Looking For Some Magic
May 16, 2006
... well, perhaps some sophistication. The setup:
Server A publishes to server B via transactional replication. Server A is to be shut down while some electrical work is done. So we fail over to server B for a couple days. My underpowered brain says to shut down replication, possibly fail over well in advance of the power outage.
Then, when the electrical work is done and server A is restarted: 1) stop work on server B, 2) ?copy? the database on B to A (I suppose after deleting it from A), and 3) redoing the replication from scratch.
Can anyone recommend a better process?
I am very gratefull for any enlightenment.
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Jan 1, 2004
Hi,
I want to know about magic table in SQL Server. What is actually magic table?
I tried to find information through google but I didnt able to get sufficient information about it. Can any budy help me in this regard?
Thanx.
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Feb 23, 2004
Can any one tell me what are magic tables in sql server?
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Aug 26, 2007
I've been working with the Database Publishing Wizard and have found what I initially thought was a bug but have decided is a rather nasty "feature". Or am I missing something?
I have membership implemented in a live database. I took a backup and loaded it into a local database. I created a new table locally that is foreign-keyed off aspnet_roles, and added some data.
Using the Publishing Wizard for a partial deployment, I followed the steps which seem perfectly clear to script out ONLY the new table and its data. The screens provide a nice GUI for selecting specific database objects, and I carefully chose the one new table.
From good habits I looked at the script before deploying it. It drops and recreates aspnet_roles and aspnet_applications as well (and inserts the data from the development tables).
Presumably this is because of the foreign key relationships. But there's no need to do so. What if I or another developer had added in some roles to the live table in the meantime? This script would blow them away.
Am I missing an option with the Wizard that would script out only what is specified? I've tidied up the script (i.e. removed the undesirable sections) - but this seems to be a naughty wizard. Any thoughts?
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May 15, 2006
Okay, this is probably my own stupidity but here goes. I am trying to make a very rudimentary package. I've got a data flow that has a flat file source. This source has fields delimited by the | symbol. I give the fields in the flat file source names. The first field is always exactly 1 character. When I use the advanced editor to look at the fields' properties, I see the first field, called ProductLine, is considered to be of SSIS internal data type DT_STR with a length of 50. I change the 50 to 1 because that is as long as that field is.
No matter what I do, when I close the advanced editor and then open it again, the field length for ProductLine is again set to 50. The field is 1 long, not 50 long. How can I make the setting of 1 be retained? Nothing I do changes it. What is the point of allowing the length to be editable if the edit is not retained?
Thanks in advance,
SW
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Mar 11, 2008
Hello what does it mean ? Is it really posible in SQL Server ? If yes then How ?
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Oct 6, 2004
Hi folks,
I need to execute some kind of
select a,b,c into #inserted from inserted
a = int
b = varchar(50)
c = text
Easy so far. But I what I need is to find out whether the audited table contains text(or nText / image) columns or not. If it contains any text columns the statement should automatically be changed to
select a,b into #inserted from inserted
Remember that the trigger must be usable for any table in the database without manually entering the tables structure or the column names.
Best would be fetching the structure fropm the system views (INFORMATIONSCHEMES)
Any suggestions ?
Thanks a lot!
Stefan
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Oct 23, 2007
OK so now I'm setting up a trigger to email info to different people based on values INSERTed into one of my tables. I'm using an IF statement to determine who I'm giong to send the mail to, but I don't really understand how to include the data (parameters) in my message. Thanks for any help. Here's what I have so far.
