On 2007-10-15 17:16, goldtech wrote:
> Using Python and OBDC in MS-Access DBs. So, I'm able to run SQL
> statements from Python on an Access DB.
>
> Is there an SQL statement that will give me column information? For a
> table I want to know the data type and of course colum/Attribute name
> for each column.
>
> So far the answer has been "no". VB or some other tool is needed to do
> that I'm told.
>
> Using just Python and OBDC is there a way? Maybe Win32com?
Here's a quick example:
# Table that you're interested in:
tablename ='MyTable'
# Load mxODBC
import mx.ODBC.Windows
# Open the connection
database = mx.ODBC.Windows.DriverConnect(
'DSN=<password>;'
'UID=<username>;'
'PWD=<username>')
# Create a cursor to execute statements on
cursor = database.cursor()
# Issue a dummy statement that won't return anything,
# but will setup the cursor.description attribute
cursor.execute('select * from %s where 1=0' % tablename)
# Print a list of column names:
print 'Found these columns:'
for columndef in cursor.description:
print ' ', columndef[0]
For more information on the format of cursor.description,
see the DB-API 2.0 spec:
http://www.python.org/dev/peps/pep-0249/
of the mxODBC manual:
http://www.egenix.com/products/python/mxODBC/#Documentation
If you need even more meta-information about the columns
or the schema in general, have a look at the catalog methods
which are available in mxODBC, e.g. cursor.columns().
--
Marc-Andre Lemburg
eGenix.com
Professional Python Services directly from the Source (#1, Oct 15 2007)
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