HI Michael ,
Thanks for your reply,this is my table creation query without any
quoted variables
CREATE TABLE AUTOLOAD_TEST
(
ID INTEGER
, FIRST_NAME VARCHAR(20)
);
this is my connect_sqlalchemy.py script
++++++++++++++++++++++++++++++++++++++++++
from sqlalchemy import MetaData,create_engine,Table
engine = create_engine("oracle+cx_oracle://anoop:asdfgh@xe" )
meta = MetaData(engine)
tbl_autoload_test=Table('autoload_test', meta, autoload=True,
autoload_with=engine, schema=None)
print tbl_autoload_test.columns.keys()
++++++++++++++++++++++++++++++++++++++++++
When I run this script
(myenv)anoop@AGLAP:~/Example/sqlalchemy$ python connect_sqlalchemy.py
[u'id', u'first_name'] #Here I got column names in lower case
Current normalize_method in (loc :/sqlalchemy/dialects/oracle/
base.py)
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
def normalize_name(self, name):
if name is None:
return None
# Py2K
if isinstance(name, str):
name = name.decode(self.encoding)
# end Py2K
if name.upper() == name and \
not
self.identifier_preparer._requires_quotes(name.lower()):
return name.lower()
else:
return name
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
I modified the above method slightly my version of normalize_name
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
def normalize_name(self, name):
if name is None:
return None
# Py2K
if isinstance(name, str):
name = name.decode(self.encoding)
# end Py2K
if name.upper() == name and \
not self.identifier_preparer._requires_quotes(name): #
this is my change not converted into lower when calling
return name.lower()
else:
return name
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
(myenv)anoop@AGLAP:~/Example/sqlalchemy$ python connect_sqlalchemy.py
#OUTPUT
===============================================================
[u'ID', u'FIRST_NAME'] # Here output is in Capital letters not
converted into lower case
================================================================
Did you got my point ? In first the fourth checking (lc_value !=
value) in case _requires_quotes method (loc:sqlalchemy/sql/
compiler.py) is False because ('first_name'!='first_name' is the
checking) so here _requires_quotes will return False
But in second case (lc_value!=value) checking became True because now
the checking is 'first_name'!='FIRST_NAME' this is True and
_requires_quotes will return True and we will get upper case column
names in upper case. I wondering why "name" converted into lower when
calling _requires_quotes because in _requires_quotes again it is
converting into lower in statement " lc_value=value.lower() " ,I think
two times lower conversion is not needed here,am I correct?.
thanks:
Anoop
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