HAMMING_DISTANCE

HAMMING_DISTANCE is a shorthand version of the VECTOR_DISTANCE function that calculates the hamming distance between two vectors. It takes two vectors as input and returns the distance between them as a BINARY_DOUBLE.

Syntax

Description of the illustration hamming_distance_syntax.gif

Parameters

• expr1 and expr2 must evaluate to vectors that have the same format and number of dimensions.

• HAMMING_DISTANCE returns NULL if either expr1 or expr2 is NULL.