To convert a string to uppercase, use the upper()
function in Oracle. Below are the syntax and examples:
UPPER Function Syntax
upper(char)
UPPER Function Examples
The following SQL query converts a string to uppercase using the upper() function:
select upper('oracle') from dual;
Output:
ORACLE
Using UPPER Function in PL/SQL Program
Below PL/SQL code demonstrates, how to convert a string to uppercase in the program unit:
Declare v_string varchar2(100) := 'oracle'; begin v_string := upper(v_string); dbms_output.put_Line(v_string); end;
Output
ORACLE