Tim.Golden at viacom-outdoor.co.uk
Fri Nov 24 17:18:47 CET 2006
| Hi all. I am new to python and i am trying to execute queries
| from postgres db. I have a question.
| What is exactly the operation of cursor.description?
Ultimately, the doc you want to look at is this:
Here's the relevant bit:
This read-only attribute is a sequence of 7-item
sequences. Each of these sequences contains information
describing one result column: (name, type_code,
display_size, internal_size, precision, scale,
null_ok). The first two items (name and type_code) are
mandatory, the other five are optional and must be set to
None if meaningfull values are not provided.
This attribute will be None for operations that
do not return rows or if the cursor has not had an
operation invoked via the executeXXX() method yet.
The type_code can be interpreted by comparing it to the
Type Objects specified in the section below.
In practise, this means that, once a cursor's executed, you
can read the names/types of columns returned from the description
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