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Oracle® Database SQL Language Reference
12c Release 1 (12.1)

E17209-15
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STANDARD_HASH

Syntax

Description of standard_hash.gif follows
Description of the illustration standard_hash.gif

Purpose

STANDARD_HASH is a function that computes a hash value for a given expression using one of several hash algorithms that are defined and standardized by the National Institute of Standards and Technology. This function is useful for performing authentication and maintaining data integrity in security applications such as digital signatures, checksums, and fingerprinting.

You can use the STANDARD_HASH function to create an index on an extended data type column. Refer to "Creating an Index on an Extended Data Type Column" for more information.

The function returns a RAW value.

Note:

The STANDARD_HASH function is not identical to the one used internally by Oracle Database for hash partitioning.