UPPER
UPPER(string)

Converts all the characters in a string to uppercase.

Example

SQL> SELECT UPPER('LIFE IS a Wonderful tHINg.') FROM dual;

UPPER('LIFEISAWONDERFULTHI
--------------------------
LIFE IS A WONDERFUL THING.

Get Oracle SQL: the Essential Reference now with the O’Reilly learning platform.

O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.