) unsigned NOT NULL AUTO_INCREMENT,
`username` varchar(200) COLLATE utf8mb4_bin DEFAULT NULL,
`fullname` varchar(200) COLLATE utf8mb4_bin DEFAULT NULL,
`photo_url` varchar(300) CHARACTER SET utf8 DEFAULT NULL,
`followers` int(10) DEFAULT NULL,
`engagement` decimal(5,2) DEFAULT NULL,
`city` varchar(100) CHARACTER SET utf8 DEFAULT NULL,
`state` varchar(100) CHARACTER SET utf8 DEFAULT NULL,
`country` varchar(100) CHARACTER SET utf8 DEFAULT NULL,
`category_1` varchar(200) CHARACTER SET utf8 DEFAULT NULL,
`category_2` varchar(200) CHARACTER SET utf8 DEFAULT NULL,
`category_3` varchar(200) CHARACTER SET utf8 DEFAULT NULL,
`category_4` varchar(200) CHARACTER SET utf8 DEFAULT NULL,
`category_5` varchar(200) CHARACTER SET utf8 DEFAULT NULL,
`category_6` varchar(200) CHARACTER SET utf8 DEFAULT NULL,
PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=296788 DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_bin;
科比尼尔表：
CREATE TABLE `Kombiniert` (
`id` int(11) unsigned NOT NULL AUTO_INCREMENT,
`username` varchar(200) CHARACTER SET utf8mb4 COLLATE utf8mb4_bin DEFAULT NULL,
`fullname` varchar(200) CHARACTER SET utf8mb4 COLLATE utf8mb4_bin DEFAULT NULL,
`followers_heepsy` int(11) DEFAULT NULL,
`followers_ninjaoutreach` int(11) DEFAULT NULL,
`followers_average` int(11) DEFAULT NULL,
`engagement_heepsy` decimal(5,4) DEFAULT NULL,
`engagement_ninjaoutreach` decimal(5,4) DEFAULT NULL,
`engagement_hypeauditor` decimal(5,4) DEFAULT NULL,
`engagement_average` decimal(5,4) DEFAULT NULL,
`city` varchar(200) CHARACTER SET utf8mb4 COLLATE utf8mb4_bin DEFAULT NULL,
`state` varchar(200) CHARACTER SET utf8mb4 COLLATE utf8mb4_bin DEFAULT NULL,
`country` varchar(200) CHARACTER SET utf8mb4 COLLATE utf8mb4_bin DEFAULT NULL,
`category1` varchar(200) CHARACTER SET utf8mb4 COLLATE utf8mb4_bin DEFAULT NULL,
`category2` varchar(200) CHARACTER SET utf8mb4 COLLATE utf8mb4_bin DEFAULT NULL,
`category3` varchar(200) CHARACTER SET utf8mb4 COLLATE utf8mb4_bin DEFAULT NULL,
`category4` varchar(200) CHARACTER SET utf8mb4 COLLATE utf8mb4_bin DEFAULT NULL,
`category5` varchar(200) CHARACTER SET utf8mb4 COLLATE utf8mb4_bin DEFAULT NULL,
`category6` varchar(200) CHARACTER SET utf8mb4 COLLATE utf8mb4_bin DEFAULT NULL,
`follower_interest1` varchar(200) CHARACTER SET utf8mb4 COLLATE utf8mb4_bin DEFAULT NULL,
`follower_interest1_share` decimal(5,4) DEFAULT NULL,
`follower_interest2` varchar(200) CHARACTER SET utf8mb4 COLLATE utf8mb4_bin DEFAULT NULL,
`follower_interest2_share` decimal(5,4) DEFAULT NULL,
`follower_interest3` varchar(200) CHARACTER SET utf8mb4 COLLATE utf8mb4_bin DEFAULT NULL,
`follower_interest3_share` decimal(5,4) DEFAULT NULL,
`follower_country` varchar(200) CHARACTER SET utf8mb4 COLLATE utf8mb4_bin DEFAULT NULL,
`follower_country_share` decimal(5,4) DEFAULT NULL,
`follower_country_total` int(11) DEFAULT NULL,
`follower_country_engaged` int(11) DEFAULT NULL,
PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;
Kombiniert：followers_average： “ followers_heepsy”和“ followers_ninjaoutreach”列的平均值，但前提是两者均大于0。如果只有一列大于0，则使用此列的值。
参与度平均值： “ engagement_heepsy”列和“ engagement_ninjaoutreach”列以及“ engagement_hypeauditor”列的平均值，但前提是所有列均大于0。如果只有两列都大于0，请使用这两列的平均值。如果只有一列大于0，请使用此列的值。
follower_country_total： followers_average * follower_country_share
follower_country_engaged： followers_country_total *参与度平均
所有生成的列都应该存储为非虚拟的吗？
我们如何创建一个INSERT查询，该查询将执行以下操作：
对于username中的每个HypeAuditor，使用表Kombiniert中的以下数据创建一行：
https://docs.google.com/spreadsheets/d/1qU0WaExjg8cCsA3cdDvKf3UqdLxqXKw_8QnDRLvJwMA/edit?usp=sharing吗？
答案 0 :(得分：0)
好的，我假设每个用户名上都有一个用户名联接和一个记录。
INSERT INTO Kombiniert
