Re: [sqlalchemy] Documentation options

2019-03-26 Thread Rich Shepard

On Thu, 21 Mar 2019, Mike Bayer wrote:


sounds like automap:
https://docs.sqlalchemy.org/en/latest/orm/extensions/automap.html


Mike,

May I send you models.py (off the mail list) to check that I have correctly
applied automap?

TIA,

Rich

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The Python SQL Toolkit and Object Relational Mapper


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Re: [sqlalchemy] RAW SQL working on Postgres but not in SQLAlchemy

2019-03-26 Thread Piyush Nalawade
Big thanks. Learned something new.

On Tue, Mar 26, 2019, 11:24 PM Jonathan Vanasco  wrote:

>
>
> On Tuesday, March 26, 2019 at 1:46:37 PM UTC-4, Piyush Nalawade wrote:
>>
>> Hi Mike,
>>
>> In the above example does the text and params help to protect from SQL
>> injection attacks?
>>
>
> yes.
>
> see
> https://docs.sqlalchemy.org/en/latest/core/sqlelement.html?#sqlalchemy.sql.expression.text
>  on
> how the raw text is handled
>
> in terms of params,
> https://docs.sqlalchemy.org/en/latest/core/sqlelement.html?#sqlalchemy.sql.expression.ClauseElement.params
>
> passing the values in via `params` invokes the database support for bind
> parameters, which is what protects you from sql injection in values passed
> in.
>
> --
> 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/help/mcve for a full
> description.
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http://www.sqlalchemy.org/

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Re: [sqlalchemy] RAW SQL working on Postgres but not in SQLAlchemy

2019-03-26 Thread Jonathan Vanasco


On Tuesday, March 26, 2019 at 1:46:37 PM UTC-4, Piyush Nalawade wrote:
>
> Hi Mike, 
>
> In the above example does the text and params help to protect from SQL 
> injection attacks?  
>

yes.

see 
https://docs.sqlalchemy.org/en/latest/core/sqlelement.html?#sqlalchemy.sql.expression.text
 on 
how the raw text is handled

in terms of params,  
https://docs.sqlalchemy.org/en/latest/core/sqlelement.html?#sqlalchemy.sql.expression.ClauseElement.params

passing the values in via `params` invokes the database support for bind 
parameters, which is what protects you from sql injection in values passed 
in.

-- 
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 
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Re: [sqlalchemy] RAW SQL working on Postgres but not in SQLAlchemy

2019-03-26 Thread Piyush Nalawade
Hi Mike,

And also to avoid using format, right ?

Thanks and Regards,
Piyush Nalawade

On Tue, Mar 26, 2019, 11:16 PM Piyush Nalawade 
wrote:

> Hi Mike,
>
> In the above example does the text and params help to protect from SQL
> injection attacks?
>
> On Tue, Mar 26, 2019, 11:04 PM Mike Bayer 
> wrote:
>
>> this would suggest your Engine is not accessing the same database, or
>> does not have the same permissions, as that of your PG admin session.
>>
>> also I would strongly advise against directly substituting variables
>> into literals in SQL strings using format() as this is the source of
>> SQL injection attacks.  Please use a bound parameter, e.g.:
>>
>> execute(text("select * from table where foo = :bar").params(bar='some
>> bar'))
>>
>>
>>
>> On Tue, Mar 26, 2019 at 12:19 PM Scheck David  wrote:
>> >
>> > Hi,
>> >
>> > I've a simple query as this :
>> >
>> > def count_references(self, uri):
>> > sql = 'SELECT count(*) FROM (SELECT image.id,
>> json_array_elements(image.uri_reference)::text as uri_ref FROM image) ss
>> WHERE ss.uri_ref = \'\"{0}\"\''.format(uri)
>> > result = self.session.execute(text(sql))
>> >
>> > I tested It on pgadmin and all works very good. and SQLAlchemy is
>> throwing an error as :
>> >
>> > sqlalchemy.exc.ProgrammingError: (psycopg2.ProgrammingError) relation
>> "image" does not exist
>> >
>> > LINE 1: ...ements(image.uri_reference)::text as uri_ref FROM image) ss
>> ...
>> >
>> > --
>> > 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/help/mcve for a full
>> description.
>> > ---
>> > You received this message because you are subscribed to the Google
>> Groups "sqlalchemy" group.
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>> an email to sqlalchemy+unsubscr...@googlegroups.com.
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>> > Visit this group at https://groups.google.com/group/sqlalchemy.
>> > For more options, visit https://groups.google.com/d/optout.
>>
>> --
>> 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/help/mcve for a full
>> description.
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>> For more options, visit https://groups.google.com/d/optout.
>>
>

-- 
SQLAlchemy - 
The Python SQL Toolkit and Object Relational Mapper

http://www.sqlalchemy.org/

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Re: [sqlalchemy] RAW SQL working on Postgres but not in SQLAlchemy

2019-03-26 Thread Piyush Nalawade
Hi Mike,

In the above example does the text and params help to protect from SQL
injection attacks?

