diff --git a/ext/opentelemetry-ext-asyncpg/CHANGELOG.md b/ext/opentelemetry-ext-asyncpg/CHANGELOG.md
index e81079bfb8..052b66ea4e 100644
--- a/ext/opentelemetry-ext-asyncpg/CHANGELOG.md
+++ b/ext/opentelemetry-ext-asyncpg/CHANGELOG.md
@@ -2,6 +2,9 @@
 
 ## Unreleased
 
+- Shouldn't capture query parameters by default
+  ([#854](https://github.com/open-telemetry/opentelemetry-python/pull/854))
+
 ## Version 0.10b0
 
 Released 2020-06-23
diff --git a/ext/opentelemetry-ext-asyncpg/src/opentelemetry/ext/asyncpg/__init__.py b/ext/opentelemetry-ext-asyncpg/src/opentelemetry/ext/asyncpg/__init__.py
index c373d7194d..4a3a51ac08 100644
--- a/ext/opentelemetry-ext-asyncpg/src/opentelemetry/ext/asyncpg/__init__.py
+++ b/ext/opentelemetry-ext-asyncpg/src/opentelemetry/ext/asyncpg/__init__.py
@@ -74,36 +74,11 @@ def _hydrate_span_from_args(connection, query, parameters) -> dict:
     return span_attributes
 
 
-async def _do_execute(func, instance, args, kwargs):
-    span_attributes = _hydrate_span_from_args(instance, args[0], args[1:])
-    tracer = getattr(asyncpg, _APPLIED)
-
-    exception = None
-
-    with tracer.start_as_current_span(
-        "postgresql", kind=SpanKind.CLIENT
-    ) as span:
-
-        for attribute, value in span_attributes.items():
-            span.set_attribute(attribute, value)
-
-        try:
-            result = await func(*args, **kwargs)
-        except Exception as exc:  # pylint: disable=W0703
-            exception = exc
-            raise
-        finally:
-            if exception is not None:
-                span.set_status(
-                    Status(_exception_to_canonical_code(exception))
-                )
-            else:
-                span.set_status(Status(StatusCanonicalCode.OK))
-
-    return result
-
-
 class AsyncPGInstrumentor(BaseInstrumentor):
+    def __init__(self, capture_parameters=False):
+        super().__init__()
+        self.capture_parameters = capture_parameters
+
     def _instrument(self, **kwargs):
         tracer_provider = kwargs.get(
             "tracer_provider", trace.get_tracer_provider()
@@ -113,6 +88,7 @@ def _instrument(self, **kwargs):
             _APPLIED,
             tracer_provider.get_tracer("asyncpg", __version__),
         )
+
         for method in [
             "Connection.execute",
             "Connection.executemany",
@@ -121,7 +97,7 @@ def _instrument(self, **kwargs):
             "Connection.fetchrow",
         ]:
             wrapt.wrap_function_wrapper(
-                "asyncpg.connection", method, _do_execute
+                "asyncpg.connection", method, self._do_execute
             )
 
     def _uninstrument(self, **__):
@@ -134,3 +110,33 @@ def _uninstrument(self, **__):
             "fetchrow",
         ]:
             unwrap(asyncpg.Connection, method)
+
+    async def _do_execute(self, func, instance, args, kwargs):
+        span_attributes = _hydrate_span_from_args(
+            instance, args[0], args[1:] if self.capture_parameters else None,
+        )
+        tracer = getattr(asyncpg, _APPLIED)
+
+        exception = None
+
+        with tracer.start_as_current_span(
+            "postgresql", kind=SpanKind.CLIENT
+        ) as span:
+
+            for attribute, value in span_attributes.items():
+                span.set_attribute(attribute, value)
+
+            try:
+                result = await func(*args, **kwargs)
+            except Exception as exc:  # pylint: disable=W0703
+                exception = exc
+                raise
+            finally:
+                if exception is not None:
+                    span.set_status(
+                        Status(_exception_to_canonical_code(exception))
+                    )
+                else:
+                    span.set_status(Status(StatusCanonicalCode.OK))
+
+        return result
diff --git a/ext/opentelemetry-ext-docker-tests/tests/asyncpg/test_asyncpg_functional.py b/ext/opentelemetry-ext-docker-tests/tests/asyncpg/test_asyncpg_functional.py
index c5f5557438..d3060592a6 100644
--- a/ext/opentelemetry-ext-docker-tests/tests/asyncpg/test_asyncpg_functional.py
+++ b/ext/opentelemetry-ext-docker-tests/tests/asyncpg/test_asyncpg_functional.py
@@ -19,7 +19,7 @@ def _await(coro):
     return loop.run_until_complete(coro)
 
