Thanks!
Michael Bayer mike...@zzzcomputing.com
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02/12/2010 10:48 AM
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Re: [sqlalchemy] Oracle in clause limit
grach wrote:
Hello all,
I'm relatively new to SQLAlchemy - is there any elegant workaround
that SQLAlchemy provides for queries with in clause that contains more
than 1000 items?
I have, say, date, item, value table that I'd like to query for
arbitrary set of dates and items (date and item list is provided by
the user or generated by the program. (I'd like to avoid creating temp
tables with arguments and perfoming a join).
Since you don't want to use a subquery/temp table, there's no other option
except to iteratively execute N number of queries where N is (number of
items / 1000), and piece the results together.
it can be as easy as:
def select_lots_of_stuff(collection):
while collection:
items, collection = collection[:1000], collection[1000:]
for result in conn.execute(select.where(col.in_(items))):
yield result
Many thanks,
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