(username, fullname, followers_heepsy, followers_ninjaoutreach, followers_average, engagement_heepsy, engagement_ninjaoutreach, engagement_hypeauditor, engagement_average, city, state, country, category1, category2, category3, category4, category5, category6, follower_interest1, follower_interest1_share, follower_interest2, follower_interest2_share, follower_interest3, follower_interest3_share, follower_country, follower_country_share, follower_country_total, follower_country_engaged)
Select bb.*, follower_country_total*engagement_average as follower_country_engaged from
(
Select aa.*, followers_average*follower_country_share as follower_country_total from
(
select
h.username,
nj.fullname,
hy.followers as followers_heepsy,
nj.followers as followers_ninjaoutreach,
case when (hy.followers=0 or hy.followers is null) and nj.followers>0 then nj.followers
when hy.followers>0 and (nj.followers=0 or nj.followers is null) then hy.followers
else (hy.followers+nj.followers)/2 end as followers_average,
hy.engagement/100 as engagement_heepsy,
nj.engagement/100 as engagement_ninjaoutreach,
h.engagement/100 as engagement_hypeauditor,
case when (hy.engagement/100=0 or hy.engagement is null) and (nj.engagement/100=0 or nj.engagement is null) and h.engagement/100>0 then h.engagement/100
when (hy.engagement/100=0 or hy.engagement is null) and nj.engagement/100>0 and (h.engagement/100=0 or h.engagement is null) then nj.engagement/100
when hy.engagement/100>0 and (nj.engagement/100=0 or nj.engagement is null) and (h.engagement/100=0 or h.engagement is null) then hy.engagement/100
when (hy.engagement/100=0 or hy.engagement is null) and nj.engagement/100>0 and h.engagement/100>0 then (h.engagement/100+nj.engagement/100)/2
when hy.engagement/100>0 and nj.engagement/100>0 and (h.engagement/100=0 or h.engagement is null) then (hy.engagement/100+nj.engagement/100)/2
when hy.engagement/100>0 and (nj.engagement/100=0 or nj.engagement is null) and h.engagement/100>0 then (h.engagement/100+nj.engagement/100)/2
else (hy.engagement/100+nj.engagement/100+h.engagement/100)/3 end as engagement_average,
nj.city,
nj.state,
nj.country ,
nj.category_1,
nj.category_2,
nj.category_3,
nj.category_4,
nj.category_5,
nj.category_6,
h.interest1,
h.Interest1_percentage/100 as follower_interest_share1,
h.interest2,
h.Interest2_percentage/100 as follower_interest_share2,
h.interest3,
h.Interest3_percentage/100 as follower_interest_share3,
h.country as follower_country,
h.country_percentage/100 as follower_country_share
from HypeAuditor h
left join Heepsy hy on h.username = hy.username
left join NinjaOutreach nj on nj.username=h.username
) aa
) bb
答案 1 :(得分：0)
我已经处理了@ianic的答案，并得出了以下结果：
INSERT INTO Kombiniert
(username, fullname, followers_heepsy, followers_ninjaoutreach, followers_average, engagement_heepsy, engagement_ninjaoutreach, engagement_hypeauditor, engagement_average, city, state, country, category1, category2, category3, category4, category5, category6, follower_interest1, follower_interest1_share, follower_interest2, follower_interest2_share, follower_interest3, follower_interest3_share, follower_country, follower_country_share, follower_country_total, follower_country_engaged)
Select bb.*, follower_country_total*engagement_average as follower_country_engaged from
(
Select aa.*, followers_average*follower_country_share as follower_country_total from
(
select
h.username,
nj.fullname,
hy.followers as followers_heepsy,
nj.followers as followers_ninjaoutreach,
case when hy.followers=0 and nj.followers>0 then nj.followers
when hy.followers>0 and nj.followers=0 then hy.followers
else (hy.followers+nj.followers)/2 end as followers_average,
hy.engagement/100 as engagement_heepsy,
nj.engagement/100 as engagement_ninjaoutreach,
h.engagement/100 as engagement_hypeauditor,
case when hy.engagement/100=0 and nj.engagement/100=0 and h.engagement/100>0 then h.engagement/100
