|Oracle9i SQL Reference
Release 1 (9.0.1)
Part Number A90125-01
Functions, 34 of 166
DECOMPOSE takes as its argument a string in any datatype, and returns a unicode string after canonical decomposition in the same character set as the input.
string can be any of the datatypes
NCLOB. For example, an o-umlaut codepoint will be returned as the "o" codepoint followed by an umlaut codepoint.
Oracle9i Database Concepts for information on unicode character sets and character semantics
The following example decomposes the string "Châteaux" into its component codepoints: