Thank you Mike Bayer for your help..
On Wednesday, June 27, 2018 at 8:32:18 PM UTC+5:30, Mike Bayer wrote:
>
> On Wed, Jun 27, 2018 at 3:22 AM, arjun k >
> wrote:
> > Hi
> > i was trying to convert the below query to sqlalchemy
> >
> >
> > SELECT
> >addr_idn,
> >(SELECT MAX(LastUpdateDate)
> > FROM (VALUES (crt_dt),(upd_dt),) AS UpdateDate(LastUpdateDate))
> >AS LastUpdateDate
> > FROM (
> > select a. addr_idn,a.crt_dt crt_dt , b.upd_dt upd_dt
> > from emp_addr
> > where emp_addr.addr_idn = 1
> > ) a
> >
> >
> >
> > but i am not able to convert this into sqlalchemy. please help me out to
> > convert this query.
>
>
> the hard part here is the "FROM VALUES" which is not built-in to
> SQLAlchemy. There is a recipe at
> https://bitbucket.org/zzzeek/sqlalchemy/wiki/UsageRecipes/PGValues
> that will show how to build a "values()" function that will give you
> the VALUES() expression you're looking for.
>
> >
> > --
> > 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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