I need to do an update like this:
connection.execute('update orders set priority = priority - 1 where priority
>= :priority', priority=order.priority)
I am using explicit sessions, so trying
connection = session.connection()
But, I was looking at
http://www.sqlalchemy.org/docs/sqlconstruction.myt#sql_update
And trying to figure out how to do something like:
Orders.update(
Orders.c.priority >= priority,
values={Orders.c.priority:Orders.c.priority+1}
)
First, I don't expect that update to work because adding 1 to a column doesn't
make sense, and second I couldn't see how Orders gets its engine context.
Then I see other examples like
connection.execute(Orders.update(), {values})
and I'm perplexed at what Orders.update() is returning..
--
Brad Clements, [EMAIL PROTECTED] (315)268-1000
http://www.murkworks.com
AOL-IM or SKYPE: BKClements
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