Amazon Redshift will no longer support the creation of new Python UDFs starting November 1, 2025. If you would like to use Python UDFs, create the UDFs prior to that date. Existing Python UDFs will continue to function as normal. For more information, see the blog post .

TO_HEX function

TO_HEX converts a number or binary value to a hexadecimal representation.

Syntax

TO_HEX(value)

Arguments

Return type

VARCHAR

Examples

To convert a number to its hexadecimal representation, use the following example.

SELECT TO_HEX(2147676847);
               
+----------+
|  to_hex  |
+----------+
| 8002f2af |
+----------+

To convert the VARBYTE representation of 'abc' to a hexadecimal number, use the followign example.

SELECT TO_HEX('abc'::VARBYTE);
               
+--------+
| to_hex |
+--------+
| 616263 |
+--------+

To create a table, insert the VARBYTE representation of 'abc' to a hexadecimal number, and select the column with the value, use the following example.

CREATE TABLE t (vc VARCHAR);
INSERT INTO t SELECT TO_HEX('abc'::VARBYTE);
SELECT vc FROM t;
 
+--------+
|   vc   |
+--------+
| 616263 |
+--------+

To show that when casting a VARBYTE value to VARCHAR the format is UTF-8, use the following example.

CREATE TABLE t (vc VARCHAR);
INSERT INTO t SELECT 'abc'::VARBYTE::VARCHAR;

SELECT vc FROM t;

+-----+
| vc  |
+-----+
| abc |
+-----+