a scalar is a value that is just one thing, as opposed to a collection.

e.g.:

x = 5   # <— scalar

x = [1, 2, 3]  # <— not a scalar

x = MyObject()   # <— scalar object (SQLA distinguishes here between object and 
non…depending on what doc you’re looking at)

x = set([MyObject(), MyObject()])  # <— not a scalar




On Feb 10, 2014, at 4:54 AM, Bao Niu <niuba...@gmail.com> wrote:

> Could someone help give a simple definition of scalar-holding attribute? In 
> documentation for many to one relationship this term occurred, I tried Google 
> the term but didn't find a definition. Thx.
> 
> 
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