Before an existing database can be restored, there should be connections using the database in question. If the database is currently in use the RESTORE command fails with below error:
Msg 3101, Level 16, State 1, Line 2
Exclusive access could not be obtained because the database is in use. Read more
ORDER BY clause can be used to sort the results returned by SELECT statement in SQL Server. It orders the result set by specified column list. When used with character data type columns it sorts data in dictionary-order.
Sometimes, we need result set to be sorted in a custom order,… Read more
Earlier on my blog I posted on How to get SQL Server Service Account using T-SQL. That works on a single instance. If you multiple instances of SQL Server installed on a server you can use below script to get SQL Server and SQL Server Agent service account information… Read more
SQL Server service account information is stored in Windows Registry database. You can get this information from Services Console or SQL Server Configuration Manager.
To get account information from Services Console:
1. Go to Start > Run > Services.msc
2. Right Click on SQL Server Service, i.e. “SQL… Read more
There are several options available to import data from external sources to SQL Server. Such as Import & Export Wizard, BULK INSERT command, SSIS and OPENROWSET.
Apart from this options you can also use xp_cmdshell to import text file to SQL Server. We need to utilize dos command TYPE for… Read more
This is a follow-up post on SQL Server – Check SQL Agent Job History using T-SQL.
SQL Server Agent stores SQL jobs history in sysjobhistory. It has two different columns for date and time, Run_Date and Run_Time. Since this is not available as DATETIME we cannot filter… Read more
To SELECT only top N rows from a table we can use TOP clause in SELECT statement. Using TOP clause we can also specify percentage option.
For example, both of these statements are valid:
SELECT TOP 5 EmployeeId,FirstName,LastName
GO Read more
By default SQL Server ERRORLOG is stored in "C:\Program Files\Microsoft SQL Server\InstanceFolder\MSSQL\Log" folder. The ERRORLOG location is configured as a startup parameter for SQL Server Service.
To change the location of ERRORLOG you need to modify the startup parameter -e.
For example, if you need to move logs to C:\Logs\… Read more
If you have lost the password for sa account or does not have any administrative account and you are locked out of SQL Server you can still login to SQL Server as an Administrator using Local administrator account.
You can use any account which is part of local Administrators… Read more
When an account is disable it cannot be used to login to SQL Server. You will receive below error when logging-in to SQL Server using a disabled Login account:
You can enable a disabled SQL Server Login using SQL Server Management Studio or via T-SQL code.
To enable a… Read more
Often we may need to update a column in a table based of another column in another table.
In SQL Server you can do this using UPDATE statement by joining tables together.
To understand this better let’s take a look at below contrived example.
SELECT CustomerID Read more
To get database size information we can use sys.master_files catalog view. This view contains a row per file of a database for all databases.
The columns of interest for retrieving database size information are:
|database_id||ID of the database to which the file belongs to|
To move a database from one location to other you fist need to detach the database from server. In this article we will learn different ways to detach a database from server.
There are two different methods available to detach a database from a server.
Method 1. Detach a Database… Read more
When you are working on a database with a large number of objects sometimes it becomes a challenge to locate objects. Object Explorer in SQL Server Management Studio lists all objects according to category and it may be hard to locate specific object.
To resolve this you can Object Explorer… Read more
In earlier version of SQL Server Management Studio (2005, 2008 and 2008 R2) you can show/hide results pane using keyboard shortcut Ctrl+R. This shortcut was also present in Query Analyzer (SQL Server 2000).
This shortcut is no longer available in SQL Server Management Studio 2012. In this version you… Read more
Starting with SQL Server 2005 all tables are grouped into schemas. While creating a table if the schema name is not specified it is created in the default schema of the user creating it. you can use ALTER SCHEMA command to move tables between schemas.
For example, if I… Read more
To identify default data and log directories in SQL Server 2012 you can use SERVERPROPERTY() function. In SQL Server 2012 two new parameters are added to SERVERPROPERTY() function namely, InstanceDefaultDataPath and InstanceDefaultLogPath which returns the default data and log directories respectively.
It can be used as below:
SELECT [Default Data… Read more
By default SQL Server listens on TCP port number 1433, and for named instances TCP port is dynamically configured. There are several options available to get the listening port for SQL Server Instance.
Here are a few methods which we can use to get this information.
Method 1: SQL… Read more
There are two different command you can use to check if you are running 32-bit or 64-bit version of SQL Server.
You can user @@VERSION system variable to determine edition and architecture of SQL Server as below:
Microsoft SQL Server 2012 (SP1) – 11.0.3000.0… Read more
Both Clustered and Nonclustered Indexes have same physical structure in SQL Server. Both are stored as a B-Tree structure in SQL Server.
1. The leaf node of a Clustered Index contains data pages of the… Read more