The SQL RIGHT function is used to return the rightmost characters from a given expression. SQL Server RIGHT function uses its second argument to decide the number of characters it should return and the syntax of it is
SELECT RIGHT(Character_Expression, Value) FROM [Source]
- Character_Expression: It will write the rightmost characters from this expression.
- Value: Number of characters it has to extract from the Character_Expression.
The index position in the SQL Server RIGHT Function will start from 1, Not 0. For this example, we use the below data
SQL RIGHT Function Example
The SQL RIGHT function returns the specified number of rightmost characters from the given string. The following query returns the rightmost 6 and 20 characters from a variable.
First, we declared a Character expressions with sample text. Next, we used this one to return six rightmost characters from the @Character_Expression variable.
In the next line, We set the second argument = 20, which is greater than the string length. So, the SQL RIGHT Function. prints all the letters from the @Character_Expression
DECLARE @Charcater_Expression varchar(50) SET @Charcater_Expression = 'Learn SQL Server' --Using Positive Integer 6 SELECT RIGHT(@Charcater_Expression, 6) AS 'SQLRIGHT' --Searching from specific position – 20 SELECT RIGHT(@Charcater_Expression, 20) AS 'SQLRIGHT'
SQL RIGHT Function Example 2
The RIGHT function also allows you to select the rightmost characters from the column values. In this Server example, we print the rightmost nine words of all the records present inside the Email column
SELECT [FirstName] ,[LastName] ,[DepartmentName] ,[Email] ,RIGHT([Email], 9) AS [SQLRIGHT] FROM [Employe]
If you observe the above result, it is not getting the domain names perfectly because we are using fixed value. In the next String method example, we show how to use dynamic value as a second argument to return the domain names accurately.
Find Domain Names in Email
We will find the domain names present in the Email column using the SQL right Function.
SELECT [FirstName] ,[LastName] ,[DepartmentName] ,[Email] ,RIGHT( [Email] ,(LEN([Email]) - CHARINDEX ('@', [Email])) ) AS [SQLRIGHT] FROM [Employe]
Within the right function, it will find the length of Email using LEN method
It returns the index position of the @ symbol. It means the CHARINDEX method check for the index position of @ symbol in every record.
CHARINDEX ('@', [Email])
We subtracted the index position from the Length of a string
(LEN([Email]) - CHARINDEX ('@', [Email]))