sqlobject-discuss

[SQLObject] func.NOW + INTERVAL

[Dave P. <dpo...@te...>]

I'm trying to create a record in a database with a 'expires' field,
which records are deleted whenever expires <= NOW().  I seem to have
difficulty grasping how I can generate a query similar to:

 UPDATE records SET expires = NOW() + INTERVAL 30 DAY;

I've tried something like:

 Records.expires = func.NOW('INTERVAL 30 DAY')
 Records.expires = func.NOW() + 'INTERVAL 30 DAY'
 Records.expires = func.NOW() + '+ INTERVAL 30 DAY'
 Records.expires = func.DATE_ADD(func.NOW(),'INTERVAL 30 DAY')

as well as many other combinations, but none of them seemed to work.

Any suggestion?
-Dave.

btw, how does one access the raw database connection from a SQLObject? I
know I somehow have to go thru _connection and then something else, but
everytime I've tried using _runWithConnection or something similar I
always end up with an error of some kind.

Re: [SQLObject] func.NOW + INTERVAL

[Ian B. <ia...@co...>]

On Fri, 2003-08-01 at 08:18, Dave Poirier wrote:
> I'm trying to create a record in a database with a 'expires' field,
> which records are deleted whenever expires <= NOW().  I seem to have
> difficulty grasping how I can generate a query similar to:
> 
>  UPDATE records SET expires = NOW() + INTERVAL 30 DAY;
> 
> I've tried something like:
> 
>  Records.expires = func.NOW('INTERVAL 30 DAY')
>  Records.expires = func.NOW() + 'INTERVAL 30 DAY'
>  Records.expires = func.NOW() + '+ INTERVAL 30 DAY'
>  Records.expires = func.DATE_ADD(func.NOW(),'INTERVAL 30 DAY')

func.NOW() + const('INTERVAL 30 DAY')

> as well as many other combinations, but none of them seemed to work.
> 
> Any suggestion?
> -Dave.
> 
> btw, how does one access the raw database connection from a SQLObject? I
> know I somehow have to go thru _connection and then something else, but
> everytime I've tried using _runWithConnection or something similar I
> always end up with an error of some kind.

You might use query, queryAll, or queryOne with your _connection object.

  Ian

Re: [SQLObject] func.NOW + INTERVAL

[Dave P. <dpo...@te...>]

On Fri, 2003-08-01 at 10:40, Ian Bicking wrote:
> On Fri, 2003-08-01 at 08:18, Dave Poirier wrote:
> > I'm trying to create a record in a database with a 'expires' field,
> > which records are deleted whenever expires <= NOW().  I seem to have
> > difficulty grasping how I can generate a query similar to:
> > 
> >  UPDATE records SET expires = NOW() + INTERVAL 30 DAY;
> > 
> > I've tried something like:
> > 
> >  Records.expires = func.NOW('INTERVAL 30 DAY')
> >  Records.expires = func.NOW() + 'INTERVAL 30 DAY'
> >  Records.expires = func.NOW() + '+ INTERVAL 30 DAY'
> >  Records.expires = func.DATE_ADD(func.NOW(),'INTERVAL 30 DAY')
> 
> func.NOW() + const('INTERVAL 30 DAY')

The query being sent to MySQL is:

  UPDATE session SET expires = (NOW() + __call__('INTERVAL 30 MINUTE'))
WHERE id = 2

MySQL complains with: 

  ProgrammingError: (1064, "You have an error in your SQL syntax near
'('INTERVAL 30 MINUTE')) WHERE id = 2' at line 1")


-Dave

Re: [SQLObject] func.NOW + INTERVAL

[Ian B. <ia...@co...>]

Oops, that should have been 
SQLObject.SQLBuilder.SQLConstant("INTERVAL 30 DAY")
-- you could also register something like mx.DeltaDateTime as a type,
and convert it that way.

Good luck, I'm off...
  Ian


On Fri, 2003-08-01 at 13:56, Dave Poirier wrote:
> On Fri, 2003-08-01 at 10:40, Ian Bicking wrote:
> > On Fri, 2003-08-01 at 08:18, Dave Poirier wrote:
> > > I'm trying to create a record in a database with a 'expires' field,
> > > which records are deleted whenever expires <= NOW().  I seem to have
> > > difficulty grasping how I can generate a query similar to:
> > > 
> > >  UPDATE records SET expires = NOW() + INTERVAL 30 DAY;
> > > 
> > > I've tried something like:
> > > 
> > >  Records.expires = func.NOW('INTERVAL 30 DAY')
> > >  Records.expires = func.NOW() + 'INTERVAL 30 DAY'
> > >  Records.expires = func.NOW() + '+ INTERVAL 30 DAY'
> > >  Records.expires = func.DATE_ADD(func.NOW(),'INTERVAL 30 DAY')
> > 
> > func.NOW() + const('INTERVAL 30 DAY')
> 
> The query being sent to MySQL is:
> 
>   UPDATE session SET expires = (NOW() + __call__('INTERVAL 30 MINUTE'))
> WHERE id = 2
> 
> MySQL complains with: 
> 
>   ProgrammingError: (1064, "You have an error in your SQL syntax near
> '('INTERVAL 30 MINUTE')) WHERE id = 2' at line 1")
> 
> 
> -Dave
> 
> 
> 
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Re: [SQLObject] func.NOW + INTERVAL

[Dave P. <dpo...@te...>]

Thanks, that did it!

import SQLObject.SQLBuilder

Records.expires = func.NOW() + SQLBuilder.SQLConstant("INTERVAL 30 DAY")

:)

On Fri, 2003-08-01 at 14:35, Ian Bicking wrote:
> Oops, that should have been 
> SQLObject.SQLBuilder.SQLConstant("INTERVAL 30 DAY")
> -- you could also register something like mx.DeltaDateTime as a type,
> and convert it that way.
> 
> Good luck, I'm off...
>   Ian
> 
> 
> On Fri, 2003-08-01 at 13:56, Dave Poirier wrote:
> > On Fri, 2003-08-01 at 10:40, Ian Bicking wrote:
> > > On Fri, 2003-08-01 at 08:18, Dave Poirier wrote:
> > > > I'm trying to create a record in a database with a 'expires' field,
> > > > which records are deleted whenever expires <= NOW().  I seem to have
> > > > difficulty grasping how I can generate a query similar to:
> > > > 
> > > >  UPDATE records SET expires = NOW() + INTERVAL 30 DAY;
> > > > 
> > > > I've tried something like:
> > > > 
> > > >  Records.expires = func.NOW('INTERVAL 30 DAY')
> > > >  Records.expires = func.NOW() + 'INTERVAL 30 DAY'
> > > >  Records.expires = func.NOW() + '+ INTERVAL 30 DAY'
> > > >  Records.expires = func.DATE_ADD(func.NOW(),'INTERVAL 30 DAY')
> > > 
> > > func.NOW() + const('INTERVAL 30 DAY')
> > 
> > The query being sent to MySQL is:
> > 
> >   UPDATE session SET expires = (NOW() + __call__('INTERVAL 30 MINUTE'))
> > WHERE id = 2
> > 
> > MySQL complains with: 
> > 
> >   ProgrammingError: (1064, "You have an error in your SQL syntax near
> > '('INTERVAL 30 MINUTE')) WHERE id = 2' at line 1")
> > 
> > 
> > -Dave