Create Table Subquery for a join clause - sql

Question

So the problem here is OPTION_NAME in neo_product_benefit has no relation to the other tables, but it has a relationship to the neo_claims_pmb_details table via OPTION_ID column and in the neo_claims_pmb_details table it has a BENEFIT_ID column which can be joined to the other tables.
So in short
I'm not entirely sure how the SQL would look like to get the OPTION_NAME and join it to the other tables, so I thought creating a temporary table would work and joining it and then dropping it aftewards but I have no idea how the syntax would work
Any help would be appreciated.
SELECT a.batch_id,
a.claim_id,
a.cover_no,
a.receive_date,
a.practice_no,
a.service_provider_no,
a.refering_provider_no,
b.claim_line_id,
b.dependent_code,
b.service_date_from,
b.service_date_to,
b.cheque_run_date,
b.process_date,
b.tariff_code_no,
b.tariff_amount,
b.claimed_amount,
c.amount_paid,
d.practice_name,
e.discipline,
e.discipline_description,
g.rule_no,
g.message_code,
g.long_msg_description,
h.benefit_code,
h.benefit_description,
t.option_name
FROM neo_claims a
LEFT JOIN neo_claim_line b
ON (a.claim_id = b.claim_id)
LEFT JOIN neo_claim_line_benefit c
ON (b.claim_line_id = c.claim_line_id)
LEFT JOIN neo_practice_details d
ON ( a.practice_no = d.practice_no)
LEFT JOIN neo_sub_disciplines e
ON ( d.sub_discipline = e.sub_discipline)
LEFT JOIN neo_claimline_firings g
ON (b.claim_line_id = g.claim_line_id)
LEFT JOIN neo_product_benefit h
ON (c.benefit_id = h.benefit_id)
(
SELECT i.*,
j.*
INTO temp_table
FROM neo_claims_pmb_details j,
neo_product_optin i)
LEFT JOIN temp_table t
ON ( j.benefit_id = t.benefit_id)
WHERE a.batch_id = 3496584;
DROP TABLE temp_table;

Answer 1

You could join the two table adding the related (left or inner) join .. in my sample the tables have alias tx and ty
and based on you comment for a create table
CREATE TABLE temp_table AS
SELECT a.batch_id,
a.claim_id,
a.cover_no,
a.receive_date,
a.practice_no,
a.service_provider_no,
a.refering_provider_no,
b.claim_line_id,
b.dependent_code,
b.service_date_from,
b.service_date_to,
b.cheque_run_date,
b.process_date,
b.tariff_code_no,
b.tariff_amount,
b.claimed_amount,
c.amount_paid,
d.practice_name,
e.discipline,
e.discipline_description,
g.rule_no,
g.message_code,
g.long_msg_description,
h.benefit_code,
h.benefit_description,
t.option_name,
ty.OPTION_NAME
FROM neo_claims a
LEFT JOIN neo_claim_line b ON (a.claim_id = b.claim_id)
LEFT JOIN neo_claim_line_benefit c ON (b.claim_line_id = c.claim_line_id)
LEFT JOIN neo_practice_details d ON ( a.practice_no = d.practice_no)
LEFT JOIN neo_sub_disciplines e ON ( d.sub_discipline = e.sub_discipline)
LEFT JOIN neo_claimline_firings g ON (b.claim_line_id = g.claim_line_id)
LEFT JOIN neo_product_benefit h ON (c.benefit_id = h.benefit_id)
LEFT JOIN neo_claims_pmb_details tx ON tx.BENEFIT_ID = h.benefit_id
LEFT JOIN neo_product_benefit ty ON tx.OPTION_ID = ty.OPTION_ID
LEFT JOIN temp_table t ON ( j.benefit_id = t.benefit_id)
WHERE a.batch_id = 3496584;

Answer 2

My guess is no temp table needed. Just include table expression into the original query
...
LEFT JOIN neo_product_benefit h
ON (c.benefit_id = h.benefit_id)
LEFT JOIN ( SELECT i.benefit_id, j.option_name -- correct cols as needed
FROM neo_claims_pmb_details j,
neo_product_optin i) t
ON (c.benefit_id = t.benefit_id)
WHERE a.batch_id = 3496584;