UPPER

Returns the string with all characters converted to uppercase.

Signatures

Returns: String with all characters converted to uppercase

UPPER(string: VARCHAR) → VARCHAR

sql

Parameter	Type	Required	Description
`string`	`VARCHAR`	Yes	Input string to convert

Notes

Affects only alphabetic characters
Non-alphabetic characters remain unchanged
Handles Unicode characters correctly

Examples

FeatureQL

SELECT
    f1 := UPPER('hello world'),  -- All lowercase to uppercase
    f2 := UPPER('Mixed Case String'),  -- Mixed case to uppercase
    f3 := UPPER('abc123xyz'),  -- Letters and numbers
    f4 := UPPER('café'),  -- Unicode characters
    f5 := UPPER('123!@#')  -- Numbers and symbols unchanged
;

Result

f1 VARCHAR	f2 VARCHAR	f3 VARCHAR	f4 VARCHAR	f5 VARCHAR
HELLO WORLD	MIXED CASE STRING	ABC123XYZ	CAFÉ	123!@#

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Last update at: 2026/03/03 16:47:38

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