Oracle/PLSQL: TRIM Function
This Oracle tutorial explains how to use the Oracle/PLSQL TRIM function with syntax and examples.
Description
The Oracle/PLSQL TRIM function removes all specified characters either from the beginning or the ending of a string.
Syntax
The syntax for the TRIM function in Oracle/PLSQL is:
TRIM( [ [ LEADING | TRAILING | BOTH ] trim_character FROM ] string1 )
Parameters or Arguments
- LEADING
- The function will remove trim_character from the front of string1.
- TRAILING
- The function will remove trim_character from the end of string1.
- BOTH
- The function will remove trim_character from the front and end of string1.
- trim_character
- The character that will be removed from string1. If this parameter is omitted, the TRIM function will remove space characters from string1.
- string1
- The string to trim.
Note:
- If you do not choose a value for the first parameter (LEADING, TRAILING, BOTH), the TRIM function will remove trim_character from both the front and end of string1.
- See also the LTRIM and RTRIM functions.
Applies To
The TRIM function can be used in the following versions of Oracle/PLSQL:
- Oracle 12c, Oracle 11g, Oracle 10g, Oracle 9i, Oracle 8i
Example
Let's look at some Oracle TRIM function examples and explore how to use the TRIM function in Oracle/PLSQL.
For example:
TRIM(' tech ')
Result: 'tech'
TRIM(' ' FROM ' tech ')
Result: 'tech'
TRIM(LEADING '0' FROM '000123')
Result: '123'
TRIM(TRAILING '1' FROM 'Tech1')
Result: 'Tech'
TRIM(BOTH '1' FROM '123Tech111')
Result: '23Tech'