On 04/10/2010 13:16, Mark Erbaugh wrote:
If I were doing this in SQL, I would to the first command as
SELECT count(*)
FROM period
WHERE period.cycle = ?
Why would you do this first?
Chris
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Hi All
Just my 2c;
The original question was why is SA doing the select before it does the
delete? and then the comment was added that he would have done a simple
count instead.. It appears that he was not aware that the DELETE could
return the count as well (indirectly) so in actual fact,
On Oct 5, 2010, at 4:48 AM, Chris Withers wrote:
On 04/10/2010 13:16, Mark Erbaugh wrote:
If I were doing this in SQL, I would to the first command as
SELECT count(*)
FROM period
WHERE period.cycle = ?
Why would you do this first?
I wasn't sure why SA was issuing a select realperiod
I have a table described with:
BASE = declarative_base(name=APP_ID)
class Period(BASE):
__tablename__ = 'period'
realperiod = Column(Integer, primary_key=True)
cycle = Column(Integer)
[more columns]
I want to delete all records with a given value for the cycle column.
On Oct 4, 2010, at 8:16 AM, Mark Erbaugh wrote:
I have a table described with:
BASE = declarative_base(name=APP_ID)
class Period(BASE):
__tablename__ = 'period'
realperiod = Column(Integer, primary_key=True)
cycle = Column(Integer)
[more columns]
I want
On Oct 4, 2010, at 5:46 PM, Michael Bayer wrote:
On Oct 4, 2010, at 8:16 AM, Mark Erbaugh wrote:
I have a table described with:
BASE = declarative_base(name=APP_ID)
class Period(BASE):
__tablename__ = 'period'
realperiod = Column(Integer, primary_key=True)
On Oct 4, 2010, at 8:06 PM, Mark Erbaugh wrote:
Thanks. What is the purpose of
SELECT period.realperiod AS period_realperiod
FROM period
WHERE period.cycle = ?
that appears to be generated by the session.query ... call?
the delete() and update() methods on Query want to invalidate
On Oct 4, 2010, at 8:30 PM, Michael Bayer wrote:
On Oct 4, 2010, at 8:06 PM, Mark Erbaugh wrote:
Thanks. What is the purpose of
SELECT period.realperiod AS period_realperiod
FROM period
WHERE period.cycle = ?
that appears to be generated by the session.query ... call?
the
