僅在一列上不同

Question

我只想使用SQL Management Studio獲得不同的帳戶

SELECT DISTINCT [Account]
  ,[Opportunity Name]
  ,[LeadContact Email]
  ,[LeadContact Name]
  ,[LeadContact Status]
FROM NAME
 WHERE [Account Addr Country] LIKE '%US%'
 AND [LeadContact Name] NOT LIKE '%Test%'
ORDER BY [Account]

Answer 1

在SQL Server中，可以使用ROW_NUMBER() ：

SELECT Account, [Opportunity Name], [LeadContact Email],
      [LeadContact Name], [LeadContact Status]
FROM (SELECT n.*,
             ROW_NUMBER() OVER (PARTITION BY Account ORDER BY Account) as seqnum
      FROM NAME n
      WHERE [Account Addr Country] LIKE '%US%' AND
            [LeadContact Name] NOT LIKE '%Test%'
     ) n
WHERE seqnum = 1;

這將選擇一個不確定的行。 如果要特定的行（例如最早，最新，最大或最小），則可以調整ORDER BY子句。

Answer 2

我認為，最簡單的方法是以下請求：

    SELECT 
     [Account]
     ,[Opportunity Name]
     ,[LeadContact Email]
     ,[LeadContact Name]
     ,[LeadContact Status]
    FROM NAME n inner join (
      SELECT distinct [Account] FROM NAME 
      WHERE [Account Addr Country] LIKE '%US%'
      AND [LeadContact Name] NOT LIKE '%Test%' ORDER BY [Account]) n2
    on n.Account = n2.account

第一個內部請求檢索所有不同的帳戶，第二個內部請求檢索補充信息