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SQL Functions SQL Server

Like() function in SQL Server

Byvivekjohari

Aug 11, 2014 #SQL Functions
Like:- This operator is used in a WHERE clause to search for a specific pattern in the values of the column.

In this article, we are going to use the following table for the examples:-

CREATE TABLE [dbo]. [Employee](
[Empid] [Int] IDENTITY (1, 1) NOT NULL Primary key,
[EmpNumber] [nvarchar](50) NOT NULL,
[EmpFirstName] [nvarchar](150) NOT NULL,
[EmpLAStName] [nvarchar](150) NULL,
[EmpEmail] [nvarchar](150) NULL,
[Salary] [int] NULL
)

We insert following data into the above tables:-

Insert Into Employee (EmpNumber,EmpFirstName,EmpLAStName,EmpEmail,salary)
Values(‘A001′,’Vivek’,’Johari’,’samir@abcmail.com’,200000)

Insert Into Employee (EmpNumber,EmpFirstName,EmpLAStName,EmpEmail,salary)
Values(‘A002′,’Amit’,’Kumar’,’amit@abcmail.com’,100000)

Insert Into Employee (EmpNumber,EmpFirstName,EmpLAStName,EmpEmail,salary)
Values(‘A003′,’Neha’,’Sharma’,’neha@abcmail.com’,300000)

Insert Into Employee (EmpNumber,EmpFirstName,EmpLAStName,EmpEmail,salary)
Values(‘A004′,’Nidhi’,’Sharma’,’nidhi@abcmail.com’,270000)
 

For example, suppose we want to get the records of the employee whose firstname start with character ‘N’, then we can use the below query:-

select * from employee where EmpFirstName  like ‘N%’

This query will returns the records for the employee whose empnumber is given below:

A003
A004

Again, suppose we want to get the records of the employees whose last name end with character ‘a’, then we can use the below query:-

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Select * from employee where EmplastName  like ‘%a’

This query will returns the records for the employee whose empnumber is given below:-

A003
A004

Now, suppose we want to get the records of the employees whose last name contains character ‘ha’, then we can use the below query:-

select * from employee where EmplastName  like ‘%ha%’

This query will returns the records for the employees whose empnumber is given below:

A001
A003
A004

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By vivekjohari

I am currently working as a Senior Database Professional and have around 18 years of experience in database. Degree:- Master Degree in Computer(MCA) Certification course in Data Science & Machine Learning from Indian Institute of Technology (IIT), Delhi Work experience:- Designing of the database. Database Optimization. Writing Complex Stored Procedures,Functions,Triggers etc. Designing and developing SSIS & DTS packages. Designing SQL Reports using SSRS. Database Server Maintenance. Certification:- MCTS: DA-100: Analysing Data with Microsoft Power BI MCTS: DP-300: Administering Relational Databases on Microsoft Azure Microsoft certified Sql DBA in Sql server 2008 (MCTS). Microsoft certified BI professional in Sql server 2008 (MCTS). Oracle certified profession DBA in ORACLE 10g (OCP) certified profession DBA in ORACLE 9i (OCP) My other publication Technical Blog:- Technologies with Vivek Johari Guest Author and Blogger at sqlservercentral.com

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