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MySQL - RIGHT() Function
The MySQL RIGHT() function accepts a string value and a numerical value (say N) as parameters and returns the specified string up to N characters from right to left.
This function can be useful in various scenarios such as extracting a file extension, area code or any other text string from the right end of the string.
Syntax
Following is the syntax of MySQL RIGHT() function −
RIGHT(str, length)
Parameters
This function takes a string value and a specified number of characters as parameter.
Return Value
This function returns the rightmost portion of the string with the specified length.
Example
In the following example, the function extracts the last 5 characters from the string 'TUTORIALSPOINT' −
SELECT RIGHT('Tutorialspoint', 5);
Following is the output of the above code −
RIGHT('Tutorialspoint', 5) |
---|
POINT |
Example
If the specified number of characters is larger than the length of the string, the function returns the entire string without any change −
SELECT RIGHT('Hello', 10);
The output obtained is as follows −
RIGHT('Hello', 10) |
---|
Hello |
Example
If any of the arguments passed to the function is NULL, it returns NULL −
SELECT RIGHT(NULL, 5);
The output obtained is as follows −
RIGHT(NULL, 5) |
---|
0x |
Example
You can also pass numerical values as an argument to this function −
SELECT RIGHT(763275825171, 6);
We get the output as follows −
RIGHT(763275825171, 6) |
---|
825171 |
Example
You can also use variables to store strings and then apply the RIGHT() function −
SET @str = '05/20/2023'; SELECT RIGHT(@str, 4) AS 'year';
We get the output as follows −
year |
---|
2023 |
Example
You can also pass column name of a table as an argument to this function and print the desired characters in it.
Let us create a table named "EMP" and insert records into it using CREATE and INSERT statements as shown below −
CREATE TABLE EMP( FIRST_NAME CHAR(20) NOT NULL, LAST_NAME CHAR(20), AGE INT, INCOME FLOAT );
Now, let us insert records into it using the INSERT statement −
INSERT INTO EMP VALUES ('Krishna', 'Sharma', 19, 2000), ('Raj', 'Kandukuri', 20, 7000), ('Ramya', 'Ramapriya', 25, 5000), ('Mac', 'Mohan', 26, 2000);
The EMP obtained is as follows −
FIRST_NAME | LAST_NAME | AGE | INCOME |
---|---|---|---|
Krishna | Sharma | 19 | 2000 |
Raj | Kandukuri | 20 | 7000 |
Ramya | Ramapriya | 25 | 5000 |
Mac | Mohan | 26 | 2000 |
Following query retrieves the last 3 characters in the column "FIRST_NAME" using the RIGHT() function −
SELECT FIRST_NAME, LAST_NAME, AGE, RIGHT(FIRST_NAME, 3) as Result FROM EMP;
Output
After executing the above code, we get the following output −
FIRST_NAME | LAST_NAME | AGE | Result |
---|---|---|---|
Krishna | Sharma | 19 | hna |
Raj | Kandukuri | 20 | Raj |
Ramya | Ramapriya | 25 | mya |
Mac | Mohan | 26 | Mac |
Example
Assume we have created another table with the name PERSONS using the following query −
CREATE TABLE PERSONS( ID INT AUTO_INCREMENT PRIMARY KEY, NAME VARCHAR(100) NOT NULL, AGE VARCHAR(20) NOT NULL );
Here, we are inserting records into the above-created table using INSERT INTO statement as follows −
INSERT INTO PERSONS(NAME, AGE) VALUES ('Navjot singh', 32), ('Virat kohli', 23), ('Ramandeep kaur', 53), ('Deepak chahar', 78), ('Harry brook', 27);
The PERSONS obtained is as follows −
ID | NAME | AGE |
---|---|---|
1 | Navjot singh | 32 |
2 | Virat kohli | 23 |
3 | Ramandeep kaur | 53 |
4 | Deepak chahar | 78 |
5 | Harry brook | 27 |
In the following query, we are fetching the lastname of every person from PERSONS table. To do so, following is the approach −
- Firstly, we use the INSTR() function to find the location of the space (" ") in the name.
- Secondly, we use the LENGTH() function to find the length of the name. Here length of the RIGHT function will be length of the person name minus the location of the space (" ").
- In addition to that, we use the RIGHT() function to extract the last name of the person i.e. the characters after the space (" ").
SELECT NAME, RIGHT(NAME, LENGTH(NAME) - INSTR(NAME, ' ')) AS 'Lastname' FROM PERSONS;
Output
After executing the above code, we get the following output −
NAME | Lastname |
---|---|
Navjot singh | singh |
Virat kohli | kohli |
Ramandeep kaur | kaur |
Deepak chahar | chahar |
Harry brook | brook |