translate function

Translate Built-in String Function
Single Character Replacement	TRANSLATE(<string>, <'list_to_match'>,<'replacements_list'>) This demo replaces all commas with vertical bars.
SELECT TRANSLATE('comma,delimited,list', ',', '|') FROM dual;
Multiple Character Replacement	The following takes a DNA sequence and returns its complement
SELECT TRANSLATE('CAG-TTT-GAC-ACA-TGG-ATC', 'ACGT', 'GATC') DNA FROM dual;
Character Replacement And Elimination	The a is replaced with an e, the h has no complement and is dropped.
SELECT TRANSLATE('So What', 'ah', 'e') FROM dual;
Eliminating Double Quotes	Capital A is replaced with capital A. The double quote is eliminated because there is no match.
SELECT TRANSLATE('"Darn double quotes "', 'A"', 'A') FROM dual;
Encryption / Decryption	In this demo a string is first encrypted then decrypted
SELECT TRANSLATE('this is a secret', 'abcdefghijklmnopqrstuvxyz', '0123456789qwertyuiop[kjhbv') FROM dual; SELECT TRANSLATE('p78o 8o 0 o42i4p', '0123456789qwertyuiop[kjhbv', 'abcdefghijklmnopqrstuvxyz') FROM dual;
Counting Vowels	In this demo the number of vowels in the string is counted
WITH data AS (SELECT 'Whose line is it anyway' line FROM dual) SELECT LENGTH(line)-LENGTH(TRANSLATE(line,'xaeiou','x')) nbVowels FROM data;