mysql - 我需要连接 2 个表，并在给定的任何列与其他表上的相应列匹配时获取结果

Question

我有 2 个 MySql 表有一些相似的列(存储相同类型的数据)

示例 如果tableA有一些字段为 email , phone , cellphone , id tableB还有email , phone , mobile , id等等

我想从表A where email = email or phone=phone or mobile=cellphone or id=id中选择所有用户

但是两个表中的数据都太大>每个表100万条记录。

我们能得到的最好的 Sql 查询是什么？

我正在使用的是

SELECT LN.LEADS360ID ,LN.fundingDate,LN.closedDate  
FROM fsbcorploan.loan  LN inner JOIN fsbcorponline.leads360leads LD ON   
LD.RefId  = LN.LEADS360ID  OR  
LD.Email  = LN.borrower_email OR   
LD.CellPhone = LN.borrower_home_phone OR  
LD.CellPhone = LN.borrower_cell_phone OR  
LD.DayPhone = LN.borrower_home_phone OR  
LD.DayPhone = LN.borrower_cell_phone OR  
LD.EveningPhone = LN.borrower_home_phone OR  
LD.EveningPhone = LN.borrower_cell_phone  
WHERE  dateAdded between '11/01/2012 05:10:00' and '12/11/2012 05:10:00'

执行需要13-15秒

Answer 1

尝试一下这是否更快...可能不会，但值得一试。

SELECT LN.LEADS360ID ,LN.fundingDate,LN.closedDate  
FROM fsbcorploan.loan  LN 
where dateAdded between '11/01/2012 05:10:00' and '12/11/2012 05:10:00'
and exists (
  select 1 from fsbcorponline.leads360leads LD
  where LD.RefId  = LN.LEADS360ID
    OR LD.Email  = LN.borrower_email
    OR LD.CellPhone = LN.borrower_home_phone
    OR LD.CellPhone = LN.borrower_cell_phone 
    OR LD.DayPhone = LN.borrower_home_phone
    OR LD.DayPhone = LN.borrower_cell_phone
    OR LD.EveningPhone = LN.borrower_home_phone
    OR LD.EveningPhone = LN.borrower_cell_phone)

如果确实没有解决办法，您可以使用某种可以预先计算的“找到匹配”计算列。您如何执行此操作将取决于此数据更改的频率。