Means to export a varbinary(max) column from the database to disk

  • I'm working with msdb.dbo.sysmail_attachments

    I'm trying to write a stored proc that will take failed messages with attachments, and resend them.

    Since I don't know a means to reflag a message to be resent (changing the sent_status to 0 in sysmail_mailitems doesn't seem to do it), and we had a mail server problem that caused a bunch of messages queued up on the sql server to fail, I want to resend them.

    Some of these messages have files attached. I was trying to export the files to disk via

    SET @sql = 'bcp "SELECT attachment from msdb.dbo.sysmail_attachments WHERE mailitem_id = ' + CAST(@mailitem_id AS VARCHAR) + '" queryout "'

    + CAST(@filename AS VARCHAR(260))

    + '" -T -n -S <servername>'

    EXEC xp_cmdshell

    @sql

    But while bcp puts out the files, they aren't exactly correct (for instance, rtf files open as text files with all the formatting commands being there to see). I realize if I had a format file, I could use that, but at present I have at least 30 different file types sitting in there, and I don't have format files for any of them.

    Is there a simple way to have SQL export the varbinary(max) column as just a binary blob to disk that, if I were to double click it, would be readable by the application associated with it?



    --Mark Tassin
    MCITP - SQL Server DBA
    Proud member of the Anti-RBAR alliance.
    For help with Performance click this link[/url]
    For tips on how to post your problems[/url]

  • What happens if you have a cursor step through the rows in sys_mail tables that you need, and call sp_send_dbmail using the values from that table?

    I've done that before, but not with attachments.

    - Gus "GSquared", RSVP, OODA, MAP, NMVP, FAQ, SAT, SQL, DNA, RNA, UOI, IOU, AM, PM, AD, BC, BCE, USA, UN, CF, ROFL, LOL, ETC
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    "Nobody knows the age of the human race, but everyone agrees it's old enough to know better." - Anon

  • GSquared (1/18/2012)


    What happens if you have a cursor step through the rows in sys_mail tables that you need, and call sp_send_dbmail using the values from that table?

    I've done that before, but not with attachments.

    Actually I had a stored proc that did that already

    but the attachments included things like vacation sign-off forms and other bits and pieces....

    I finally came up with this

    CREATE PROCEDURE [dbo].[sysmail_resend_failed2] @mail_id INT = NULL

    AS

    BEGIN

    SET NOCOUNT ON

    DECLARE @sql VARCHAR(8000)

    DECLARE SYSMAIL_LOG_RESEND_CURSOR CURSOR READ_ONLY

    FOR

    SELECT DISTINCT

    l.mailitem_id,

    p.name,

    m.recipients,

    m.subject,

    m.body_format,

    m.body,

    a.filename,

    a.attachment

    FROM

    msdb.dbo.sysmail_log l

    JOIN msdb.dbo.sysmail_mailitems m ON m.mailitem_id = l.mailitem_id

    JOIN msdb.dbo.sysmail_profile p ON p.profile_id = m.profile_id

    LEFT JOIN msdb.dbo.sysmail_attachments a ON m.mailitem_id = a.mailitem_id

    WHERE

    l.event_type = 3

    AND m.sent_status = 2

    AND (l.mailitem_id = @mail_id

    OR @mail_id IS NULL)

    ORDER BY

    l.mailitem_id

    OPEN SYSMAIL_LOG_RESEND_CURSOR

    WHILE (1 = 1)

    BEGIN

    DECLARE

    @mailitem_id INT,

    @profile_name NVARCHAR(128),

    @recipients VARCHAR(MAX),

    @subject NVARCHAR(255),

    @body_format VARCHAR(20),

    @body NVARCHAR(MAX),

    @filename NVARCHAR(260),

    @attachment VARBINARY(MAX)

    FETCH NEXT FROM SYSMAIL_LOG_RESEND_CURSOR INTO @mailitem_id,

    @profile_name,@recipients,@subject,@body_format,@body,

    @filename,@attachment

    IF NOT @@FETCH_STATUS = 0

    BEGIN

    BREAK

    END

    PRINT CONVERT(VARCHAR,GETDATE(),121) + CHAR(9)

