[GENERAL] Ranking search results using multiple fields in PostgreSQL fulltext search

[Gaini Rajeshwar]

Hi,
is there a way to rank the search results based on multiple fields in
postgreSQL?
For example,
i have *title*, *abstract*, *summary*, *body* as fields/columns in my
database. When user searches on *title*, i want to rank the results based on
*title* field as well as *summary* field, where importance(summary) >
importance(title). But the results should be exactly matching the terms in
"title" rather than "title" OR "summary"