Oracle/PLSQL: Replace Function

In Oracle/PLSQL, the replace function replaces a sequence of characters in a string with another set of characters.

Syntax

The syntax for the replace function is:

replace( string1, string_to_replace, [ replacement_string ] )

string1 is the string to replace a sequence of characters with another set of characters.

string_to_replace is the string that will be searched for in string1.

replacement_string is optional. All occurrences of string_to_replace will be replaced with replacement_string in string1. If the replacement_string parameter is omitted, the replace function simply removes all occurrences of string_to_replace, and returns the resulting string.

Applies To

• Oracle 11g, Oracle 10g, Oracle 9i, Oracle 8i

For Example

replace('123123tech', '123');	would return 'tech'
replace('123tech123', '123');	would return 'tech'
replace('222tech', '2', '3');	would return '333tech'
replace('0000123', '0');	would return '123'
replace('0000123', '0', ' ');	would return '    123'