Question

好的我有3个表在指定的键上链接

account (accountnumber)
package (packageid, accountnumber)
hostdomain (packageid)

我需要获得只有1个域的所有帐户，这是我目前为止的查询，但它返回所有域。我做错了什么？

select 
    domainname,
    resellerAccountNumber,
    a.accountnumber,
    companyname,
    firstname,
    lastname,
    primaryemail,
    HomePhone
    workphone
FROM account a 
INNER JOIN Package p on p.AccountNumber = a.AccountNumber
INNER JOIN hostdomain hd ON HD.packageId = p.packageID 
GROUP BY 
    domainname, reselleraccountnumber, a.accountnumber, companyname, 
    firstname,lastname,primaryemail, HomePhone,workphone, domainaliasId   
HAVING COUNT(domainname) =1 
    AND domainAliasID = 0 
    AND ResellerAccountNumber in ('','LNC','CFMXHOSTING')

Answer 1

在HAVING子句中仅使用聚合：

WHERE
    domainAliasID = 0 
    AND ResellerAccountNumber in ('','LNC','CFMXHOSTING')
GROUP BY
    domainname, reselleraccountnumber, a.accountnumber,
    companyname,firstname,lastname,primaryemail, HomePhone,
    workphone, domainaliasId   
HAVING COUNT(domainname) = 1

Answer 2

您正在通过太多字段进行聚合。我想你想要这样的东西：

select min(domainname) as domainname, resellerAccountNumber,
       a.accountnumber, companyname, firstname, lastname, primaryemail,
       HomePhone, workphone
FROM account a INNER JOIN
     Package p
     on p.AccountNumber = a.AccountNumber INNER JOIN
     hostdomain hd ON HD.packageId = p.packageID 
GROUP BY reselleraccountnumber, a.accountnumber, companyname, firstname,
         lastname, primaryemail, HomePhone, workphone, domainaliasId   
HAVING COUNT(domainname) = 1 AND
       domainAliasID = 0 AND
       ResellerAccountNumber in ('','LNC','CFMXHOSTING');

我从domainname中删除了group by（并进行了相关更改）。我不知道如何处理domainaliasid，因为您的问题没有提及有关过滤数据的任何内容，只是汇总了数据。您可能希望将其删除以获得所需内容。

TSQL限制记录HAVING子句中count（）= 1的位置

2 个答案: