On Thu, Jan 18, 2018 at 12:31 PM, Lukasz Szybalski <szybal...@gmail.com> wrote:
> Hello, > I have a query in sqlalchemy like below where I lookup contract# in mssql. > How do I enforce the varchar instead of nvarchar? I tried converting my > field to "str(mycurrent)" but that didn't do anything. Is there some other > spot to force VARCHAR to be sent? > this just came up in https://bitbucket.org/zzzeek/sqlalchemy/issues/4161/sql-server-string-use-case, in that case they are using typed parameters: String(50, convert_unicode='force') if you're dealing w/ the raw string like that try this: execute(text("select ... where foo = :mycurrent").bindparams(bindparam("mycurrent", type_=String(convert_unicode='force'))) let me know if that works b.c. this has to be in the docs > > You can find that the query that uses NVARCHAR does an index scan has > 30,909 logical reads on the dbo.P table. It also uses 890 ms of CPU and > has a total elapsed time of 938 ms. > > The query that uses VARCHAR does an index seek and has 7 logical reads on > the dbo.P table. It uses 0 ms of CPU and has a total elapsed time of 11 ms. > > > p=*session.execute*("select PZ.p_id,PZ.pimage_num from dbo.P > with(nolock) inner join dbo.PZ PZ with(nolock) on PZ.p_id = p.p_id inner > join dbo.D D with(nolock) on D.p_id = p.p_id AND D.pimage_num=PZ.pimage_num > where p.current=:mycurrent and D.srtype_id =5",params={'mycurrent':str( > mycurrent)}).fetchall() > > > > > > [image: Inline image 1] > > > > > Thank you > > Lucas > > > > > -- > http://lucasmanual.com/ <http://lucasmanual.com/blog/> > > -- > 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. --- 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.
