Hello,

While experimenting with jsquery, I encountered the following problem:

contrib_regression=# select 'NOT similar_product_ids.#: (NOT $ = "0440180295")'::jsquery::text::jsquery;
ERROR: bad jsquery representation
DETAIL: syntax error, unexpected NOT_P at or near " "

So, jsquery_in() fails to parse back the output generated by jsquery_out().

The problem seems to be with the jsquery_out(), which fails to add parenthesis around the expression:
contrib_regression=# select 'NOT similar_product_ids.#: (NOT $ = "0440180295")'::jsquery::text;

text

NOT ("similar_product_ids".#:NOT ($ = "0440180295"))
(1 row)

AFAICS jsquery_in() expects a parenthesis around the inner expression starting with 'NOT'. FWIW the attached patch fixes the problem for me, but I'm not sure if we should fix jsquery_out() or teach jsquery_in() to accept the above format.

Thanks,
Pavan
jsquery_in_out.txt