I prefer to have a server side solution... but cant find a generic one.
On Monday, June 10, 2013 4:46:54 PM UTC+3, Michael Bayer wrote:
Oh. Well a python side rule is very different from a server side rule,
but if app side is all you need then sure you have a lot of options there.
Use a
Hi
I am looking for a portable solution - A solution that will work when I
switch from DB A to DB B.
so I do not want to include any MySQL specific code.
CheckConstraint looks promising.. but you mentioned it is not supported by
MySQL.
Any other ideas?
Thanks
Avishay
On Monday, June 10, 2013
How about using UserDefinedType
http://docs.sqlalchemy.org/en/rel_0_8/core/types.html#sqlalchemy.types.UserDefinedType
and
declare a type 'NonNegativeInteger'.
Will it be enough to protect the table from negative integers?
On Monday, June 10, 2013 10:19:21 AM UTC+3, Avishay Balderman wrote:
Oh. Well a python side rule is very different from a server side rule, but if
app side is all you need then sure you have a lot of options there. Use a
TypeDecorator, check the docs there are many examples.
Sent from my iPhone
On Jun 10, 2013, at 4:30 AM, Avishay Balderman
Am 10.06.2013, 15:46 Uhr, schrieb Michael Bayer mike...@zzzcomputing.com:
Oh. Well a python side rule is very different from a server side rule,
but if app side is all you need then sure you have a lot of options
there. Use a TypeDecorator, check the docs there are many examples.
FWIW
Hi
I would like to create a table with an integer column.
This column value must be = 0.
How can I enforce it using table defintion?
i have looked here and it looks fine.
http://docs.sqlalchemy.org/en/rel_0_8/core/schema.html?highlight=checkconstraint#sqlalchemy.schema.CheckConstraint
Will it work
from sqlalchemy.dialects.mysql import INTEGER as Integer
my_int = Column(Integer(unsigned=True))
from:
http://blog.luhn.com/post/20919696026/unsigned-integers-with-sqlalchemy-and-mysql
Keep in mind, as Theron notes on his blog post, that this is MySQL specific
so you won't have compatibility
have you considered just using an UNSIGNED INT ? MySQL offers support for such
types.
The CHECK constraint is a good way to go as well, but unfortunately I believe
MySQL does not actually enforce CHECK constraints (funny, huh?) . Here's an SO
question regarding that issue:
