Michael, thank you for you reply, I expected you to mention from_self :) I
know about it, it is a handy trick indeed
But I deliberately don't use it, because this way I don't know how to
mention a column which I want to filter on
This is due to the fact, that it is calculated i.e. there is no
Ok, I seemed to figure out how to deal with it -
row_number_column = func.row_number().over(
partition_by=Recipe.id
).label('row_number')
query = query.add_column(
row_number_column
)
query = query.from_self().filter(row_number_column == 1)
Using an explicit column construct
суббота, 25
On 4/25/15 6:05 AM, Юрий Пайков wrote:
Ok, I seemed to figure out how to deal with it -
|
row_number_column = func.row_number().over(
partition_by=Recipe.id
).label('row_number')
query = query.add_column(
row_number_column
)
query = query.from_self().filter(row_number_column == 1)
|
q = session.query(Recipe, func.avg(Recipe.field1).over(...)).join(...) I have a query which selects some mapped entity as well as other columns. I then refer to the name of that entity when working with the result of the query:for entry in q.all(): recipe=entry.Recipe Now, I want to add
On 4/24/15 5:25 PM, Пайков Юрий wrote:
q = session.query(Recipe, func.avg(Recipe.field1).over(...)).join(...)
I have a query which selects some mapped entity as well as other columns.
I then refer to the name of that entity when working with the result
of the query:
for entry in q.all():
