On Fri, Dec 21, 2018 at 11:29 AM mdob <[email protected]> wrote: > > Hi, > > I was looking into create_engine options enocding and convert_unicode and it > seems it works for ORM but not for executing raw sql. > Is that intentional or I'm missing something?
the MySQL DBAPIs already handle unicode conversion by default, and as your URLs do not include ?use_unicode=0 (which is a flag specific to pymysql, mysqlclient and mysql-python DBAPIs), this capability is turned on. This flag used to be documented in the SQLAlchemy docs but as there is no reason to use use_unicode=0 with modern DBAPIs, these docs have been removed. The SQLAlchemy convert_unicode flag, which should be considered very legacy at this point, doesn't do anything if the DBAPI is already doing unicode conversion for us, unless you send convert_unicode='force'. This is documented at https://docs.sqlalchemy.org/en/latest/core/type_basics.html#sqlalchemy.types.String.params.convert_unicode. But as the docs should indicate, perhaps not strongly enough, there is no reason to use this flag with modern DBAPIs, all of which now natively support unicode. > > from sqlalchemy import create_engine > from sqlalchemy.orm import Session > from sqlalchemy.ext.automap import automap_base > from sqlalchemy.sql import text > > def get_first_name(engine): > row = engine.execute(text('SELECT FirstName FROM Customer LIMIT > 1')).fetchone() > print row[0] > > Base = automap_base() > Base.prepare(engine, reflect=True) > Customer = Base.classes.Customer > c1 = Session(engine).query(Customer).first() > print c1.FirstName > print 5*'--' > > > engine = create_engine('mysql://chinook:[email protected]:3309/Chinook') > unicode_engine = > create_engine('mysql://chinook:[email protected]:3309/Chinook', > encoding='latin1', convert_unicode=True) > > get_first_name(engine) > get_first_name(unicode_engine) > > > The output was > Lu�s > Lu�s > ---------- > Lu�s > Luís > ---------- > > Kind regards, > Michal > > -- > 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 [email protected]. > To post to this group, send email to [email protected]. > 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 [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/sqlalchemy. For more options, visit https://groups.google.com/d/optout.
