Hi Simon,
you are absolutely correct, I just thought may be its something so obvious
that some experienced people immediately see. I am sorry about not being in
a position to put enough data.
But luckily, I found out that the problem was only this that I was writing
a parameter in the wrong c
Trying to diagnose a problem with a query when we don't have any way
to run it for ourselves or sample data to run it against, is very
difficult. If you want more help, I think you're going to need to
produce a self-contained script with your table definitions and some
sample data, that runs agains
@Mike, Jonathan and Simon - Thank you so much for all your efforts. I hope
I can fix the problem soon in the dialect :-)
P.s. I have finally been able to generate the correct query, but now
currently the problem is that I get no result, although the query is
absolutely correct and should give b
Dialects can completely affect the generation of SQL strings and the odd
pattern of FILTER (WHERE ... ) shown in your output suggests this is the
case as SQLAlchemy does not generate any such content ; there is no
"FILTER" keyword in SQLAlchemy.
On Wed, Apr 18, 2018, 11:20 AM su-sa wrote:
>
> Bu
Hi,
Thanks for your time, probably you are all right.
Greetings,
Sugandha
--
SQLAlchemy -
The Python SQL Toolkit and Object Relational Mapper
http://www.sqlalchemy.org/
To post example code, please provide an MCVE: Minimal, Complete, and Verifiable
Example. See http://stackoverflow.com/h
Hi,
Thanks a lot for your time, I have been work on and with that dialect for
sometime, but probably you are all correct.
Greetings,
Sugandha
--
SQLAlchemy -
The Python SQL Toolkit and Object Relational Mapper
http://www.sqlalchemy.org/
To post example code, please provide an MCVE: Mini
On Wednesday, April 18, 2018 at 11:20:39 AM UTC-4, su-sa wrote:
>
>
> But if I am not mistaken, the from clause of the query is generated by
> SQLAlchemy and the database driver or the dialect has no influence on this
> from clause generation of SQLAlchemy.
>
As an aside from everything Simon
q2 = session.query(Supplier.s_acctbal, Supplier.s_name, Nation.n_name,
Part.p_partkey, Part.p_mfgr,
Supplier.s_address, Supplier.s_phone,
Supplier.s_comment).filter(Part.p_partkey == Partsupp.ps_partkey,
Supplier.s_suppkey== Partsupp.ps_suppkey, Part.p_size
I am not sure what you mean exactly, am I applying the .correlate at the
wrong place ? Thats the query I am trying to reproduce.
select top 100
s_acctbal,
s_name,
n_name,
p_partkey,
p_mfgr,
s_address,
s_phone,
s_comment
from
sf10.c_part, sf10.c_supplier, sf10.
Ah, I didn't notice this part of your query:
.filter(..., Partsupp.ps_supplycost ==
session.query(func.min(Partsupp.ps_supplycost)))
I'm not sure exactly what SQL you are aiming for there, but I think
you need to add .correlate (or maybe .correlate_except) to that inner
query.
Simon
On Wed, Ap
Hi Simon,
I am executing q2 on its own, may be I shouldnt have mentioned correlate,
but if I dont mention it I get another error:
sqlalchemy.exc.InvalidRequestError: Select statement 'SELECT
min(partsupp.ps_supplycost) AS min_1
FROM partsupp, part, supplier, nation, region
WHERE part.p_partkey
Are you executing q2 on it's own, or nested in a larger query? If so,
can you show the code for the larger query.
I ask because you are calling ".correlate(Partsupp, Supplier, Nation,
Region)", which I think has the effect of removing those tables from
the FROM clause, in the assumption that they
But if I am not mistaken, the from clause of the query is generated by
SQLAlchemy and the database driver or the dialect has no influence on this
from clause generation of SQLAlchemy.
And as you can see, the wrong from clause in generated in the subquery:
AS min_1 \nFROM part \nWHERE part.p_
unfortunately this issue is related to that database /drivers so you'd
need to get support from those folks.
On Wed, Apr 18, 2018 at 10:37 AM, su-sa wrote:
> Hi Mike,
>
> 'hdbcli' is the official python driver for SAP HANA and you are right that
> it is not open-source. I also tried with pyhdb:
>
Hi Mike,
'hdbcli' is the official python driver for SAP HANA and you are right that
it is not open-source. I also tried with pyhdb:
q2 = session.query(Supplier.s_acctbal, Supplier.s_name, Nation.n_name,
Part.p_partkey, Part.p_mfgr,
Supplier.s_address, Supplier.s_phone,
Suppl
Hi Mike,
'hdbcli' is the official python driver and you are right that it is not
open-source. I also tried with pyhdb:
q2 = session.query(Supplier.s_acctbal, Supplier.s_name, Nation.n_name,
Part.p_partkey, Part.p_mfgr,
Supplier.s_address, Supplier.s_phone,
Supplier.s_comme
On Wednesday, 18 April 2018 15:50:10 UTC+2, Mike Bayer wrote:
>
> what the heck is FILTER?I am googling for "hdbcli" and not getting
> a clear signal back, it's not even on pypi, seems to be related to SAP
> but I can find no source links or anything (there seems to be a
> competing driver
what the heck is FILTER?I am googling for "hdbcli" and not getting
a clear signal back, it's not even on pypi, seems to be related to SAP
but I can find no source links or anything (there seems to be a
competing driver PyHDB that is more open source friendly).This
would be an issue with tha
On Wednesday, 18 April 2018 12:18:51 UTC+2, su-sa wrote:
>
>
>
> Hi everyone,
>
> I've been trying quite a while to reproduce the following query:q2 = text(
> "select top 100 s_acctbal, s_name, n_name, p_partkey, p_mfgr, s_address,
> s_phone, s_comment from system.part, "
> "system.suppl
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