    + CONVERT(VARCHAR,@mailitem_id) + CHAR(9) + @recipients

    IF @filename IS NOT NULL

    BEGIN

    SET @sql = 'bcp "SELECT attachment from msdb.dbo.sysmail_attachments WHERE mailitem_id = ' + CAST(@mailitem_id AS VARCHAR) + '" queryout "'

    + CAST(@filename AS VARCHAR(260))

    + '" -T -S SQLSERVER -f C:\export.fmt'

    EXEC xp_cmdshell

    @sql

    IF DATALENGTH(@attachment) < 24000000

    EXEC msdb.dbo.sp_send_dbmail

    @profile_name = @profile_name,

    @recipients = @recipients,

    @subject = @subject,

    @body_format = @body_format,

    @body = @body,

    @file_attachments = @filename

    ELSE

    BEGIN

    SET @body = 'This email had an attachment, but the size of the attachment exceeds the 25 MB file size limit. '

    + CHAR(10) + CHAR(13) + @body

    EXEC msdb.dbo.sp_send_dbmail

    @profile_name = @profile_name,

    @recipients = @recipients,

    @subject = @subject,

    @body_format = @body_format,

    @body = @body

    END

    END

    ELSE

    EXEC msdb.dbo.sp_send_dbmail

    @profile_name = @profile_name,

    @recipients = @recipients,

    @subject = @subject,

    @body_format = @body_format,

    @body = @body

    UPDATE

    msdb.dbo.sysmail_mailitems

    SET

    sent_status = 1

    WHERE

    mailitem_id = @mailitem_id

    END

    CLOSE SYSMAIL_LOG_RESEND_CURSOR

    DEALLOCATE SYSMAIL_LOG_RESEND_CURSOR

    END

    The Format file (which is a general purpose format file that seems to work for everything is

    10.0

    1

    1 SQLBINARY 0 0 "" 1 attachment ""



    --Mark Tassin
    MCITP - SQL Server DBA
    Proud member of the Anti-RBAR alliance.
    For help with Performance click this link[/url]
    For tips on how to post your problems[/url]

  • I'd like to point out that this is just a modification to the stored proc that somebody else put out there a while ago

    http://www.codekeep.net/snippets/41a15075-29ea-4d7d-bb9f-6bd2eec45807.aspx



    --Mark Tassin
    MCITP - SQL Server DBA
    Proud member of the Anti-RBAR alliance.
    For help with Performance click this link[/url]
    For tips on how to post your problems[/url]

  • Take a look at the discussion here: http://social.msdn.microsoft.com/Forums/en-US/transactsql/thread/29f30130-3a64-4b91-86b3-5fa09dbc4220

    Does that help?

    - Gus "GSquared", RSVP, OODA, MAP, NMVP, FAQ, SAT, SQL, DNA, RNA, UOI, IOU, AM, PM, AD, BC, BCE, USA, UN, CF, ROFL, LOL, ETC
    Property of The Thread

    "Nobody knows the age of the human race, but everyone agrees it's old enough to know better." - Anon

  • I had actually read that already, thanks!

    No the SP I have plus the format file above actually works.... Up until then I had been trying to get by without a format file for BCP... once I gave in and made the format file... as above, it's a general purpose file that works to export any attachment of any file type.

    Or at least it's worked correctly with

    rtf

    doc

    xls

    txt

    and

    zip

    files



    --Mark Tassin
    MCITP - SQL Server DBA
    Proud member of the Anti-RBAR alliance.
    For help with Performance click this link[/url]
    For tips on how to post your problems[/url]

  • Cool biz.

    - Gus "GSquared", RSVP, OODA, MAP, NMVP, FAQ, SAT, SQL, DNA, RNA, UOI, IOU, AM, PM, AD, BC, BCE, USA, UN, CF, ROFL, LOL, ETC
    Property of The Thread

    "Nobody knows the age of the human race, but everyone agrees it's old enough to know better." - Anon

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