 
-class TestFunctionalPsycopg(TestBase):
+class TestFunctionalAsyncPG(TestBase):
     @classmethod
     def setUpClass(cls):
         super().setUpClass()
@@ -58,24 +58,6 @@ def test_instrumented_execute_method_without_arguments(self, *_, **__):
             },
         )
 
-    def test_instrumented_execute_method_with_arguments(self, *_, **__):
-        _await(self._connection.execute("SELECT $1;", "1"))
-        spans = self.memory_exporter.get_finished_spans()
-        self.assertEqual(len(spans), 1)
-        self.assertEqual(
-            StatusCanonicalCode.OK, spans[0].status.canonical_code
-        )
-        self.assertEqual(
-            spans[0].attributes,
-            {
-                "db.type": "sql",
-                "db.user": POSTGRES_USER,
-                "db.statement.parameters": "('1',)",
-                "db.instance": POSTGRES_DB_NAME,
-                "db.statement": "SELECT $1;",
-            },
-        )
-
     def test_instrumented_fetch_method_without_arguments(self, *_, **__):
         _await(self._connection.fetch("SELECT 42;"))
         spans = self.memory_exporter.get_finished_spans()
@@ -90,52 +72,6 @@ def test_instrumented_fetch_method_without_arguments(self, *_, **__):
             },
         )
 
