SQL Server 2008 :: Recover Data In A Table - Restoring A Database Alongside Existing DB
Apr 17, 2015
I need to recover some data in a table but i'm not 100% sure the right way to do this safely.
I'll need to query the two tables to compare the before and after but how do i go about restoring/attaching the backup database to SQL without causing conflicts?
If I restore, I assume this would just overwrite which is obviously the worst thing that can happen. if i attach the backup, how does this affect the current live DB? how do i make sure that it's not getting accessed and mistaken for the live DB?
The SQL server is 2008 R2 running as a VM.
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Apr 17, 2015
I need to recover some data in a table but i'm not 100% sure the right way to do this safely.
I'll need to query the two tables to compare the before and after but how do i go about restoring/attaching the backup database to SQL without causing conflicts?
If I restore, i assume this would just overwrite which is obviously the worst thing that can happen. If i attach the backup, how does this affect the current live DB? how do i make sure that it's not getting accessed and mistaken for the live DB?
The SQL server is 2008 R2 running as a VM.
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Feb 20, 2015
I am restoring a database with 10yrs worth of data which have monthly partitions but i would like to keep only 5yrs of data after the restore is done, what is the best/faster approach to delete the 5yrs data without deleting the partitions as that may cause the db in accessible.
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Aug 13, 2007
Hi All,
I would like to restore database using RESTORE DATABASE ... REPLACE command.
If database exists already and has any open connections this command will fail.
I would like to close all existing connections to specific database before running RESTORE DATABASE ... REPLACE command.
I can do closing from Management Studio using checkbox "Close Existing Connection" when deleting database. Actually I need to do the same but from script.
Please advice me how to do it.
Thanks in advance,
Roman
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Aug 6, 2015
I want to restore a database (from an encrypted .bak file) - but *not* over the live original if you take my meaning. Encryption is the standard AES-256 that comes with Sql Server 2014 btw. I don't want the original touched/altered in any way. I would like to capture a success message if possible.I can extract the physical device name of the database in question using the following code:
SELECT physical_device_name, *
FROM msdb.dbo.backupmediafamily
WHERE media_set_id =(SELECT TOP 1 media_set_id
FROM msdb.dbo.backupset
WHERE database_name='MyDatabase'
AND type='D'
ORDER BY backup_start_date DESC)
I would like if the newly restored database was rename to something different than 'MyDatabase' (as shown above) and has different logs than the original. If possible, and capture a success message when restored.
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Aug 14, 2006
Hi all, I am working with SQL Server2000 and I have done a horrible thing here.
We here have an script that delete all data from all user tables of a database, and I run it in the master DATABASE.
As we don't made backups of this database, now somethings of the database aren't working.
Here is the script:
declare @table_name sysname
declare @alter_table_statement varchar(256)
declare @delete_statement varchar(256)
-- definindo o cursor...
declare table_name_cursor cursor local fast_forward for
select
name
from
sysobjects
where
xtype = 'U'
and
name <> 'dtproperties'
-- desligando os vÃnculos...
open table_name_cursor
fetch next from table_name_cursor into @table_name
select @alter_table_statement = 'alter table ' + ltrim(rtrim(@table_name)) + ' nocheck constraint all'
exec(@alter_table_statement)
while @@Fetch_Status = 0
begin
fetch next from table_name_cursor into @table_name
select @alter_table_statement = 'alter table ' + ltrim(rtrim(@table_name)) + ' nocheck constraint all'
exec(@alter_table_statement)
end
close table_name_cursor
open table_name_cursor
fetch next from table_name_cursor into @table_name
select @delete_statement = 'delete from ' + ltrim(rtrim(@table_name))
exec(@delete_statement)
while @@Fetch_Status = 0
begin
fetch next from table_name_cursor into @table_name
select @delete_statement = 'delete from ' + ltrim(rtrim(@table_name))
exec(@delete_statement)
end
close table_name_cursor
open table_name_cursor
fetch next from table_name_cursor into @table_name
select @alter_table_statement = 'alter table ' + ltrim(rtrim(@table_name)) + ' check constraint all'
exec(@alter_table_statement)
while @@Fetch_Status = 0
begin
fetch next from table_name_cursor into @table_name
select @alter_table_statement = 'alter table ' + ltrim(rtrim(@table_name)) + ' check constraint all'
exec(@alter_table_statement)
end
close table_name_cursor
deallocate table_name_cursor
I have tried to restore master table with the restore function, but it doesn't work. When I try to do this I received a message informing that it can't copy the data because one file was in use. The server was in a single user mode.
