mxODBC puzzle

M.-A. Lemburg mal at lemburg.com
Tue Apr 29 22:44:43 CEST 2003


Bill Witherspoon wrote:
> I've been fooling around with mxODBC/mxDateTime for a couple of days 
> now, trying to effect an Update query. Can anyone spot the error I'm 
> making with the code below:
> 
> 
> sql = "Update tblOEOrders set tblOEOrders.ScheduleDate = #" + 
> newdate.strftime("%m/%d/%Y") + "# where tblOEOrders.OrderID = " + 
> str(orderid) + ";"
> 
> myconn = mx.ODBC.Windows.Connect('production')
> mycursor = myconn.cursor()
> numlines_affected = mycursor.execute(qrystring)

This should read:

mycursor.execute(...)
numlines = mycursor.rowcount

> The DB is Access97 via DSN (which is *not* read only), and query seems 
> to return OK (1 record affected), but the record never gets updated. 
> Using the same code I can do Selects without difficulty.
> Do I have to do a fetchall() equivalent to make the update query run, or 
> is something else wrong?

mxODBC defaults to transactional operation. To see the updates
in the database you have to commit your work, i.e. call

myconn.commit()

HTH,
-- 
Marc-Andre Lemburg
eGenix.com

Professional Python Software directly from the Source  (#1, Apr 29 2003)
 >>> Python/Zope Products & Consulting ...         http://www.egenix.com/
 >>> mxODBC, mxDateTime, mxTextTools ...        http://python.egenix.com/
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