SQL Server: Query to check if given column exists

 

select s.[name] 'Schema', t.[name] 'Table', c.[name] 'Column', d.[name] 'Data Type', d.[max_length] 'Max Length', d.[precision] 'Precision', c.[is_identity] 'Is Id', c.[is_nullable] 'Is Nullable', c.[is_computed] 'Is Computed', d.[is_user_defined] 'Is UserDefined', t.[modify_date] 'Date Modified', t.[create_date] 'Date created' from sys.schemas s inner join sys.tables t on s.schema_id = t.schema_id inner join sys.columns c on t.object_id = c.object_id inner join sys.types d on c.user_type_id = d.user_type_id where c.name like 'Person%'

How to: find when the database last got restored?

 

   1:  SELECT destination_database_name,max(restore_date) as restore_date

   2:  FROM msdb.dbo.restorehistory 

   3:  WHERE destination_database_name = 'testDB’  ---- Place your database name here

   4:  GROUP BY destination_database_name

The result will look like;

destination_database_name     restore_date

testDB                        2013-04-29 11:49:19.940

SQL 2008 Management Studio does not allow to save changes to tables

 

In SQL Server 2008 Management Studio,

We can not do

   •Change the Allow Nulls setting for a column

   •Reorder the columns

   •Change the column data type

    •Add a new column

How to fix / Resolution:

    •Go to Tools -> Options -> Designers -> Tables and Designers

     •Uncheck the Prevent Saving Changes that require table re-creation

SQL Server Contained Database Authentication process flow

 

 

 

Source: http://blogs.msdn.com/b/sqlsecurity/archive/2010/12/08/contained-database-authentication-in-depth.aspx

The operation cannot be performed on a database with database snapshots or active DBCC replicas

 

When trying to restore the database with snapshots got the following error SQL message

SQL Server T-SQL Command

restore database PRD_Accounts from disk ='H:\PRD_Accounts_backup_daily.bak' with replace, stats

Error:

Msg 5094, Level 16, State 2, Line 1
The operation cannot be performed on a database with database snapshots or active DBCC replicas.
Msg 3013, Level 16, State 1, Line 1
RESTORE DATABASE is terminating abnormally.

Resolution

Since we cannot restore a database if we have any snapshots.
Please drop all snapshots and try database restore again.

1. To check the database snapshot and it’s source database

select database_id, name,source_database_id,Source_DBName=DB_NAME(source_database_id) from master.sys.databases where source_database_id IS NOT NULL

2. Drop the Snapshot database

DROP DATABASE Accounts_Rpt

3. Create script of snapshot database, before dropping it. If at all we need to re-establish the snapshot after restore we can use it

USE master GO /****** Object:  Database [Benefits_Rpt_sol48u]    Script Date: 12/03/2012 00:01:02 ******/ CREATE DATABASE [Accounts_Rpt] ON ( NAME = N'PRD_Accounts', FILENAME = N'E:\MSSQL\Data\Accounts_Rpt.ss1' ), ( NAME = N'indexdat1', FILENAME = N'E:\MSSQL\Data\Accounts_Rpt.ss2' ) AS SNAPSHOT OF [PRD_Accounts] GO

SQL Mail: The mail could not be sent to the recipients because of the mail server failure.

SQL Mail Sent fail with errors below;

Error from the SQL Mail log:

The mail could not be sent to the recipients because of the mail server failure. (Sending Mail using Account 3 (2012-11-07T22:09:50). Exception Message: Could not connect to mail server. (No connection could be made because the target machine actively refused it 205.191.22.44:25). )

The mail could not be sent to the recipients because of the mail server failure. (Sending Mail using Account 3 (2012-01-17T11:13:58). Exception Message: Could not connect to mail server. (No such host is known). )

The mail could not be sent to the recipients because of the mail server failure. (Sending Mail using Account 3 (2012-01-17T11:12:44). Exception Message: Cannot send mails to mail server. (Failure sending mail.). )

The mail could not be sent to the recipients because of the mail server failure. (Sending Mail using Account 1 (2010-10-24T19:55:11). Exception Message: Could not connect to mail server. (A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond 16.236.32.51:25). )

Resolution:

From the error message it is clear that it is a communication issue between SQL Server host and the Mail Exchange Server.

