I understand that on a where clause a gin index can be used for the following 
predicate

a.data @? '$.results.docs[*].accs[*] ? (@.id == “123")

I have a join query however on the following condition

jsonb_path_exists(a.data, '$.results.docs[*].accs[*] ? (@.number == $id)', 
jsonb_build_object(‘id', b.id))  but this cannot use a gin index afaik and 
results in a seq scan.

Is there anyway to use the operator syntax above by passing the b.id 
<http://b.id/> variable somwehow so that the gin index can be used ? ? 




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