Question

我有一个动态存储过程，它很长，所以我只提供导致错误的部分。

  SELECT  @sSql = @sSql + ' 
            animal.AnimalId,
            species.Code AS Species,
            breed.Code AS Breed ,
            country.CountryId AS CountryId ,
            country.Code AS CountryCode ,
            animal.Sex AS Sex , 
            animalRegistration.Identifier AS RegNo ,
            breed.Description + country.Code + animal.Sex + animalRegistration.Identifier AS FullRegNo,
            thePrefix.Prefix AS Prefix,
            animal.Name AS Name,
            thePrefix.Prefix + animal.Name AS FullName, 
            animal.Name AS EarTag1,
            animal.DateOfBirth as DateOfBirth ,
            0 as AnimalFlagCount'
           --isnull( Genomics.GetAnimalFlagCount( a.AnimalId,' + CAST(@IsCatalogSamples AS VARCHAR(2)) + ' ), 0) AS AnimalFlagCount '
            --a.EarTag1 
    SELECT  @sFrom = '  
         FROM dbo.Animal AS animal 
         LEFT JOIN dbo.Breed breed ON animal.BreedId = breed.BreedId
         LEFT JOIN dbo.Species species ON species.SpeciesId = breed.SpeciesId
         LEFT JOIN dbo.AnimalIdentity animalIdentity ON animalIdentity.AnimalId = animal.AnimalId
         LEFT JOIN dbo.AnimalIdentity animalRegistration ON animalRegistration.AnimalId = animal.AnimalId and  animalRegistration.IdentityTypeId = 2
         LEFT JOIN dbo.Country country ON animalIdentity.CountryId = country.CountryId
         LEFT JOIN dbo.AnimalPrefix animalPrefix ON animalPrefix.AnimalId = animal.AnimalId
         LEFT JOIN dbo.Prefix thePrefix ON thePrefix.PrefixId = animalPrefix.PrefixId 

        WHERE
        '

这将返回错误：

Msg 4104，Level 16，State 1，Line 10
  无法绑定多部分标识符“thePrefix.Prefix”。

Msg 4104，Level 16，State 1，Line 12
  无法绑定多部分标识符“thePrefix.Prefix”。

当我在另一个窗口中使用此确切语句创建查询时，它将返回out out：

  SELECT    
        animal.AnimalId,
        species.Code AS Species,
        breed.Code AS Breed ,
        country.CountryId AS CountryId ,
        country.Code AS CountryCode ,
        animal.Sex AS Sex , 
        animalRegistration.Identifier AS RegNo ,
        breed.Description + country.Code + animal.Sex + animalRegistration.Identifier AS FullRegNo,
        thePrefix.Prefix AS Prefix,
        animal.Name AS Name,
        thePrefix.Prefix + animal.Name AS FullName, 
        animal.Name AS EarTag1,
        animal.DateOfBirth as DateOfBirth ,
        0 as AnimalFlagCount
         FROM dbo.Animal AS animal 
         LEFT JOIN dbo.Breed breed ON animal.BreedId = breed.BreedId
         LEFT JOIN dbo.Species species ON species.SpeciesId = breed.SpeciesId
         LEFT JOIN dbo.AnimalIdentity animalIdentity ON animalIdentity.AnimalId = animal.AnimalId
         LEFT JOIN dbo.AnimalIdentity animalRegistration ON animalRegistration.AnimalId = animal.AnimalId and  animalRegistration.IdentityTypeId = 2
         LEFT JOIN dbo.Country country ON animalIdentity.CountryId = country.CountryId
         LEFT JOIN dbo.AnimalPrefix animalPrefix ON animalPrefix.AnimalId = animal.AnimalId
         LEFT JOIN dbo.Prefix thePrefix ON thePrefix.PrefixId = animalPrefix.PrefixId 
         where 
         animalRegistration.Identifier = '5573144'

有人能看出为什么这会造成问题吗？我意识到使用这么多代码可能无法做到，但我想也许我忽视了一些重要的事情。

谢谢，

Answer 1

在执行之前，您是否忘记将@sFrom连接到@sSql？尝试更改

SELECT @sFrom = ' FROM .....

到

SELECT @sSql = @sSql +  ' FROM .....

您还可以尝试插入要执行的sql的print语句，以确保执行您认为正在执行的操作。 ...

另外，@ sFrom声明为什么？也许它在最后一次加入之前被截断，因此错误？

希望有所帮助

SQL Server：'无法绑定' - 错误

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