It's pretty easy to insert data into a database by using sqlalchemy.
address.name = 'Joe'
address.age = 26
session.add(address)
But actually I have three tables - how can I specify the table I want to insert my data in?
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You mean three similar tables?Prof. Falken– Prof. Falken2013-05-15 08:26:38 +00:00Commented May 15, 2013 at 8:26
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2 Answers
I solved the problem by using the sql expression language to add the new row:
engine.execute(table_addresses.insert(), name='Joe', age=20)
engine.execute(table_contacts.insert(), email='[email protected]', cellnumber='267534320')
Normaly I use the ORM but in my case it is more convinient.
2 Comments
Derek 朕會功夫
If you are using a session, do
session.execute(table_addresses.insert().values(name='Joe', age=20)) instead.
Ciasto piekarz
how is this preferable over using session ? if the table is dynamically created recently will
engine.execute work ?You will probably want to look at the sqlalchemy ORM tutorial.
To get you started though, I suspect you are going to want to set up something like the following.
from sqlalchemy import Column, Integer, String
class Address(Base):
__tablename__ = 'addresses'
id = Column(Integer, primary_key=True)
name = Column(String)
age = Column(Integer)
def __init__(self, name, age):
self.name = name
self.age = age
Now since it appears you already know how to get a session, you could just do this
address = Address('Joe', 26)
session.add(address)
session.commit() # This will do the actual database insertion
Although it is possible that you could probably just try to do it on the fly, it probably wouldn't make your life easier, as you'd still have to tell it what objects relate to integers, strings, etc, to map to the database table.
6 Comments
jokober
Thats also the way I add data to my database. Assumed there are more than one tables in the database how can I specify to add the data to the table "Contacts" instead of "adresses"?
Jamie Starke
As mentioned above you could use
__tablename__ = 'addresses' you specify the table name addresses. Are you instead rather dealing with a few identical tables that have different names?Jamie Starke
What I'd probably recommend, if you have different tables, have different classes mapping them. The
__tablename__ will be used to tell it the actual table in the database to match to. For example, based on your contacts example, you'd probably replace the class line with something like class Contact(Base): and the __tablename__ line with __tablename__ = 'contacts'. Are you instead trying to fire them into different tables dynamically on the fly?jokober
Yes, I want to add them into different tables dynamically
jokober
Im not in a mapped class when I try to add the data.
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