Daniele Forghieri wrote:
> Hi to all. I'm using sqlite3 with python 2.7 on windows.
>
> I use the query substitution parameters in my query but I need to pass
> part of the query to a function, something like (it's not the real
> examples, just to clarify the question):
>
> def loadAll(cursor, id, queryAdd = None):
> if queryAdd is None:
> qry = 'select * from files where catalog = ?'
> else:
> qry = 'select * from files where catalog = ? and %s' %
> (queryAdd))
>
> cursor.execute(qry, (id, ))
> ...
>
> I would like to use the query substitution even when I create, in
> another piece of code, the queryAdd part, something like:
>
> queryAdd = cursor.querySubst('enabled = ? and hide = ? and data > ?',
> (enabled, hidden, min_date, ))
>
> when the function take care of the date format, quoting the parameter
> and so on
>
> It's possible or not ?
You can use named parameters
http://docs.python.org/dev/library/sqlite3.html#cursor-objects
Your function might become (untested)
def load_all(cursor, parameters, condition="catalog = :id"):
query = 'select * from files where ' + condition
cursor.execute(query, parameters)
...
load_all(
cursor, dict(id=42, fromdate=datetime.date.today()),
condition="catalog = :id and date >= :fromdate")
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