Dynamic object construction syntax

The dynamic object construction, merges all the objects returned by the inner expression into a single object with a so-called "simple object union". A simple object union creates a new object, the pairs property of which is obtained by accumulating the pairs of all operand objects. An error jerr:JNDY0003 is raised if two pairs with the same name are encountered.

Example Query:
let $object1 :=

{ "Captain" : "Kirk" }

let $object2 :=

{ "First officer" : "Spock" }

return

{| $object1, $object2 |}

Result:

{ "Captain" : "Kirk", "First officer" : "Spock" }

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[1] http://jsoniq.org/docs/JSONiqExtensionToXQuery/html-single/index.html#idm139680686311712