mysql - 如何在使用 mysql 的 select 中使用内部连接？

Question

我想在以下条件下从 mysql 数据库中获取记录

我有以下表格：

• 组织_表

  organizationId | organizationname
  

• 竞选表

  camp_id | camp_name | adv_id | organizationId
  

• 广告表

  adv_id | adv_name
  

• ad_display 表

  ad_displayId | adv_id | camp_id |
  

现在从 ad_display 表中我想获取这样的记录：

| adv_name | camp_name | organizationname

以WHERE条件为 where organizationId == ？

所以基本上我想要organization_id =的广告系列的广告列表？

注意：在 camapign 表中应该有相同 adv_id 的多个条目，并且在 ad_display 中应该有多个条目的相同 camp_id

Answer 1

试试这个：

SELECT ad.ad_displayId, a.adv_name, c.camp_name, o.organizationname 
FROM ad_display ad 
INNER JOIN advertise a ON ad.adv_id = a.adv_id 
INNER JOIN campaign c ON ad.camp_id = c.camp_id 
INNER JOIN organization o ON c.organizationId = o.organizationId 
WHERE o.organizationId = ?;

Answer 2

也许是这样的？

SELECT Distinct
  advertise.adv_name,
  campaign.camp_name,
  organization_.organizationname
FROM
  advertise inner join campaign
  on advertise.adv_id = campaign.adv_id
  inner join organization_
  on campaign.organizationID = organization_.organizationID
WHERE
  organization_.organizationID = 1

Answer 3

SELECT * FROM campaign
LEFT JOIN ad_display ON campaign.camp_id = ad_display.camp_id
LEFT JOIN advertise ON ad_display.adv_id = advertise.adv_id
WHERE campaign.organizationId = <?>

Answer 4

使用下面的代码

SELECT dv_name,
       camp_name,
       organizationname
FROM   organization
       inner join campaign
               ON organization.organizationid == campaign.organizationid
       left join advertise
              ON campaign.adv_id == advertise.adv_id
WHERE  condition =? ; 

Answer 5

SELECT  advertise.adv_name, 
        campaign.camp_name, 
        organization_Table.organizationname
FROM   ad_display 
    INNER JOIN advertise ON ad_display.adv_id = advertise.adv_id 
    INNER JOIN campaign ON ad_display.camp_id = campaign.camp_id 
    INNER JOIN organization_ Table ON campaign.organizationId = organization_Table.organizationId
    AND organization_Table.organizationId=?

Answer 6

SELECT batch_number,
       Count(receipt_number) AS tot_rec,
       Sum(amount)           AS tot_amount
FROM   receipt_header
GROUP  BY batch_number
UNION ALL
SELECT batch_number,
       Count(receipt_lines.receipt_number),
       Sum(receipt_lines.amount)
FROM   receipt_lines
       INNER JOIN receipt_header
               ON receipt_header.record_id = receipt_lines.header_record_id
GROUP  BY batch_number
ORDER  BY batch_number ASC;