Oracle PL/SQL/Conversion Functions/CONVERT

CONVERT() converts between two different character sets. The returned value"s data type is VARCHAR2.

 
Syntax: CONVERT(<character_expression>, <target_charset> [,<source_charset>])

SQL>
SQL>
SQL>
SQL> SELECT
  2     CONVERT ("&Auml;", "US7ASCII")  ascii_a
  3  FROM dual;
A
-
Z