In Oracle, I would like to perform a correlated subquery where
multiple columns are specified in the set clause and those columns are
selected by the subquery. For example:
UPDATE table1 a
SET (a.column1, a.column2) = (SELECT b.column1, b.column2 FROM table2
b WHERE a.id=b.id)
WHERE
This is a completely Oracle-specific syntax I've never seen before, and
apparently resembles an UPDATE FROM - ticket #2166 has been updated to see if
it can be part of the solution when we implement the more common UPDATE FROM
extension.
Unfortunately this syntax is not supported. Your
On Monday, May 30, 2011 11:25:11 pm Michael Bayer wrote:
This is a malformed date value. SQLite has no date type so SQLA must
parse it. It assumes its only parsing strings that it created. If you're
artificially generating strings to be used with DateTime, make sure you
put dates in the
On May 31, 2011, at 5:07 PM, Joel B. Mohler wrote:
On Monday, May 30, 2011 11:25:11 pm Michael Bayer wrote:
This is a malformed date value. SQLite has no date type so SQLA must
parse it. It assumes its only parsing strings that it created. If you're
artificially generating strings to be
If I have an instance, returned from calling first() or one(), etc on a
query object ... is there a straightforward way to determine which of its
attributes are dynamic queries, as opposed to loaded data?
This works:
[ getattr(instance, attr) for attr in dir(instance) if isinstance(
On Tuesday, May 31, 2011 05:42:26 pm Michael Bayer wrote:
This is a malformed date value. SQLite has no date type so SQLA must
parse it. It assumes its only parsing strings that it created. If
you're artificially generating strings to be used with DateTime, make
sure you
put dates
I have a field verification routine that is run as part of a mapper
extension. When a field error is detected, an exception is thrown with
the field in question, the object with the incorrect field. This
worked great in 0.3, but I'm now moving to 0.6, and I can no longer do
this as my invalid
On May 31, 2011, at 11:09 PM, chris e wrote:
I have a field verification routine that is run as part of a mapper
extension. When a field error is detected, an exception is thrown with
the field in question, the object with the incorrect field. This
worked great in 0.3, but I'm now moving to
Hi,
I'm working on a script using SQLAlchemy against a PostgreSQL database and
using Python's multiprocessing. The pattern is for each thread to:
- start a transaction (session.begin())
- retrieve the next row in table X that has not yet been processed
- set a being_processed flag in the row so
