Question

你好，正如我昨天所讨论的那样，从多个表中检索数据到

多个查询，但我有很多建议将表连接成一个查询。

实际上在这里我将多个表连接成一个查询，但我想检索数据

仅来自两个表T1是属性，T2是相关属性的图像。

我做了但它给出了一个我无法找到它的错误。

Error Massage : #1064 - You have an error in your SQL syntax; 
check the manual that 
corresponds to your MySQL server version for the right syntax to use near 'FROM       
properties, provinces, districts, pds, propertyimages WHERE Provinces.' 
at line 22



Here is the Query:

"SELECT 
    properties.PropertyID,
    properties.PropertyName,
    properties.PropertyType,
    properties.PropertyDealType,
    properties.PropertyRegion,
    properties.PrepostedPrice,
    properties.PricePerArea,
    properties.DealStatus,
    properties.MoreinfoDealGeneralInformation,
    properties.MoreInfoPropertyGeneralInformation,
    properties.CurrencyType,

    propertyimages.PropertyID,
    propertyimages.ImageName,
    propertyimages.ImagePath,

    Provinces.ProvinceName,
    districts.DistrictName,
    pds.PDName,

    FROM properties, provinces, districts, pds, propertyimages

    WHERE Provinces.ProvinceID=Properties.ProvinceID
    AND   districts.DistrictID=Properties.DistrictID
    AND   pds.PDID=properties.PDID
    AND   properties.PropertyID=propertyimages.PropertyID
    AND   ProvinceName= 'Kabul'
    AND   DistrictName='KabulCity'
    AND   PropertyDealType='For Rent'
    ORDER BY properties.PropertyID";

Answer 1

从

行中删除“，”

pds.PDName,

最好尝试加入任何两个表，如

FROM properties
JOIN provinces ON provinces.PropertyId = properties.provinceId

Answer 2

在From子句删除之前，您已离开,。在这里

pds.PDName

喜欢它：

districts.DistrictName,
pds.PDName

FROM properties, provinces, districts, pds, propertyimages

将多个表连接到一个查询中

2 个答案: