Sql nested select

database , sql , select Haifa, Israel
  • 6 years ago

    I have 3 tables: people, loans, and deposits people: id, name, address etc loans and deposits tables are identical: id, sum,date etc

    each person may have any number of loans or deposits, I want to know how much sum total money this person has in his account now.

    for the loans:

    select people.id,sum(loans.sum) from people INNER JOIN loans ON people.id=loans.id group by people.id

    i did the same for the deposits table

    select people.id,sum(deposits.sum) from people INNER JOIN deposits ON people.id=deposits.id group by people.id

    How can I combine these two to get ONE number for each id? I know there is something called a nested select, but I can't figure out how to add it in this case

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