Burhan wrote:
Platform: Windows XP
Oracle : 10.2.0.4.0
SQLAlchemy: 0.7
Python: 2.7
Driver: cx_Oracle (compiled with unicode support as per the Windows
binary)
What version is in use here? Is the unicode support as per the Windows
binary you refer to cx_oracle's UNICODE mode (im guessing so since that
version seems to include builds with the mode turned on)? this setting
has been discontinued with cx_oracle and is removed in version 5.1, and is
never required for Python 2.xx. SQLAlchemy supports this mode marginally
but the error you are getting would appear that this mode is in use (and
an edge that SQLA has missed).You should upgrade to cx_oracle 5.1, or
use the 5.0 build without the needless/extremely inconvenient UNICODE
flag, ensuring the special UNICODE mode is not in use - so that
cursor.execute() accepts strings as well as Python unicode objects
equally.
Next problem is a simple case doesn't work, the exact line is:
foo =
Table('MERCHANT',oracle_meta,autoload=True,autoload_with=oracle_engine)
Error is:
NoSuchTableError: MERCHANT
SQLAlchemy will interpret 'MERCHANT' as:
'MERCHANT'
i.e., with quotes, case sensitive. Case insensitive names with SQLAlchemy
are indicated using all lowercase names, i.e. 'merchant' - else quoting is
used.The Oracle SQL statement you illustrate is using case insensitive
names. Still, its not clear how it wouldn't locate the table at all as
'MERCHANT' should equate to 'MERCHANT' (haven't tried lately though),
turn on SQL echoing with echo='debug' (after changing 'MERCHANT' to
'merchant' in code) to ensure it's talking to the right database and such.
However, the exact same connect string with raw cx_Oracle works great:
cur.execute(uSELECT MERCHANT_NUMBER FROM MERCHANT)
r = cur.fetchall()
len(r)
2922
Please point me in the right direction.
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