Is there anyway to recover the data that I have lost?
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Mar 4, 2015
Can we create the Partition on Existing Table?e.g Create table t ( col1 number(10,0), Col2 Varchar(10)) ;After the table Creation can we alter the table to partition the table.
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Feb 9, 2015
I have a scenario where I need to add a blank column to a table that is a publisher. This table contains over 100 million records. What is the best way to add the column? In the past where I had to make an update, it breaks replication because the update would take forever as jobs are continuously updating the table so replication can't catch up.
If I alter a table and add a column, would this column automatically get picked up in replication?
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Jul 6, 2015
I have a database with deployed CLR assembly on SQL 2008. I recently took a backup for the database and restored it on SQL 2012 server. Everything worked fine except very strange working of CLR assemblies functions.The result of the function is very odd. It manipulates the numeric string and return the result. It is returning very strange result on SQL 2012 as compared to SQL 2008.Example SQL 2008 ManipulateString('1234') returns 2345 On SQL 2012 the same call returns 1155.I am also trying to deploy the same assembly to SQL 2012 server database. I have successfully register the assembly, but the database do not list the exposed methods.
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Sep 21, 2015
I have some huge tables (think 200+GB for a single table) which are excellent candidates for sparse columns. The tables have many columns which are defined with decimal datatypes (13,2) with a large percentage of them (over 50% in most cases- some as much as 99%) being 0.00. Since this is very expensive in terms of storage my idea is to set all the 0.00 values equal to NULL then set them as sparse. Across 100 or so identical databases, I have 5 such tables, with 20-40 columns in each table.
1.) three steps for each column in each table in each db.
Step 1: update table to allow for nulls
Step 2: update tabe set column=null where column =0.00
Step 3 update table set sparse columns
2.)
Step 1: Create entirely new table with sparse column definitions
Step 2: copy entire table, transforming 0.00 to null for affected columns via SSIS
Step 3: drop original table, rename new table to original name
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Jan 25, 2011
I have a XML data passed on to the stored proc in the following format, and within the stored proc I am accessing the data of xml using the nodes() method
Here is an example of what i am doing
DECLARE @Participants XML
SET @Participants = '<ArrayOfEmployees xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
<Employees EmpID="1" EmpName="abcd" />
<Employees EmpID="2" EmpName="efgh" />
</ArrayOfEmployees >'
SELECT Participants.Node.value('@EmpID', 'INT') AS EmployeeID,
Participants.Node.value('@EmpName', 'VARCHAR(50)') AS EmployeeName
FROM
@Participants.nodes('/ArrayOfEmployees /Employees ') Participants (Node)
the above query produces the following result
EmployeeID EmployeeName
--------------- -----------
1 abcd
2 efgh
How do I join the data coming out from the above query with another table in the database, for example Employee in this case
i.e. somewhat like this (note the following query does not perform the join correctly)
SELECT Participants.Node.value('@EmpID', 'INT') AS EmployeeID,
Participants.Node.value('@EmpName', 'VARCHAR(50)') AS EmployeeName
FROM
@Participants.nodes('/ArrayOfEmployees /Employees ') Participants (Node)
INNER JOIN
Employee EMP ON EmployeeID = EMP .EmployeeID
My desired output after the join would be
EmployeeID EmployeeName Email Home Address
--------------- ----------- --------------- -----------
1 abcd abcd@abcd.com New York
2 efgh efgh@efgh.com Austin
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Jan 4, 2013
if you can restore a database to Server B using Server A as the service. Meaning we would issue the command on Server A but somehow point to Server B as where we want the restore to happen.