when hy.engagement/100=0 and nj.engagement/100>0 and h.engagement/100=0 then nj.engagement/100
when hy.engagement/100>0 and nj.engagement/100=0 and h.engagement/100=0 then hy.engagement/100
when hy.engagement/100=0 and nj.engagement/100>0 and h.engagement/100>0 then (h.engagement/100+nj.engagement/100)/2
when hy.engagement/100>0 and nj.engagement/100>0 and h.engagement/100=0 then (hy.engagement/100+nj.engagement/100)/2
when hy.engagement/100>0 and nj.engagement/100=0 and h.engagement/100>0 then (h.engagement/100+nj.engagement/100)/2
else (hy.engagement/100+nj.engagement/100+h.engagement/100)/3 end as engagement_average,
nj.city,
nj.state,
nj.country ,
nj.category_1,
nj.category_2,
nj.category_3,
nj.category_4,
nj.category_5,
nj.category_6,
h.interest1,
h.Interest1_percentage/100 as follower_interest_share1,
h.interest2,
h.Interest2_percentage/100 as follower_interest_share2,
h.interest3,
h.Interest3_percentage/100 as follower_interest_share3,
h.country as follower_country,
h.country_percentage/100 as follower_country_share
from HypeAuditor h
left join Heepsy hy on h.username = hy.username
left join NinjaOutreach nj on nj.username=h.username
) aa
) bb
到目前为止，它工作正常，除了以下几点：
HypeAuditor中有用户名，仅在表Heepsy或NinjaOutreach中存在。如果是这种情况，则可以在此特定表的列中插入NULL，到目前为止还可以，但是两种计算平均值的情况不起作用。
如何修改案例以使其在这种情况下也能正常工作？
答案 2 :(得分：0)
只需借助@ianic很棒的查询找到最终答案！非常感谢！
这里是：
INSERT INTO Kombiniert
(username, fullname, followers_heepsy, followers_ninjaoutreach, followers_average, engagement_heepsy, engagement_ninjaoutreach, engagement_hypeauditor, engagement_average, city, state, country, category1, category2, category3, category4, category5, category6, follower_interest1, follower_interest1_share, follower_interest2, follower_interest2_share, follower_interest3, follower_interest3_share, follower_country, follower_country_share, follower_country_total, follower_country_engaged)
Select bb.*, follower_country_total*engagement_average as follower_country_engaged from
(
Select aa.*, followers_average*follower_country_share as follower_country_total from
(
select
h.username,
nj.fullname,
hy.followers as followers_heepsy,
nj.followers as followers_ninjaoutreach,
case when hy.followers IS NULL AND nj.followers>0 THEN nj.followers
when hy.followers>0 AND nj.followers IS NULL THEN hy.followers
else (hy.followers+nj.followers)/2 end as followers_average,
hy.engagement/100 as engagement_heepsy,
nj.engagement/100 as engagement_ninjaoutreach,
h.engagement/100 as engagement_hypeauditor,
case when hy.engagement IS NULL AND nj.engagement IS NULL AND h.engagement>0 THEN h.engagement/100
when hy.engagement IS NULL AND nj.engagement>0 AND h.engagement IS NULL THEN nj.engagement/100
when hy.engagement>0 AND nj.engagement IS NULL AND h.engagement IS NULL THEN hy.engagement/100
when hy.engagement IS NULL AND nj.engagement>0 AND h.engagement>0 THEN (h.engagement/100+nj.engagement/100)/2
when hy.engagement>0 AND nj.engagement>0 AND h.engagement IS NULL THEN (hy.engagement/100+nj.engagement/100)/2
when hy.engagement>0 AND nj.engagement IS NULL AND h.engagement>0 THEN (h.engagement/100+hy.engagement/100)/2
else (hy.engagement/100+nj.engagement/100+h.engagement/100)/3 end as engagement_average,
nj.city,
nj.state,
nj.country ,
nj.category_1,
nj.category_2,
nj.category_3,
nj.category_4,
nj.category_5,
nj.category_6,
h.interest1,
h.Interest1_percentage/100 as follower_interest_share1,
h.interest2,
h.Interest2_percentage/100 as follower_interest_share2,
h.interest3,
h.Interest3_percentage/100 as follower_interest_share3,
h.country as follower_country,
h.country_percentage/100 as follower_country_share
from HypeAuditor h
left join Heepsy hy on h.username = hy.username
left join NinjaOutreach nj on nj.username=h.username
) aa
) bb