How to initialize a NULL query
My query should be ANDed with various tables depending on arguments I
receive.
Like:
if arg1 == "xyz":
query = (db.abc.id > 0)
if arg2 == "xyz":
query = (db.def.id > 0) & query
In my "second if" condition, if "first if" condition is not executed,
error occurs that query is not initialised. How to tackle this ?
On Dec 30, 10:51 pm, mdipierro <mdipie...@cs.depaul.edu> wrote:
> This:
>
> query = (-1)
>
> is not a valid query. The fact it works with sqlite is a miracle.
>
> On Dec 30, 11:43 am, vvk <varunk.ap...@gmail.com> wrote:
>
> > query = (-1)
> > query = (db.somedb.id > 0) & query
>
> > This querying worked with SQLITE. But it's giving following error with
> > postgres:
>
> > ProgrammingError: argument of AND must be type boolean, not type
> > integer
> > LINE 1: ...rchase WHERE (purchase.timeofpurchase<='2009-12-29' AND
> > -1);
>
> > i) I think there is problem with type conversions, is there a way
> > out ?
>
> > ii) Is there a way to initialize a NULL query (like query = (-1) I did
> > earlier ?)
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