Join not Query not working

SQL++
1

A SubQuery is showing the result. but the same query after joins not showing output. please correct me.

Below query is giving result:

SELECT p.proposal.proposalNo
FROM data p
WHERE p.type_='Policy' and p.proposal.proposalNo 
IN (select  raw  t.taskAttrs.proposalNumber from data t where t.type_='Task' )

Below query is not giving result after join

SELECT p.proposal.proposalNo FROM data ta
INNER JOIN data p ON
ta.proposalNo.proposalNumber =p.proposal.proposalNo
WHERE ta.type_='Task' AND p.type_='Pol'
2

The both are not equivalent. It will work. If still has problem post the both the documents

t.taskAttrs.proposalNumber vs ta.proposalNo.proposalNumber

https://blog.couchbase.com/ansi-join-support-n1ql/