Oracle UPPER function
Description
The Oracle UPPER() function returns a specified character expression in UPPERCASE letters.
Syntax:
UPPER(string1)
Parameter:
| Name | Description | Data Types |
|---|---|---|
| string1 | The given character expression. | CHAR, VARCHAR2, NCHAR, NVARCHAR2, CLOB, or NCLOB |
Return Value Type
CHAR, VARCHAR2, NCHAR, NVARCHAR2, CLOB, or NCLOB
Note : For linguistic-sensitive uppercase, refer to NLS_UPPER.
Applies to
Oracle 12c, Oracle 11g, Oracle 10g, Oracle 9i, Oracle 8i
Pictorial Presentation
Examples: Oracle UPPER function
The following example returns each employee's last name in uppercase:
SELECT UPPER(last_name) "Uppercase"
FROM employees;
Sample Output:
Uppercase ---------------- ABEL ANDE ATKINSON AUSTIN BAER BAIDA BANDA BATES . . .
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