Hi.
Attached patch enables throwing of errors in jsonb_path_match() in its
non-silent mode when the jsonpath expression failed to return a singleton
boolean. Previously, NULL was always returned, and it seemed to be
inconsistent with the behavior of other functions, in which structural and
other errors were not suppressed in non-silent mode.
We also think that jsonb_path_match() needs to be renamed, because its
current name is confusing to many users. "Match" name is more suitable for
jsonpath-based pattern matching like that (maybe we'll implement it later):
jsonb_path_match( '{ "a": 1, "b": 2, "c": "str" }', '{ "a": 1, "b": @ > 1, * : @.type == "string" }' )
Would be very useful for constraints.
Below are some possible name variants:
jsonb_path_predicate() (original name)