On Tue, Mar 26, 2019, 11:04 PM Mike Bayer  wrote:

> this would suggest your Engine is not accessing the same database, or
> does not have the same permissions, as that of your PG admin session.
>
> also I would strongly advise against directly substituting variables
> into literals in SQL strings using format() as this is the source of
> SQL injection attacks.  Please use a bound parameter, e.g.:
>
> execute(text("select * from table where foo = :bar").params(bar='some
> bar'))
>
>
>
> On Tue, Mar 26, 2019 at 12:19 PM Scheck David  wrote:
> >
> > Hi,
> >
> > I've a simple query as this :
> >
> > def count_references(self, uri):
> > sql = 'SELECT count(*) FROM (SELECT image.id,
> json_array_elements(image.uri_reference)::text as uri_ref FROM image) ss
> WHERE ss.uri_ref = \'\"{0}\"\''.format(uri)
> > result = self.session.execute(text(sql))
> >
> > I tested It on pgadmin and all works very good. and SQLAlchemy is
> throwing an error as :
> >
> > sqlalchemy.exc.ProgrammingError: (psycopg2.ProgrammingError) relation
> "image" does not exist
> >
> > LINE 1: ...ements(image.uri_reference)::text as uri_ref FROM image) ss
> ...
> >
> > --
> > 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/help/mcve for a full
> description.
> > ---
> > You received this message because you are subscribed to the Google
> Groups "sqlalchemy" group.
> > To unsubscribe from this group and stop receiving emails from it, send
> an email to sqlalchemy+unsubscr...@googlegroups.com.
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> > Visit this group at https://groups.google.com/group/sqlalchemy.
> > For more options, visit https://groups.google.com/d/optout.
>
> --
> 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/help/mcve for a full
> description.
> ---
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>

-- 
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/help/mcve for a full description.
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Re: [sqlalchemy] RAW SQL working on Postgres but not in SQLAlchemy

2019-03-26 Thread Mike Bayer
this would suggest your Engine is not accessing the same database, or
does not have the same permissions, as that of your PG admin session.

also I would strongly advise against directly substituting variables
into literals in SQL strings using format() as this is the source of
SQL injection attacks.  Please use a bound parameter, e.g.:

execute(text("select * from table where foo = :bar").params(bar='some bar'))



On Tue, Mar 26, 2019 at 12:19 PM Scheck David  wrote:
>
> Hi,
>
> I've a simple query as this :
>
> def count_references(self, uri):
> sql = 'SELECT count(*) FROM (SELECT image.id, 
> json_array_elements(image.uri_reference)::text as uri_ref FROM image) ss 
> WHERE ss.uri_ref = \'\"{0}\"\''.format(uri)
> result = self.session.execute(text(sql))
>
> I tested It on pgadmin and all works very good. and SQLAlchemy is throwing an 
> error as :
>
> sqlalchemy.exc.ProgrammingError: (psycopg2.ProgrammingError) relation "image" 
> does not exist
>
> LINE 1: ...ements(image.uri_reference)::text as uri_ref FROM image) ss ...
>
> --
> 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/help/mcve for a full 
> description.
> ---
> You received this message because you are subscribed to the Google Groups 
> "sqlalchemy" group.
> To unsubscribe from this group and stop receiving emails from it, send an 
> email to sqlalchemy+unsubscr...@googlegroups.com.
> To post to this group, send email to sqlalchemy@googlegroups.com.
> Visit this group at https://groups.google.com/group/sqlalchemy.
> For more options, visit https://groups.google.com/d/optout.

-- 
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/help/mcve for a full description.
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[sqlalchemy] RAW SQL working on Postgres but not in SQLAlchemy

2019-03-26 Thread Scheck David
Hi,

I've a simple query as this : 

def count_references(self, uri):
sql = 'SELECT count(*) FROM (SELECT image.id, 
json_array_elements(image.uri_reference)::text as uri_ref FROM image) ss 
WHERE ss.uri_ref = \'\"{0}\"\''.format(uri)
result = self.session.execute(text(sql))

I tested It on pgadmin and all works very good. and SQLAlchemy is throwing 
an error as : 

sqlalchemy.exc.ProgrammingError: (psycopg2.ProgrammingError) relation 
"image" does not exist

LINE 1: ...ements(image.uri_reference)::text as uri_ref FROM image) ss ...

-- 
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/help/mcve for a full description.
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