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  • Oracle/PLSQL: REPLACE Function-from cyber

    Oracle/PLSQL: REPLACE Function

    This Oracle tutorial explains how to use the Oracle/PLSQL REPLACE function with syntax and examples.

    Description

    The Oracle/PLSQL REPLACE function replaces a sequence of characters in a string with another set of characters.

    Syntax

    The syntax for the REPLACE function in Oracle/PLSQL is:

    REPLACE( string1, string_to_replace [, replacement_string] )

    Parameters or Arguments

    string1
    The string to replace a sequence of characters with another set of characters.
    string_to_replace
    The string that will be searched for in string1.
    replacement_string
    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

    The REPLACE 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 REPLACE function examples and explore how to use the REPLACE function in Oracle/PLSQL.

    For example:

    REPLACE('123123tech', '123');
    Result: 'tech'
    
    REPLACE('123tech123', '123');
    Result:'tech'
    
    REPLACE('222tech', '2', '3');
    Result: '333tech'
    
    REPLACE('0000123', '0');
    Result: '123'
    
    REPLACE('0000123', '0', ' ');
    Result: '    123'
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  • 原文地址:https://www.cnblogs.com/Jeffrey-xu/p/4819601.html
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