Newbie: Database technique

Rich Holm rholm at mcs.com
Sun Jan 5 19:00:58 CET 2003


Have a look at 

http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/163605

This class (resultset) really helps to clean up SQL code.

Cheers,
Rich



In article <mailman.1040436689.26831.python-list at python.org>, 
joe at overdrivepc.com says...
> Currently rewriting an aplication using Python and MySql.  The Previous
> incarnation was written in Oracle/Oracle Forms.  Since I'm a newbie to
> Python, I'm writing some kludgy code, and have yet to stumble across a
> cleaner way.
> 
> There is a bunch of tables to convert and am changing some field names in
> the process.  So this kludgy code is appearing in my editor. :o
> 
> fields=("User_Role", "PRN_User", "Name", "Home_Phone", "Office_phone",
> "Mobile_phone", "Pager", "Fax_No", "Active_user","User_ID")
> oc.execute("SELECT " + ( ", ".join(fields)) + " FROM my_users")
> 
> i = 1
> while 1:
>     rec = oc.fetchone()
>     if rec == None: break  #my_users
> 
>     fields = ("Organization_ID", "UserID", "Name", "Home_Phone",
>     "Office_Phone", "Mobile_Phone", "Pager", "Fax_No", "Active_User",
>     "User_Role")
> 
>     mc.execute("INSERT INTO my_users (" + ",".join(fields) + ") values
>     (" + ("""%s,""" * (len(fields)-1)) + """%s)""", [1,] + rec[1:9] +
>     list( role_id) ) print "%5d %-20s %-20s transferred" % (i, rec[1],
>     rec[3]) id=mc.insert_id()
> 
> Suggestions to make this insert operation more readable?  Moslty I've used
> the tuple 'fields' to count the number of columns selected for insert
> statements...
> 
> I'll be writing my frist classes soon :)
> 
> Haven't used a generic db class for dynamic access, considering SQLDict.  I
> would appreciate recommendations.
> 
> TIA,
> -Joe
> 
> 
> 




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