Changing to support values with commas

Signed-off-by: Jason Myers <[email protected]>

Author: jasonamyers

redshift_sqlalchemy/dialect.py

@@ -79,7 +79,7 @@ def __init__(self, select, bucket, access_key, secret_key):
 def visit_unload_from_select(element, compiler, **kw):
     ''' Returns the actual sql query for the UnloadFromSelect class
     '''
-    return "unload ('%(query)s') to '%(bucket)s' credentials 'aws_access_key_id=%(access_key)s;aws_secret_access_key=%(secret_key)s'" % {
+    return "unload ('%(query)s') to '%(bucket)s' credentials 'aws_access_key_id=%(access_key)s;aws_secret_access_key=%(secret_key)s' delimiter ',' addquotes" % {
         'query': compiler.process(element.select),
         'bucket': element.bucket,
         'access_key': element.access_key,

tests/test_unload_from_select.py

@@ -14,6 +14,6 @@ def setUp(self):
     def test_basic_unload_case(self):
         ''' Tests that the simplest type of UnloadFromSelect works
         '''
-        expected_result = "unload ('SELECT count(t1.id) AS count_1 \nFROM t1') to 'cookies' credentials 'aws_access_key_id=cookies;aws_secret_access_key=cookies'"
+        expected_result = "unload ('SELECT count(t1.id) AS count_1 \nFROM t1') to 'cookies' credentials 'aws_access_key_id=cookies;aws_secret_access_key=cookies' delimiter ',' addquotes"
         insert = UnloadFromSelect(select([func.count(self.t1.c.id)]), 'cookies', 'cookies', 'cookies')
         self.assertEqual(expected_result, str(insert))