UPPER function - Amazon Redshift
SyntaxArgumentsReturn typeExamples

UPPER function

Converts a string to uppercase. UPPER supports UTF-8 multibyte characters, up to a maximum of four bytes per character.

Syntax

UPPER(string)

Arguments

string

The input parameter is a VARCHAR string or any other data type, such as CHAR, that can be implicitly converted to VARCHAR.

Return type

The UPPER function returns a character string that is the same data type as the input string. For example, the function will return a VARCHAR string if the input is a VARCHAR string.

Examples

The following example uses data from the CATEGORY table in the TICKIT sample database. For more information, see Sample database.

To convert the CATNAME field to uppercase, use the following. 

SELECT catname, UPPER(catname) 
FROM category 
ORDER BY 1,2;

+-----------+-----------+
|  catname  |   upper   |
+-----------+-----------+
| Classical | CLASSICAL |
| Jazz      | JAZZ      |
| MLB       | MLB       |
| MLS       | MLS       |
| Musicals  | MUSICALS  |
| NBA       | NBA       |
| NFL       | NFL       |
| NHL       | NHL       |
| Opera     | OPERA     |
| Plays     | PLAYS     |
| Pop       | POP       |
+-----------+-----------+