The backup file would be in a location independent of both servers.
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Jun 20, 2007
Hi all. A few days ago i installed mcafee total protection 2007 and that disabled my internet connection totally!! I couldn't fix it so i had to uninstall it. After uninstalling mcafee total protection 2007 still i couldn't join Internet!!
So i got mad and went and made repair installation of windows xp pro. After repair installation i couldn't activate it since Internet connection was still not working!! So i went and installed another copy of xp pro on different folder and named it WINDOWS (old one was WINDOWS2).Thanks god now i could join Internet but all my shortcuts and menu items are not visible.
Unfortunately I can't even start sql server 2000 either!! could any one tell me what should i do in order to get access to all database tables and data that i had in sql server and make a back up. I didn't install any new sql server yet. I be happy if an expert tell me what should i do. The installation folder of old windows(WINDOWS2) is still available along with sql server installation folder.Thank and looking forward for reply.
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Dec 29, 2007
I have a process that restores a backup from a primary server to a backup server daily. When doing the restore, sometime it fails (for various reasons).
I have coded a job to Set offline, set online, an then do the restore:
RESTORE DATABASE [xxx] FROM DISK = N'D:Backup Stagingxxx.bak' WITH FILE = 1, NOUNLOAD, REPLACE, STATS = 10
Sometimes it fails to bring back online, other errors as well. Is there a reliable method of doing this?
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Sep 16, 2004
It may sound like crazy question, But just curious to know if any one tested this scenario.
I was restoring an existing database from a backup. While the restore is in progress, I found i was restoring with old back, then I canceled the operation.
Now Will it restore the partial data or it rolls back the entire transaction and brings back to original status or it will currupt the database??
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Aug 1, 2015
I have been restoring database backup from server1 to Server2 and both database name is same till today. But I had an error today. I verified path, location and access everything is there but no luck to resolve.
CODE:-
USE Master;
GOÂ
SET NOCOUNT ON
-- 1 - Variable declaration
DECLARE @dbName sysname
DECLARE @backupPath NVARCHAR(500)
DECLARE @cmd NVARCHAR(500)
DECLARE @fileList TABLE (backupFile NVARCHAR(255))
DECLARE @lastGEFullBackup NVARCHAR(500)
DECLARE @backupFile NVARCHAR(500)
DECLARE @GEFullPath NVARCHAR(1000)
[code]....
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Jul 20, 2005
When I run:select * from testtableI get this error message:Invalid object name 'testtable'.However, if I run:select * from testuser.testtableIt works. I'm logged in as testuser, and testuser is the databaseobject owner and tableowner. This was a restored database from adifferent server in SQL Server 2000. The testuser login was in theprevious database. I created the same login in this new test databaseand made it database owner.I've also tried running: sp_change_users_login 'Update_One','testuser', 'testuser'It completed successfully but I still get:select * from testtableInvalid object name 'testtable'.I've also tried creating a different user and making it database ownerand when I change table object owner to this new user, I still get thesame problem. I need to specify:select * from newtestuser.testtableEven though I'm logged in as newtestuser.I also then tried changing table owner to dbo. This seems to worklogged in as either user, but I want to have the tables owned by theuser not dbo. How can I resolve this?Any help would be appreciated.Erin
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Jan 13, 2015
Need to change the datatype of existing column which has huge data.
I'm performing below steps
1. Create new column with correct datatype in the same table
2. copy data into new column
3. drop indexes on column
4. <<<>>>
now the existing column also has many SP dependent and I do not wish to drop them.
5. rename existing column to xxx
6. rename new column to correct column
7. drop old column
8. make required indexes
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Sep 8, 2015
The only way to add a new column to an existing mapping that I know is to go to advanced editor and refresh. This however keeps only the default mapping (where the field names match), the rest is wiped out, so need to restore the mapping manually after that. Risky and annoying at the same time. Is there any alternative?
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Oct 18, 2006
I accidentally deleted some useful data in my database. I have both .LDF and .MDF files for this database.
