这是我的情况。我知道必须有一个简单的答案,但我只是不熟悉 TSQL 知道如何。下面我有一个存储过程的主要查询,它选择了我需要的数据。到目前为止,我一直在工作,除了我需要调用一个名为 GetRecordMediaById 的单独存储过程,在其中我将 PhotoId 列中的 Id 提供给它,然后它从适当的数据库中选择 BLOB 数据,然后该数据需要在最后成为它自己的列查询或替换原来的 PhotoId 列。
我不知道该怎么做。我试过实现临时表,但我什至无法让它执行。
这是我的代码:
ALTER PROCEDURE [dbo].[GetRollCallData]
@Ids VARCHAR(255),
@LexiconId INT,
@UUID UNIQUEIDENTIFIER,
@ReadOnly INT
AS
DECLARE @TableCode INT
SET @TableCode = 58
EXEC InsertInSelectionCache @Ids, @UUID, @TableCode, 0
WITH DOACTE AS(
SELECT ROW_NUMBER() OVER(PARTITION BY [File].Id ORDER BY CustomRecordsetId DESC) AS RowNumber, [File].*, FileType2Lexicon.Label as FileTypeLabel, [People].DefaultPhone, [People].InvertedName, CustomFieldValue.Value as DateofArrest
FROM FileType2Lexicon, SelectionCache, [People], [File]
INNER JOIN [CustomRecordSet]
ON [CustomRecordset].RecordId = [File].Id
INNER JOIN CustomFieldValue
ON [CustomRecordset].Id = CustomFieldValue.CustomRecordsetId
INNER JOIN [CustomField2Lexicon]
ON CustomField2Lexicon.CustomFieldId = CustomFieldValue.CustomFieldId
WHERE [File].Id = SelectionCache.RecordId
AND SelectionCache.UUID = @UUID
AND SelectionCache.TableCode = @TableCode -- this is the code for File table
AND [File].Id <> 0
AND [File].FileTypeId = FileType2Lexicon.FileTypeId
AND FileType2Lexicon.LexiconId = @LexiconId
AND [File].ClientIdString = [People].ClientIdString
AND CustomFieldValue.Value <> ''
AND CustomField2Lexicon.Label = 'Date of Arrest'),
PHOTOCTE AS(
SELECT [File].Id, CustomFieldValue.Value as PhotoId
FROM FileType2Lexicon, SelectionCache, [People], [File]
INNER JOIN [CustomRecordSet]
ON [CustomRecordset].RecordId = [File].Id
INNER JOIN CustomFieldValue
ON [CustomRecordset].Id = CustomFieldValue.CustomRecordsetId
INNER JOIN [CustomField2Lexicon]
ON CustomField2Lexicon.CustomFieldId = CustomFieldValue.CustomFieldId
WHERE [File].Id = SelectionCache.RecordId
AND SelectionCache.UUID = @UUID
AND SelectionCache.TableCode = @TableCode -- this is the code for File table
AND [File].Id <> 0
AND [File].FileTypeId = FileType2Lexicon.FileTypeId
AND FileType2Lexicon.LexiconId = @LexiconId
AND [File].ClientIdString = [People].ClientIdString
AND CustomFieldValue.Value <> ''
AND CustomField2Lexicon.Label = 'Booking Photo')
SELECT DOACTE.*, PHOTOCTE.PhotoId
FROM DOACTE
INNER JOIN
PHOTOCTE
ON DOACTE.Id = PHOTOCTE.Id
WHERE DOACTE.RowNumber = 1
编辑:
我的解决方案是创建一个标量函数来解析 BLOB 数据库中的 Id 并返回 BLOB 数据。
SELECT DOACTE.*, dbo.GetImagebyId(PHOTOCTE.PhotoId) as Photo,
FROM DOACTE
INNER JOIN
PHOTOCTE
ON DOACTE.Id = PhotoCTE.Id
WHERE DOACTE.RowNumber = 1