Code Block
ALTER TRIGGER [smallin].[trig_test]
ON [smallin].[DATALIST]
AFTER INSERT
AS
declare @rc int,
@post bit,
@pre bit
SELECT @post = [POST], @pre = [PRE] FROM inserted
IF @post = 1
exec @rc = master.dbo.xp_smtp_sendmail
@FROM = N'ln.li@mydomain.com',
@FROM_NAME = N'Alert Mailer',
@TO = N's.mallin@mydomain.com',
@replyto = N'ln.li@mydomain.com',
@CC = N'',
@BCC = N'',
@priority = N'NORMAL',
@subject = N'This is post data',
@message = N'Goodbye MAPI and Outlook',
@messagefile = N'',
@type = N'text/plain',
@attachment = N'',
@attachments = N'',
@codepage = 0,
@server = N'exchange.mydomain.com'
ELSE IF @pre = 1
exec @rc = master.dbo.xp_smtp_sendmail
@FROM = N'ln.li@mydomain.com',
@FROM_NAME = N'Alert Mailer',
@TO = N's.mallin@mydomain.com',
@replyto = N'ln.li@mydomain.com',
@CC = N'',
@BCC = N'',
@priority = N'NORMAL',
@subject = N'This is pre data',
@message = N'Goodbye MAPI and Outlook',
@messagefile = N'',
@type = N'text/plain',
@attachment = N'',
@attachments = N'',
@codepage = 0,
@server = N'exchange.mydomain.com'
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Jan 25, 2007
I have the following code in an SSIS package and I get the following error:
Error: 0x0 at Unzip downloaded file, Boolean ReadGzipHeader(): Unable to decompress C:ETLPOSDataIngramWeeklyINVEN.zip; The magic number in GZip header is not correct. Make sure you are passing in a GZip stream.
Error: 0x4 at Unzip downloaded file: The Script returned a failure result.
Task failed: Unzip downloaded file
The zip file unzips perfectly using winzip utility, so that file is definitely not a problem here.
The code I am using in a script task is as follows:
' Microsoft SQL Server Integration Services Script Task
' Write scripts using Microsoft Visual Basic
' The ScriptMain class is the entry point of the Script Task.
Imports System
Imports System.Data
Imports System.Math
Imports Microsoft.SqlServer.Dts.Runtime
Imports System.IO
Imports System.Text
Imports System.IO.Compression
Public Class ScriptMain
' The execution engine calls this method when the task executes.
' To access the object model, use the Dts object. Connections, variables, events,
' and logging features are available as static members of the Dts class.
' Before returning from this method, set the value of Dts.TaskResult to indicate success or failure.
'
' To open Code and Text Editor Help, press F1.
' To open Object Browser, press Ctrl+Alt+J.
Public Sub Main()
'
' Add your code here
'
Dts.TaskResult = Dts.Results.Success
Dim success As Boolean = True
Dim workFilePath As String
workFilePath = Dts.Variables("zipFilePath").Value.ToString()
If File.Exists(workFilePath) Then
If Not workFilePath.EndsWith(".zip") Then
Dts.Events.FireInformation(0, "", workFilePath + " is not compressed; skipping decompression", Nothing, -1, True)
Return
End If
Dim uncompressedFileName As String
Dim bytes(Int16.MaxValue) As Byte
Dim n As Integer = 1
Try
uncompressedFileName = Dts.Variables("unCompressedFileName").Value.ToString()
Dts.Events.FireInformation(0, "", "decompressing " + workFilePath + " to " + uncompressedFileName, Nothing, -1, True)
Using writer As New FileStream(uncompressedFileName, FileMode.Create)
Using compressedStream As Stream = File.Open(workFilePath, FileMode.Open, FileAccess.Read, FileShare.None)
Using unzipper As New GZipStream(compressedStream, CompressionMode.Decompress)
Do Until n = 0
n = unzipper.Read(bytes, 0, bytes.Length)
writer.Write(bytes, 0, n)
Loop
unzipper.Close()
End Using
compressedStream.Close()
End Using
writer.Close()
End Using
Catch ex As Exception
Dts.Events.FireError(0, ex.TargetSite().ToString(), "Unable to decompress " + workFilePath + "; " + ex.Message, Nothing, -1)
success = False
Finally
If success = False And File.Exists(uncompressedFileName) Then
Dts.TaskResult = Dts.Results.Failure
File.Delete(uncompressedFileName)
End If
End Try
Else
Dts.Events.FireError(0, "", workFilePath + " does not exist", Nothing, -1)
Dts.TaskResult = Dts.Results.Failure
Return
End If
End Sub
End Class
Instead of the GZipStream do I have to use some other stream class for a zip file. Please let me know.
Thanks,
Monisha
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