Skip to main content

SQL Server Tutorial - Database queries

1. Rename Database:

In this query we will learn about How to rename database in SQL Server.
1
EXEC sp_renamedb 'oldName', 'newName'
OR
1
ALTER DATABASE oldName MODIFY NAME = newName

2. Rename Table:

In this query we will learn about How to rename Table in SQL Server.
1
EXEC sp_rename 'OldTableName', 'NewTableName'

3. Rename Table Column:

In this query we will learn about How to rename Table Column in SQL Server.
1
EXEC sp_rename 'TableName.OldColumnName' , 'NewColumnName', 'COLUMN'

4. Check SQL Server version:

In this query we will learn about How to check version of SQL Server.
1
SELECT @@version

5. Get list of hard drives with free space:

In this query we will learn about How to get list of system hard drives with available free space using SQL Server.
1
EXEC master..xp_fixeddrives

6. Get Id of latest inserted record:

In this query we will learn about How to Id of latest inserted record in SQL Server.
1
2
3
4
INSERT INTO TableName (NAME,Email,Age) VALUES ('Test User','test@gmail.com',30)
     
-- Get Id of latest inserted record
SELECT SCOPE_IDENTITY()

7. Delete duplicate records:

In this query we will learn about How to delete duplicate records in SQL Server.
1
2
3
4
5
6
7
DELETE
FROM TableName
WHERE ID NOT IN
(
SELECT MAX(ID)
FROM TableName
GROUP BY DuplicateColumn)

8. Display Text of Stored Procedure, Trigger, View :

In this query we will learn about How to Display Text of Stored Procedure, Trigger, View in SQL Server.
1
2
exec sp_helptext @objname = 'getInfoFromTable' 
-- Here getInfoFromTable is my storedprocedure name

9. Get List of Primary Key and Foreign Key for a particular table :

In this query we will learn about How to get list of Primary Key and Foreign Key for a particular table in SQL Server.
1
2
3
4
5
SELECT  DISTINCT 
Constraint_Name AS [ConstraintName], 
Table_Schema AS [Schema], 
Table_Name AS [Table Name] FROM INFORMATION_SCHEMA.KEY_COLUMN_USAGE 
WHERE INFORMATION_SCHEMA.KEY_COLUMN_USAGE.TABLE_NAME='TableName' 

10. Get List of Primary Key and Foreign Key of entire database:

In this query we will learn about How to get list of Primary Key and Foreign Key for a entire database in SQL Server.
1
2
3
4
SELECT  DISTINCT 
Constraint_Name AS [ConstraintName], 
Table_Schema AS [Schema], 
Table_Name AS [Table Name] FROM INFORMATION_SCHEMA.KEY_COLUMN_USAGE 
Labels:

Comments

Post a Comment

Popular posts from this blog

.NET Core 2.0 Changes – 4 Key Things to Know

1. .NET Standard 2.0 Expanded APIs & the Ability to Reference Full Framework Libraries .NET Standard broadens the set of APIs available to include a lot of the missing features. It now supports 32,000+ APIs. It is now much easier to port your code to a .NET Standard library without major code changes. One of the biggest problems with .NET Core was the lack of third-party libraries. For example, when 1.0 came out, popular logging libraries like log4net were not even available (it is now). However, this was really only a problem if you wanted to deploy your app on Mac or Linux. You could have used .NET Core and targeted full .NET framework and not had these issues. .NET Standard 2.0 has added a  new compatibility shim  that will enable any .NET Core app to reference any full framework library. 2. Expanded OS Support One of the big goals with .NET Core is portability across multiple operating systems. Including desktops, servers, and even mobile. Microsoft ...
Post a Comment
Read more

ASP.NET Core - MVC Design Pattern

The MVC (Model-View-Controller) design pattern is a design pattern that's actually been around for a few decades, and it's been used across many different technologies, everything from Smalltalk to C++ to Java and now in C# and .NET as a design pattern to use when you're building a user interface. The MVC design pattern is a popular design pattern for the user interface layer of a software application. In larger applications, you typically combine a model-view-controller UI layer with other design patterns in the application, like data access patterns and messaging patterns. These will all go together to build the full application stack. The MVC separates the user interface (UI) of an application into the following three parts − The Model  − A set of classes that describes the data you are working with as well as the business logic. The View  − Defines how the application’s UI will be displayed. It is a pure HTML which decides how the UI is going to loo...
Post a Comment
Read more

Become a MEAN Stack Developer

The MEAN stack is  MongoDB ,  Express.js ,  AngularJS  (or  Angular ), and  Node.js . Because all components of the MEAN stack support programs written in JavaScript, MEAN applications can be written in one language for both  server-side  and  client-side  execution environments. MEAN  was coined by Valeri Karpov, a MongoDB developer. He introduced the term in a blog post. The logo concept, initially created by Austin Anderson for the original MEAN stack  LinkedIn  group, is an assembly of the first letter of each component of the MEAN acronym. The components of the MEAN stack are as follows: M ongoDB, a NoSQL database E xpress.js, a web application framework that runs on Node.js A ngular.js or  A ngular, JavaScript MVC frameworks that run in browser JavaScript engines N ode.js, an execution environment for event-driven server-side and networking appl...
Post a Comment
Read more