Hi,
Is it possible to reflect from one engine and then use some of the tables
reflected as base to create tables in a second, different engine?
A possible way:
A_engine = create_engine(postgresql+psycopg2://...A...)
B_engine = create_engine(postgresql+psycopg2://...B...)
A_metadata =
Hi ,
Iam trying to use
from sqlalchemy.engine.url import URL
myDB = URL(drivername='mysql', host='localhost',
database='my_database_name',
query={ 'read_default_file' : '/path/to/.my.cnf' } )
engine = create_engine(name_or_url=
myDB)
but it is not working form me. The error I am
Hello,
I am trying to create a declarative calss, which is self referential and
uses a custom primaryjoin condition, involving other columns like a
is_deleted column:
class Item(Base):
__tablename__ = items
uuid = Column(UUID(), primary_key=True)
is_deleted = Column(Boolean,
Has support for MySQL INSERT... ON DUPLICATE KEY UPDATE been integrated
into sqlalchemy more recently?
Thanks,
Vitaly
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On Friday 07 August 2015 10:05 PM, Claudio Freire wrote:
On Fri, Aug 7, 2015 at 12:51 PM, Mike Bayer mike...@zzzcomputing.com wrote:
On 8/7/15 11:05 AM, kk wrote:
On Friday 07 August 2015 03:03 PM, Ladislav Lenart wrote:
Hello.
ORM is certainly slower. How much depends A LOT on your
On 8/7/15 5:25 PM, vitaly numenta wrote:
Has support for MySQL INSERT... ON DUPLICATE KEY UPDATE been
integrated into sqlalchemy more recently?
no.
Thanks,
Vitaly
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Dear all,
I am planning to totally revamp my rdbms model and totally migrate to
sqlalchemy.
Right now we have a lot of stored procedurs for obvious performance
benefits. However it is becoming more and more difficult to maintain
the system and also difficult to migrate existing users when
Hello.
ORM is certainly slower. How much depends A LOT on your workload. For example
bulk operations with ORM are an order of magnitude slower than raw SQL. On the
other hand, SQLAlchemy Core let's you write generative SQL queries without ORM
features which are as performant as raw SQL. Overall
On 8/7/15 10:35 AM, Brian Cherinka wrote:
Hi,
I'm trying to build an SQLalchemy ORM query dynamically based on user
selected options. Some of these options come from the same table, but
the user could select either one or both criteria to filter on. Since
I don't know which options the
Hi,
I'm trying to build an SQLalchemy ORM query dynamically based on user
selected options. Some of these options come from the same table, but the
user could select either one or both criteria to filter on. Since I don't
know which options the user will select ahead of time, I have to
On Friday 07 August 2015 03:03 PM, Ladislav Lenart wrote:
Hello.
ORM is certainly slower. How much depends A LOT on your workload. For example
bulk operations with ORM are an order of magnitude slower than raw SQL. On the
other hand, SQLAlchemy Core let's you write generative SQL queries
On Fri, Aug 7, 2015 at 12:05 PM, kk krm...@gmail.com wrote:
On Friday 07 August 2015 03:03 PM, Ladislav Lenart wrote:
Hello.
ORM is certainly slower. How much depends A LOT on your workload. For
example
bulk operations with ORM are an order of magnitude slower than raw SQL. On
the
other
On Fri, Aug 7, 2015 at 12:51 PM, Mike Bayer mike...@zzzcomputing.com wrote:
On 8/7/15 11:05 AM, kk wrote:
On Friday 07 August 2015 03:03 PM, Ladislav Lenart wrote:
Hello.
ORM is certainly slower. How much depends A LOT on your workload. For
example
bulk operations with ORM are an order
Hi there,
I'm trying to do something pretty weird. I have SQLAlchemy instrumented
classes that extend a class in addition to Base, like so:
class Region(Base, t_Region):
__tablename__ = 'region'
id = Column(
mysql.INTEGER(11),
primary_key=True,
nullable=False,
On 8/7/15 2:10 PM, buch...@gmail.com wrote:
Hi there,
I'm trying to do something pretty weird. I have SQLAlchemy
instrumented classes that extend a class in addition to Base, like so:
class Region(Base, t_Region):
__tablename__ = 'region'
id = Column(
mysql.INTEGER(11),
Thanks for the insights! I'll carry on with this and see what I can make
happen.
I'm not able to introduce a factory pattern at the point Region object is
created
without monkeypatching an external library. However, I'm now going to
explore
instrumenting that class using mapper() instead of
On 8/7/15 11:05 AM, kk wrote:
On Friday 07 August 2015 03:03 PM, Ladislav Lenart wrote:
Hello.
ORM is certainly slower. How much depends A LOT on your workload. For
example
bulk operations with ORM are an order of magnitude slower than raw
SQL. On the
other hand, SQLAlchemy Core let's
On 8/7/15 5:05 PM, SElsner wrote:
Hello,
I am trying to create a declarative calss, which is self referential
and uses a custom primaryjoin condition, involving other columns like
a is_deleted column:
class Item(Base):
__tablename__ = items
uuid = Column(UUID(),
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