I have a mapper defined as
mapper(HierNode, HierTable, properties={
'tools' : relation(ToolNode),
})
Usually I am interested in iterating over all 'tools' and lazy loading
works fine. However sometimes I need to determine if one HierNode
has tools or not. Loading all tools would be too expensive for a has_tools
property. It would be enough to check for only one tools (LIMIT 1) and
return True/False. Is there any way to achieve that?
Andreas
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