Merge pull request #31 from jordiyeh/jordiyeh-patch-30

Allows UPDATE statement to work and installs optional vertica python dependencies

Author: lemeryfertitta

README.rst

@@ -21,4 +21,18 @@ From git: ::
 
      git clone https://github.com/LocusEnergy/vertica-sqlalchemy 
      cd vertica-sqlalchemy
-     python setup.py install
+     python setup.py install
+     
+
+Usage
+------------
+
+**ID/Primary Key Declaration**
+
+Do not use this. The INSERT will fail as it will try to insert the ID
+
+    id = Column(Integer, primary_key=True)
+
+Do the following instead
+
+    id = Column(Integer, Sequence('user_id_seq'), primary_key=True)

setup.py

@@ -19,7 +19,7 @@
     vertica.vertica_python = sqla_vertica_python.vertica_python:VerticaDialect
     """,
     install_requires=[
-        'vertica_python'
+        'vertica_python[namedparams]'
     ],
 )
 

sqla_vertica_python/vertica_python.py

@@ -21,6 +21,9 @@ class VerticaDialect(PGDialect):
     name = 'vertica'
     driver = 'vertica_python'
 
+    # UPDATE functionality works with the following option set to False
+    supports_sane_rowcount = False
+    
     supports_unicode_statements = True
     supports_unicode_binds = True
     supports_native_decimal = True