Is there a way to recover this database to a point of time?
Thx.
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May 15, 2015
I have deleted some data from some table. I dont have any backups and the database in simple recovery Mode. How to recover that data ...
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Feb 24, 2002
Our SQL database log file got physically deleted. Now the database is in suspect mode. Is it possible to recover / restore the database just with the data file.
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Jun 13, 2014
I created a new database and want to recover data from a backup this script
use master
go
restore database new
from disk='D:
ew.bak'
go
but get an error
Message 3141, Level 16, State 0, Line 1
The database to be restored was named 'ats342'. Reissue the statement using the WITH REPLACE option to overwrite the 'new' database.
Message 3013, Level 16, State 1, Line 1
RESTORE DATABASE is terminating abnormally.
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Feb 23, 2015
I am trying to insert bulk data into main table from staging table in sql server 2012. If any error comes, this total activity is rollbacked. I don't want that to happen. I want to know the records where ever the problem persists, and the rest has to be inserted.
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Mar 11, 2008
This is related to:
How can I make some graphics drawings stick while others disappear?
http://forums.microsoft.com/MSDN/ShowPost.aspx?PostID=2905460&SiteID=1
Except that now I am trying to connect and update to an Microsoft SQL Server Database File (SqlClient) via VB 2008 Express; specifically a table called €œHexMap€? that contains some columns that I am ready to insert some row data into. Here is what my program should do:
As I hover over a hexagon map of the US a red flickering hexagon follows the location of my mouse cursor. If I click on a given hexagon, the program draws a permanent blue hexagon, and sends a new set of row data into my database. Such information as the name of the state, row, column, center x, and center y, etc. Here is a quick snapshot of this program in action:
http://farm4.static.flickr.com/3128/2325675990_4155edbdee_o.jpg
-sorry, I didn't capture the mouse cursor inside the red hexagon
I think I am missing something since I appear to be able to connect successfully to the database table. Unfortunately, I never see the changes in the database, when I try to Show Table Data (via Database Explorer). I am hoping someone will review my code snippet (below) and tell me what I am missing. What happens when I run this code is that it acts like it works just fine, except that I have no indication that any changes were actually affected.
Code Snippet
'======================================================================================
Dim CN As New SqlClient.SqlConnection()
Dim da As New SqlClient.SqlDataAdapter
'Consider using Me._adapter that is used already
CN.ConnectionString = "Data Source=.SQLEXPRESS;AttachDbFilename=|DataDirectory|Mapboard.mdf;Integrated Security=True;Connect Timeout=30;User Instance=True"
CN.Open()
'Use the following code to verify that a connection to the database has achieved
If CN.State = ConnectionState.Open Then
MsgBox("Workstation " & CN.WorkstationId & "connected to database " & CN.Database & "on the " & CN.DataSource & " server")
End If
Try
Catch ex As Exception MsgBox("FAILED TO OPEN CONNECTION TO DATABASE DUE TO THE FOLLOWING ERROR" & vbCrLf & ex.Message)
End Try
'use the Connection object to execute statements
'against the database and then close the connection
da = New SqlClient.SqlDataAdapter("select * from HexMap order by Territory", CN)
If CN.State = ConnectionState.Open Then CN.Close()
'==========================================================================
Dim rows As Integer
rows = 0
Dim CMD As New SqlCommand("INSERT HexMap (Hexagon, HexRow, HexCol, HexX, HexY, Territory) VALUES(HexCounter, CaptureRow,CaptureCol,Hx,Hy,Territory_ComboBox1.Text)", CN)
CN.Open()
rows = CMD.ExecuteNonQuery
If rows = 1 Then
MsgBox("Table HexMap updated successfully")
Else
MsgBox("Failed to update the HexMap table")
End If
If CN.State = ConnectionState.Open Then CN.Close()
'==========================================================================
Thanks for reviewing my code.
