On 8/29/15 7:13 AM, Martin Marrese wrote:
On Fri, Aug 28, 2015 at 8:16 PM, <ma...@tokbox.com
<mailto:ma...@tokbox.com>> wrote:
Hi,
I am trying to generate sql scripts in offline mode. But when
executing the delete in the following manner:
op.execute(
foo.delete().where(foo.c.key == 'bar')
)
generates sql as
DELETE FROM foo WHERE foo.`key` = %s;
How can i get the actual value 'bar' instead of %s? Is there a
better way to do this ? If I use raw sql statements I can get
around the problem although I am trying my best to not execute raw
sql statements in there.
That is ok, %s is later replaced with 'bar'.
For instance, this is the log I get when querying a table named role
filtering by id. The python code is :
role = session.query(model.Role).get(id_)
for --sql mode you can add the literal_binds flag to your environment
which will attempt to render those inline:
http://alembic.readthedocs.org/en/latest/api/runtime.html?highlight=literal_binds#alembic.runtime.environment.EnvironmentContext.configure.params.literal_binds
otherwise you can specify literal values using the inline_literal()
construct:
http://alembic.readthedocs.org/en/latest/ops.html?highlight=inline_literal#alembic.operations.Operations.inline_literal
And the log entries are :
2015-08-29 08:01:53,461 INFO sqlalchemy.engine.base.Engine SELECT
role.id <http://role.id> AS role_id, role.name <http://role.name> AS
role_name, role.is_admin AS role_is_admin
FROM role
WHERE role.id <http://role.id> = %s
2015-08-29 08:01:53,462 INFO sqlalchemy.engine.base.Engine (2L,)
The first line shows the query to be executed with %s as place holder
for the parameters. The second line shows the parameters that will
replace each %s.
Martín
--
Martín
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