HASH

Takes one or more input parameters of any data type and returns a 64-bit non-cryptographic hash value. HASH uses the CityHash algorithm for string data types, implementation-specific algorithms for other data types, and the CityHash combinator to produce the resulting hash value. NULL values of any type get the same fixed value. See CITY_HASH if NULL values should produce NULL.

Syntax

HASH(<expression>, [, expression [,...]])

Parameters

Parameter	Description	Supported input types
<expression>	An expression that returns any data type that Firebolt supports.	Any

Return type

BIGINT

Example

SELECT HASH('esimpson', '08-25-2016')

Returns: -6,509,667,128,195,191,394

SELECT HASH(NULL, '08-25-2016')

Returns: 7610523868633494549