Compose

Description: COMPOSE takes as its argument a string (or an expression that resolves to a string) in any datatype, and returns a Unicode string in its fully normalized form in the same character set as the input.

COMPOSE(<string_or_column>)
 
-- This w3mentor returns the o-umlaut code point:
 
SELECT COMPOSE ( 'o' || UNISTR('\0308') ) FROM DUAL;
 
CO
--
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