多表sql联接中的Where子句

桌子

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上面编写的sql join语句中的where子句似乎无效，因为TypeID的某些值返回不完整的数据，而其他值则根本不返回行。我该如何着手修复此问题？

y重复一个条件

SELECT  
    LocalBussiness.BusinessName, Address.Address, Address.Postcode, 
    Area.AreaName, Area.Region, LocalBusiness.OfficialRating, 
    LocalBusiness.min_price, LocalBusiness_max_price, 
    Phone.description, Phone.PhoneNo, 
    Email.Description, Email.email_address, 
    LocalBusiness.Web_address
FROM
    LocalBusiness 
JOIN 
    Address ON LocalBusiness.BusinessID = Address.BusinessID
JOIN 
    Area ON Address.AreaID = Area.AreaID 
         AND LocalBusiness.BusinessID = Address.BusinessID
JOIN 
    Phone ON Phone.BusinessID = LocalBusiness.BusinessID
JOIN 
    Email ON Email.BusinessID = LocalBusiness.BusinessID
WHERE 
    TypeID = '1'
ORDER BY 
    LocalBusiness.BusinessName ASC;

尽量避免这种重复

AND LocalBusiness.BusinessID=Address.BusinessID in JOIN Area

---

否则，请检查数据的一致性。

y重复一个条件

SELECT  
    LocalBussiness.BusinessName, Address.Address, Address.Postcode, 
    Area.AreaName, Area.Region, LocalBusiness.OfficialRating, 
    LocalBusiness.min_price, LocalBusiness_max_price, 
    Phone.description, Phone.PhoneNo, 
    Email.Description, Email.email_address, 
    LocalBusiness.Web_address
FROM
    LocalBusiness 
JOIN 
    Address ON LocalBusiness.BusinessID = Address.BusinessID
JOIN 
    Area ON Address.AreaID = Area.AreaID 
         AND LocalBusiness.BusinessID = Address.BusinessID
JOIN 
    Phone ON Phone.BusinessID = LocalBusiness.BusinessID
JOIN 
    Email ON Email.BusinessID = LocalBusiness.BusinessID
WHERE 
    TypeID = '1'
ORDER BY 
    LocalBusiness.BusinessName ASC;

尽量避免这种重复

AND LocalBusiness.BusinessID=Address.BusinessID in JOIN Area

---

否则，请检查数据的一致性。

请添加示例数据和预期输出。我猜并非所有企业都有地址、电话和电子邮件？如果是这样的话，您可能希望进行外部联接。这是用于哪个RDBMS的？请添加一个标记，以指定您使用的是

mysql

、

postgresql

、

sql server

、

oracle

还是

db2

——或者完全是其他什么。请添加示例数据和预期输出。我猜不是所有的企业都有地址、电话和电子邮件？如果是这样的话，您可能希望进行外部联接。这是用于哪个RDBMS的？请添加一个标记，以指定您使用的是

mysql

、

postgresql

、

sqlserver

、

oracle

还是

db2

——或者其他完全不同的东西。