Normalized "an SQL" spelling.

django/db/backends/base/operations.py

@@ -264,7 +264,7 @@ class BaseDatabaseOperations(object):
 
     def prepare_sql_script(self, sql):
         """
-        Takes a SQL script that may contain multiple lines and returns a list
+        Takes an SQL script that may contain multiple lines and returns a list
         of statements to feed to successive cursor.execute() calls.
 
         Since few databases are able to process raw SQL scripts in a single
@@ -376,7 +376,7 @@ class BaseDatabaseOperations(object):
         to tables with foreign keys pointing the tables being truncated.
         PostgreSQL requires a cascade even if these tables are empty.
         """
-        raise NotImplementedError('subclasses of BaseDatabaseOperations must provide a sql_flush() method')
+        raise NotImplementedError('subclasses of BaseDatabaseOperations must provide an sql_flush() method')
 
     def sequence_reset_by_name_sql(self, style, sequences):
         """

django/db/models/expressions.py

@@ -472,7 +472,7 @@ class F(Combinable):
 
 class Func(Expression):
     """
-    A SQL function call.
+    An SQL function call.
     """
     function = None
     template = '%(function)s(%(expressions)s)'

django/db/models/fields/related_descriptors.py

@@ -239,7 +239,7 @@ class ForwardManyToOneDescriptor(object):
             for lh_field, rh_field in self.field.related_fields:
                 setattr(instance, lh_field.attname, getattr(value, rh_field.attname))
 
-        # Set the related instance cache used by __get__ to avoid a SQL query
+        # Set the related instance cache used by __get__ to avoid an SQL query
         # when accessing the attribute we just set.
         setattr(instance, self.cache_name, value)
 
@@ -406,7 +406,7 @@ class ReverseOneToOneDescriptor(object):
             for index, field in enumerate(self.related.field.local_related_fields):
                 setattr(value, field.attname, related_pk[index])
 
-            # Set the related instance cache used by __get__ to avoid a SQL query
+            # Set the related instance cache used by __get__ to avoid an SQL query
             # when accessing the attribute we just set.
             setattr(instance, self.cache_name, value)
 

docs/howto/custom-lookups.txt

@@ -67,7 +67,7 @@ We then need to define the ``as_sql`` method. This takes a ``SQLCompiler``
 object, called ``compiler``,  and the active database connection.
 ``SQLCompiler`` objects are not documented, but the only thing we need to know
 about them is that they have a ``compile()`` method which returns a tuple
-containing a SQL string, and the parameters to be interpolated into that
+containing an SQL string, and the parameters to be interpolated into that
 string. In most cases, you don't need to use it directly and can pass it on to
 ``process_lhs()`` and ``process_rhs()``.
 
@@ -88,7 +88,7 @@ example, ``process_lhs`` returns ``('"author"."name"', [])`` and
 parameters for the left hand side, but this would depend on the object we have,
 so we still need to include them in the parameters we return.
 
-Finally we combine the parts into a SQL expression with ``<>``, and supply all
+Finally we combine the parts into an SQL expression with ``<>``, and supply all
 the parameters for the query. We then return a tuple containing the generated
 SQL string and the parameters.
 

docs/ref/models/expressions.txt

@@ -88,7 +88,7 @@ makes it possible to refer to model field values and perform  database
 operations using them without actually having to pull them out of the  database
 into Python memory.
 
-Instead, Django uses the ``F()`` object to generate a SQL expression that
+Instead, Django uses the ``F()`` object to generate an SQL expression that
 describes the required operation at the database level.
 
 This is easiest to understand through an example. Normally, one might do

docs/releases/1.8.txt

@@ -651,7 +651,7 @@ Tests
 
 * Added test client support for file uploads with file-like objects.
 
-* A shared cache is now used when testing with a SQLite in-memory database when
+* A shared cache is now used when testing with an SQLite in-memory database when
   using Python 3.4+ and SQLite 3.7.13+. This allows sharing the database
   between threads.
 

docs/topics/testing/overview.txt

@@ -177,7 +177,7 @@ control the particular collation used by the test database. See the
 :doc:`settings documentation </ref/settings>` for details of these
 and other advanced settings.
 
-If using a SQLite in-memory database with Python 3.4+ and SQLite 3.7.13+,
+If using an SQLite in-memory database with Python 3.4+ and SQLite 3.7.13+,
 `shared cache <https://www.sqlite.org/sharedcache.html>`_ will be enabled, so
 you can write tests with ability to share the database between threads.
 

tests/schema/tests.py

@@ -1572,7 +1572,7 @@ class SchemaTests(TransactionTestCase):
                 editor.create_model(Thing)
             except OperationalError as e:
                 self.fail("Errors when applying initial migration for a model "
-                          "with a table named after a SQL reserved word: %s" % e)
+                          "with a table named after an SQL reserved word: %s" % e)
         # Check that it's there
         list(Thing.objects.all())
         # Clean up that table