Use the same query for multiple tables - sql

Question

I have this two similar queries for different tables, one for loan_offers table and one for special_offers table
for loan_offers
#Query(
value = "SELECT " +
"CAST(o.id AS VARCHAR), o.user_id, " +
"o.partner_key, o.partner_name, " +
"o.originator_key, o.originator_name, " +
"o.type, o.response, " +
"COALESCE(lo.recommendation_score, 0) AS recommendation_score " +
"FROM offers o " +
"INNER JOIN loan_offers lo " +
"ON lo.offer_id = o.id " +
"WHERE o.created_at > EXTRACT(epoch FROM now() - INTERVAL '30' DAY) * 1000 " +
"AND o.user_id = ?1 " +
"ORDER BY recommendation_score DESC",
nativeQuery = true)
List<OffersResponse> fetchLoanOffers(String userId);
for special_offers
#Query(
value = "SELECT " +
"CAST(o.id AS VARCHAR), o.user_id, " +
"o.partner_key, o.partner_name, " +
"o.originator_key, o.originator_name, " +
"o.type, o.response, " +
"COALESCE(so.recommendation_score, 0) AS recommendation_score " +
"FROM offers o " +
"INNER JOIN special_offers so " +
"ON so.offer_id = o.id " +
"WHERE o.created_at > EXTRACT(epoch FROM now() - INTERVAL '30' DAY) * 1000 " +
"AND o.user_id = ?1 " +
"ORDER BY recommendation_score DESC",
nativeQuery = true)
List<OffersResponse> fetchSpecialOffers(String userId);
So my question is how not to write so much similar code, maybe by using UDF or there is a better solution.

Answer 1

Use a variable to declare which table you want and use the variable in the query string. Change the alias of the table to be the same and it looks like it'd be the same query.
I don't really recommend it though as they are different tables that could change and the circumstances for the need. Its better to have the defined query for its use in a business object or something.
But we do these things to save typing some times.