SQL查询返回重复记录

Question

该查询返回两次每条记录。例如，'SpCall'字段是主键，查询返回：

我错过了什么吗？

QUERY：

SELECT CONVERT(varchar(10),BusinessRevenue.Entrance_Date,103) as
       analistEnterance,Teams.DivisionName, Teams.DepartmentManager, 
       BusinessRevenue.Team_Name, BusinessRevenue.Account_Manager,
       BusinessRevenue.Forigen_Infra_Count,BusinessRevenue.Partner_Infra_Count,
       BusinessRevenue.Networks_Adsl_Count,BusinessRevenue.Pri_Or_Siptopri,BusinessRevenue.SIP,
       BusinessRevenue.Centrex,BusinessRevenue.Hosting , BusinessRevenue.Vps_Server,
       BusinessRevenue.Mabal,BusinessRevenue.Equipment_Income, BusinessRevenue.SpCall
FROM BusinessRevenue LEFT JOIN Teams ON BusinessRevenue.Team_Name=Teams.TeamName
WHERE
   BusinessRevenue.SpCall IS NOT NULL 
   AND BusinessRevenue.Entrance_Year =2016
   AND BusinessRevenue.Entrance_Date <='30/06/2016'
   AND BusinessRevenue.Entrance_Date >='01/06/2016'
   AND BusinessRevenue.Team_Name NOT IN('xxx','yyy') 

非常感谢你的时间和考虑！

Answer 1

你应该尝试使用＆＃34; Teams＆＃34;的主键进行左连接。表。 正如您所写，＆＃34; BusinessRevenue.SpCall＆＃34;是＆＃34; BusinessRevenue＆＃34;的主键。表，但正如你做左边的＆＃34; BusinessRevenue＆＃34;使用＆＃34; TeamName＆＃34;专栏＆＃34;团队＆＃34;表，可能超过一行＆＃34;团队＆＃34;与＆＃34; BusinessRevenue.Team_Name＆＃34;匹配，因此SpCall不再是结果表的主键。

Answer 2

尝试使用SELECT DISTINCT，这将删除重复的行。