TRIM() function in MySQL is used to clean up data. It is also used to remove the unwanted leading and trailing characters in a string.
Syntax :
TRIM([{BOTH | LEADING | TRAILING} [remstr] FROM] str)
Parameter : This method accepts three-parameter as mentioned above and described below :
- BOTH | LEADING | TRAILING : LEADING, TRAILING, or BOTH option to explicitly instruct the TRIM() function to remove leading, trailing, or both leading and trailing unwanted characters from a string .By default, the TRIM() function uses the BOTH option.
- removed_str : It is a string which we want to remove. If not given, spaces will be removed.
- str : It identifies the string from which we want to remove removed_str.
Returns : It returns a string that has unwanted characters removed.
Example-1 : TRIM() function to remove only leading spaces.
SELECT TRIM(LEADING FROM " www.geeksforgeeks.org ") AS TrimmedString;
Output :
| TrimmedString |
|---|
| www.geeksforgeeks.org |
Example-2 : TRIM() function to remove only trailing spaces.
SELECT TRIM(TRAILING FROM " www.geeksforgeeks.org ") AS TrimmedString;
Output :
| TrimmedString |
|---|
| www.geeksforgeeks.org |
Example-3 : TRIM() function to remove both leading and trailing spaces.
SELECT TRIM(" www.geeksforgeeks.org ") AS TrimmedString;
Output :
| TrimmedString |
|---|
| www.geeksforgeeks.org |
Example-4 : TRIM() function with the table data
Table : Student_Details :
| Student_Id | Student_Name |
|---|---|
| 101 | Virat |
| 103 | Rohit |
| 105 | Sikhar |
SELECT TRIM(TRAILING FROM Student_Name) FROM Student_Details AS Trimmed_String;
Output :
| TrimmedString |
|---|
| Virat |
| Rohit |
| Sikhar |