Problem was related to Exchange Server not allowing relaying from SQL Server.

Please engage Network Administrator to add SQL Server host IP Address to allow to send emails taking below steps, like

On Mail server > Exchange Server Manager > SMTP Connector Properties
> Access Properties > Access Tab > Relay button > Add  IP Address of SQL Server

Also cross check if the Anti Virus (AV) program running on the SQL Server host. AV blocks services from sending on TCP-25. Adjust the AV software accordingly. Add DATABASEMAIL90.EXE to the list of innocent programs in your AV.

Query to find the Linked Servers with given remote login

 

It would be useful to cross check, when the Linked Server remote login password has changed.
In this case, linked server will wail due to wrong password. To fix this we have reset the correct password.

SELECT s.server_id,S.name,S.product,S.provider,l.remote_name,'Remote_Login_Modified_Dt'=l.modify_date,s.modify_date FROM SYS.SERVERS S INNER JOIN SYS.LINKED_LOGINS L ON  s.server_id = L.server_id WHERE S.server_id > 0 AND S.product ='SQL Server' AND L.remote_name ='sa'

Returning the parameters for a specified stored procedure or function

 

Before you run the following query, replace <database_name> and <schema_name.object_name> with valid names.

USE <database_name>; GO SELECT SCHEMA_NAME(schema_id) AS schema_name     ,o.name AS object_name     ,o.type_desc     ,p.parameter_id     ,p.name AS parameter_name     ,TYPE_NAME(p.user_type_id) AS parameter_type     ,p.max_length     ,p.precision     ,p.scale     ,p.is_output FROM sys.objects AS o INNER JOIN sys.parameters AS p ON o.object_id = p.object_id WHERE o.object_id = OBJECT_ID('<schema_name.object_name>') ORDER BY schema_name, o.object_name, p.parameter_id; GO

 

Reference: http://msdn.microsoft.com/en-us/library/ms190324.aspx

List database objects modified in the last ‘N’ days

 

Before you run the following query, replace <database_name> and <n_days> with valid values.

 

USE <database_name>; GO SELECT name AS object_name   ,SCHEMA_NAME(schema_id) AS schema_name   ,type_desc   ,create_date   ,modify_date FROM sys.objects WHERE modify_date > GETDATE() - <n_days> ORDER BY modify_date; GO

 

Source: http://msdn.microsoft.com/en-us/library/ms190324.aspx

Script to check SQL Server Linked Server Status

 

It leverages on the system stored procedure sys.sp_testlinkedserver

SET NOCOUNT ON; DECLARE @LinkName NVARCHAR (128), @retval INT, @msg varchar(300) IF (SELECT COUNT (srvname) FROM sys.sysservers WHERE srvname <> @@SERVERNAME) = 0 RETURN DECLARE srvname INSENSITIVE CURSOR FOR         (SELECT srvname FROM sys.sysservers WHERE srvname <> @@SERVERNAME) FOR READ ONLY OPEN srvname     FETCH NEXT FROM srvname INTO @LinkName WHILE @@FETCH_STATUS = 0 BEGIN     BEGIN TRY         EXEC @retval = sys.sp_testlinkedserver @LinkName     END TRY         BEGIN CATCH         IF @LinkName IS NULL RETURN         SET @retval = SIGN(@@ERROR)         IF @retval <> 0         BEGIN           SET @msg = 'Unable to connect to the Linked server : ' + @LinkName           RAISERROR (@msg, 16, 2 )         END     END CATCH     FETCH NEXT FROM srvname INTO @LinkName     END        CLOSE srvname DEALLOCATE srvname

SQL Server 2012 official launch by March 7, 2012

SQL Server 2012 to be released officially by March 7, 2012.

http://www.sqlserverlaunch.com