SQL query to retrieve families with only one generation from a family db
728024Oct 14 2009 — edited Oct 14 2009Hi,
I need to write an SQL query that would select families with only one generation ((which means a person - or a married couple - with kids) or (a person - or a married couple - with parents but no kids)) from a database containing families. The simplified db structure is:
person:
id - int, primary key
siblings:
id
parent_id
kid_id
marriage
id:
husband_id
wife_id
Could anyone please help me? I dont really have any idea how to accomplish that...