Technozoide
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Apr 29, 2015
whenever I use the below script, it throws the below error.
declare @DbFilePath VARCHAR(max)
set @DbFilePath = ' c:mdndndmmnsn'
if object_id('tempdb.dbo.#fileExist') is not null
drop table #fileExist
[Code] ....
Msg 0, Level 11, State 0, Line 0 A severe error occurred on the current command. The results, if any, should be discarded.
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Jun 9, 2015
I am trying to replicated table A into table B withing the same server and the same database.
I am getting an error message when trying to configure the subscription: You have selected the Publisher as a Subscriber and entered a subscription database that is the same as the publishing database. Select another subscription database.
Is there any workaround for this?
I am using SQL Server 2008 R2.
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Feb 23, 2015
I am working on a task. Currently we are taking a database backup and keeping that backups in a folder. The backups doesn't have time stamp on it. My task is need to get the latest backup and copy that backups into some other server and then restore the database from there.I am planning to create SSIS package.Do we need script task for this task.How to get the .bak with latest create or moidified date. For now we doesn't have timestamp so need to go based on modified date?
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May 1, 2015
I was contacted by the SAN team to test backup/restore of larger databases using a split-mirror backup (BCV) or clone that is taken from production db server and copied to another sql box. They want to use this process once a week. I see the mounted drives with the data/log files. All looks good. Initially I attempted to attach the databases and received (Unable to open the physical file db.mdf Operating System Error 5 Access is denied). I manually granting SQLServerMSSQLUser$<computer_name>$<instance_name> on all of the physical files 20 total. That worked.
Since this will be weekly, the SAN team performed the copy again and now none of the databases can communicate with the newly copied files. NTFS permissions need to be set again. I'm getting (Operating System error 21: the device is not ready). Is there something that I'm missing in this process how the vendor BCV clones the data and SQL communicates with the copied files as I was thinking it would be more automated process?
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Feb 9, 2015
We have an existing BI/DW process that adds large chunks of data daily (~10M rows) to an existing table, as well as using Deletes to remove stale data. This scenario seems to beg for partitioning to support switching in/out data.
After lots of reading on this, I have figured out the mechanics of the switching, bit I still have some unknowns about the indexes needed to support this.
The table currently has several non-clustered indexes, including one on the partitioning column - let's call that column snapshotdate. Fortunately there are no FKs involved, and no constraints.
Most of the partitioning material I see focuses on creating a clustered PK to assist with switching. Not sure if this is actually necessary, but assume I create one using an Identity column (currently missing) plus snapshotdate.
For the other non-clustered, non-unique indexes, can I just add the snapshotdate to the end of the index? i.e. will that satisfy the switching requirement?
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Mar 25, 2015
Let's say I have a function named MyCustomFunction and I want to ensure that it exists in the database. Let's say I have a create script for the function. I want the script to be runnable multiple times if needed. A common way to do this is to check for an object_id at the top of the function like this:
IF OBJECT_ID('MyCustomFunction') IS NULL
DROP FUNCTION MyCustomFunction
GO
CREATE FUNCTION MyCustomFunction...
But is there a more elegant way to do this? For example, instead of dropping and recreating the function, is there a way to simply exit from the script and do nothing if the function already exists? Something like this:
IF OBJECT_ID('MyCustomFunction') IS NULL RETURN
GO
CREATE FUNCTION MyCustomFunction...
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Sep 4, 2015
We have a SQL 2008 Instance existing on active/passive cluster with 2 nodes running on Windows server 2008 R2 Ent. Edn.
Now we need to install another SQL instance on this cluster. So what are the prerequisites apart from new IP address? Do we need shared disks or can the existing disks can be utilized?
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Jul 7, 2015
I'm trying to migrate tables from one database to another. The tables in the source database (MY_SOURCE_DB) have a schema of "dbo". I want to create the tables in the target database (MY_TARGET_DB) with a schema of "xyz". I want to migrate all of the tables with "contract" in the table name:
select table_name from information_schema.tables
where table_name like '%contract%'
I want to migrate the full table definitions, table data and dependent objects. This needs to be done through a sql script as opposed to SSIS.
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