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Identifier and Checksum

AMPS includes functions that generate identifiers and compute checksums. These functions are useful for creating unique values, creating a shortened representation of a string, or providing input for a MOD calculation.

UUID7​

UUID7​

UUID7()

Generates a unique identifier (UUID) in the version 7 format specified by RFC 9562.

info

This function is non-deterministic, and cannot be used in contexts that require a deterministic function.

Parameters

None.

Returns

The identifier is returned as a formatted string.

MD5​

MD5​

MD5(string)

Returns the MD5 checksum of the provided string.

Parameters

  • string: The string to checksum.

Returns

The MD5 checksum of the string.

Example

MD5(/data)
CRC32​

CRC32​

CRC32(string)

Returns a 32-bit integer calculated as a checksum of the provided string. This function uses CRC32-C to create the result. If a NULL value is provided, this function returns a constant value.

Parameters

  • string: The string to calculate the checksum for.

Returns

A 32-bit integer checksum.

CRC64​

CRC64​

CRC64(string)

Returns a 64-bit integer calculated as a checksum of the provided string. This function uses a polynomial of 0x95AC9329AC4BC9B5 to create the result. If a NULL value is provided, this function returns a constant value.

Parameters

  • string: The string to calculate the checksum for.

Returns

A 64-bit integer checksum.