[python-win32] adodbapi: paramstyle 'named' doesn't work as expected

Sibylle Koczian nulla.epistola at web.de
Sat Feb 23 09:24:07 EST 2019


Am 21.02.2019 um 16:26 schrieb Dennis Lee Bieber:
> 
> 	If I were coding something, I'd likely use the native style to reduce
> the cost of conversion overhead. Relatively speaking, that name extraction
> code is /slow/ -- it splits the query on :, then loops over each character
> looking for something (non-alphanumeric and not _) on which to terminate
> the resulting name... and that loop is done at Python source code level (it
> doesn't even use a
> 
> 		for i,c in enumerate(chunk):
> 
> which would exit the loop on the end of the chunk; instead it manually
> increments the counter to be "next character" [which fails when there is no
> next character].
> 
> 

Well - I started to write my application without much thought about 
execution speed, because the database tables concerned are small to very 
small. If I can use a dictionary for query parameters then the function 
producing the parameters doesn't need to know much about the SQL query 
using them. That's why I like pyformat and named. Looking at the apibase 
code I think pyformat might be a little bit faster?

But when I saw things didn't work as expected that had to be cleared up 
in any case.

Greetings
Sibylle


More information about the python-win32 mailing list