TRANSLATE is an Oracle SQL function that will convert a sequence of characters in a string (the match list) to the corresponding characters in a second sequence of characters (the replacement list). Note that it replaces a single character at a time according to position. The first character in the match list is replaced by the first character in the replacement list. The second character with the second, etc. If there are characters left in the match list that do not have positional equivalents in the replacements list, they are deleted.
Replace all spaces with underscores:
SELECT translate('I am here',' ','_') FROM dual; TRANSLATE --------- I_am_here
Replace vertical bars with commas:
SELECT TRANSLATE('field1|field2|field3', '|', ',') FROM dual TRANSLATE('FIELD1|FI -------------------- field1,field2,field3
Remove spaces from a string. Note that the replacement list cannot be NULL, hence the dummy character, $. The space is not in the replacement list, and is hence deleted.
SELECT translate('I am here','$ ','$') FROM dual; TRANSLA ------- Iamhere
Replace accented characters with its base characters:
SELECT translate('aàeéêèiñoô','àéêèñô','aeeeno') FROM dual; TRANSLATE('A??E? ---------------- aaaeaaaaaaiaaoaa