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 .

IS_FLOAT function

Checks whether a value is a floating point number. The IS_FLOAT function returns true for floating point numbers (FLOAT4 and FLOAT8). The function returns false for any other values.

The set of IS_DECIMAL the set of IS_FLOAT are disjoint.

Syntax

IS_FLOAT(super_expression)

Arguments

Return type

BOOLEAN

Examples

To check if 2.22::FLOAT is a FLOAT using the IS_FLOAT function, use the following example.

CREATE TABLE t(s SUPER);

INSERT INTO t VALUES(2.22::FLOAT);

SELECT s, IS_FLOAT(s) FROM t;

+---------+----------+
|    s    | is_float |
+---------+----------+
| 2.22e+0 | true     |
+---------+----------+