Services or capabilities described in Amazon Web Services documentation might vary by Region. To see the differences applicable to the China Regions, see Getting Started with Amazon Web Services in China (PDF).

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     |
+---------+----------+