MarkLogic 12 EA 1 Product Documentation
xdmp:subbinary

xdmp:subbinary(
   $source as binary(),
   $starting-location as xs:double,
   [$length as xs:double]
) as binary()

Returns a binary node made up of a subset of the given binary node.

Parameters
source	A binary node whose subset will be returned
starting-location	The new binary node starts at the byte position indicated by starting-location. The first byte is at location 1.
length	The length in bytes of the new binary node.

Usage is exactly like fn:substring except that it applies to a binary node rather than a string.

  data(xdmp:subbinary(binary { xs:hexBinary("DEADBEEF") }, 3, 2))
  => xs:hexBinary("BEEF")

MarkLogic 12 EA 1 Product Documentationxdmp:subbinary