动态SQL从目录加载图像

时间:2009-07-09 19:11:01

标签: sql dynamic insert

这是新手,非常困难!我正在尝试使用以下代码从目录将图像加载到数据库中。

当我执行SP时,我得到以下表格,包括我所包含的印刷语句;

USE [store]
GO
DROP PROCEDURE [dbo].[insert2img]
/****** Object:  StoredProcedure [dbo].[insert2img]    Script Date: 07/08/2009 15:36:15 ******/
SET ANSI_NULLS ON
GO

SET QUOTED_IDENTIFIER ON
GO


Create PROC [dbo].[insert2img]
as
Begin
   Declare @img1 as varbinary(max)
    Declare @dircmd as varchar(max)
             DECLARE @filename varchar(100)
  DECLARE @filepath varchar(100)
  DECLARE @maxRowID int
   DECLARE @count int
  DECLARE @tempXMLFileName table (RowId int identity(1,1), name varchar(100))
            Declare @sql as varchar(max)
        Set @count = 1 
        Set @dircmd = 'MASTER..XP_CMDSHELL "dir/b '+ 'C:\Images\*.*"'


    INSERT
      @tempXMLFileName exec (@dircmd)
        SET @maxRowID = (SELECT max(RowId) FROM @tempXMLFileName)
WHILE @count <= @maxRowID
 BEGIN
          SET @filename = (SELECT name FROM  @tempXMLFileName WHERE [RowId] = @count)
          Print @filepath
          Set @filepath = 'C:\Images\'+@filename
                Set @sql = 'Insert into dbo.aaaimg (sno,imgdate,imgname,img)
                            Select '' @count'',getdate(),''Image'',
                            BulkColumn from Openrowset(Bulk ''' + @filepath + ''',Single_Blob) as tt  '                       
        print @sql
        Print @count

        Exec (@sql)

        Set @filepath=' ' 
        print @filepath
        Set @count = @count + 1 

end
end

下面列出了使用一些打印语句执行SP时的输出;

Insert into dbo.aaaimg (sno,imgdate,imgname,img)
                            Select ' @count',getdate(),'Image',
                            BulkColumn from Openrowset(Bulk 'C:\Images\n0501.jpg', Single_Blob) as tt  
1

(1 row(s) affected)

我的问题是我试图将@count的值插入到db中,但是我最终得到了db中的实际单词@count而不是值。我认为这是与分隔符有关,但我不能正确组合。

谢谢,

詹姆斯。

1 个答案:

答案 0 :(得分:1)

您需要将@count变量连接到@sql变量,如下所示:

Set @sql = 'Insert into dbo.aaaimg (sno,imgdate,imgname,img)
Select ' + CAST(@count AS VARCHAR) + ',getdate(),''Image'',
BulkColumn from Openrowset(Bulk ''' + @filepath + ''',Single_Blob) as tt '

话虽如此,我已经提出不建议在SQL Server本身存储图像的观点。最好在db中存储图像的路径而不是图像本身。