There are a number of special characters that needs to be escaped (protected), if you want to include them in a character string. Here are some basic character escaping rules:

► The escape character () needs to be escaped as ().

► The single quote (') needs to be escaped as (') or ('') in single-quote quoted strings.

► The double quote (") needs to be escaped as (") or ("") in double-quote quoted strings.

► The wild card character for a single character (_) needs to be escaped as (_).

► The wild card character for multiple characters (%) needs to be escaped as (%).

► The tab character needs to be escaped as ( ).

► The new line character needs to be escaped as ( ).

► The carriage return character needs to be escaped as ( ).

Here are some examples of how to include special characters:

SELECT 'It''s Sunday!' FROM DUAL;

It's Sunday!

SELECT 'Allo, C'est moi.' FROM DUAL;

Allo, C'est moi.

SELECT 'Mon Tue Wed Thu Fri' FROM DUAL;

 Mon Tue  Wed  Thu  Fri