-    def test_instrumented_fetch_method_with_arguments(self, *_, **__):
-        _await(self._connection.fetch("SELECT $1;", "1"))
-        spans = self.memory_exporter.get_finished_spans()
-        self.assertEqual(len(spans), 1)
-        self.assertEqual(
-            spans[0].attributes,
-            {
-                "db.type": "sql",
-                "db.user": POSTGRES_USER,
-                "db.statement.parameters": "('1',)",
-                "db.instance": POSTGRES_DB_NAME,
-                "db.statement": "SELECT $1;",
-            },
-        )
-
-    def test_instrumented_executemany_method_with_arguments(self, *_, **__):
-        _await(self._connection.executemany("SELECT $1;", [["1"], ["2"]]))
-        spans = self.memory_exporter.get_finished_spans()
-        self.assertEqual(len(spans), 1)
-        self.assertEqual(
-            {
-                "db.type": "sql",
-                "db.statement": "SELECT $1;",
-                "db.statement.parameters": "([['1'], ['2']],)",
-                "db.user": POSTGRES_USER,
-                "db.instance": POSTGRES_DB_NAME,
-            },
-            spans[0].attributes,
-        )
-
-    def test_instrumented_execute_interface_error_method(self, *_, **__):
-        with self.assertRaises(asyncpg.InterfaceError):
-            _await(self._connection.execute("SELECT 42;", 1, 2, 3))
-        spans = self.memory_exporter.get_finished_spans()
-        self.assertEqual(len(spans), 1)
-        self.assertEqual(
-            spans[0].attributes,
-            {
-                "db.type": "sql",
-                "db.instance": POSTGRES_DB_NAME,
-                "db.user": POSTGRES_USER,
-                "db.statement.parameters": "(1, 2, 3)",
-                "db.statement": "SELECT 42;",
-            },
-        )
-
     def test_instrumented_transaction_method(self, *_, **__):
         async def _transaction_execute():
             async with self._connection.transaction():
@@ -229,3 +165,113 @@ async def _transaction_execute():
         self.assertEqual(
             StatusCanonicalCode.OK, spans[2].status.canonical_code
         )
+
+    def test_instrumented_method_doesnt_capture_parameters(self, *_, **__):
+        _await(self._connection.execute("SELECT $1;", "1"))
+        spans = self.memory_exporter.get_finished_spans()
+        self.assertEqual(len(spans), 1)
+        self.assertEqual(
+            StatusCanonicalCode.OK, spans[0].status.canonical_code
+        )
+        self.assertEqual(
+            spans[0].attributes,
+            {
+                "db.type": "sql",
+                "db.user": POSTGRES_USER,
+                # This shouldn't be set because we don't capture parameters by
+                # default
+                #
+                # "db.statement.parameters": "('1',)",
+                "db.instance": POSTGRES_DB_NAME,
+                "db.statement": "SELECT $1;",
+            },
+        )
+
+
+class TestFunctionalAsyncPG_CaptureParameters(TestBase):
+    @classmethod
+    def setUpClass(cls):
+        super().setUpClass()
+        cls._connection = None
+        cls._cursor = None
+        cls._tracer = cls.tracer_provider.get_tracer(__name__)
+        AsyncPGInstrumentor(capture_parameters=True).instrument(
+            tracer_provider=cls.tracer_provider
+        )
+        cls._connection = _await(
+            asyncpg.connect(
+                database=POSTGRES_DB_NAME,
+                user=POSTGRES_USER,
+                password=POSTGRES_PASSWORD,
+                host=POSTGRES_HOST,
+                port=POSTGRES_PORT,
+            )
+        )
+
+    @classmethod
+    def tearDownClass(cls):
+        AsyncPGInstrumentor().uninstrument()
+
+    def test_instrumented_execute_method_with_arguments(self, *_, **__):
+        _await(self._connection.execute("SELECT $1;", "1"))
+        spans = self.memory_exporter.get_finished_spans()
+        self.assertEqual(len(spans), 1)
+        self.assertEqual(
+            StatusCanonicalCode.OK, spans[0].status.canonical_code
+        )
+        self.assertEqual(
+            spans[0].attributes,
+            {
+                "db.type": "sql",
+                "db.user": POSTGRES_USER,
+                "db.statement.parameters": "('1',)",
+                "db.instance": POSTGRES_DB_NAME,
+                "db.statement": "SELECT $1;",
+            },
+        )
+
+    def test_instrumented_fetch_method_with_arguments(self, *_, **__):
+        _await(self._connection.fetch("SELECT $1;", "1"))
+        spans = self.memory_exporter.get_finished_spans()
+        self.assertEqual(len(spans), 1)
+        self.assertEqual(
+            spans[0].attributes,
+            {
+                "db.type": "sql",
+                "db.user": POSTGRES_USER,
+                "db.statement.parameters": "('1',)",
+                "db.instance": POSTGRES_DB_NAME,
+                "db.statement": "SELECT $1;",
+            },
+        )
+
+    def test_instrumented_executemany_method_with_arguments(self, *_, **__):
+        _await(self._connection.executemany("SELECT $1;", [["1"], ["2"]]))
+        spans = self.memory_exporter.get_finished_spans()
+        self.assertEqual(len(spans), 1)
+        self.assertEqual(
+            {
+                "db.type": "sql",
+                "db.statement": "SELECT $1;",
+                "db.statement.parameters": "([['1'], ['2']],)",
+                "db.user": POSTGRES_USER,
+                "db.instance": POSTGRES_DB_NAME,
+            },
+            spans[0].attributes,
+        )
+
+    def test_instrumented_execute_interface_error_method(self, *_, **__):
+        with self.assertRaises(asyncpg.InterfaceError):
+            _await(self._connection.execute("SELECT 42;", 1, 2, 3))
+        spans = self.memory_exporter.get_finished_spans()
+        self.assertEqual(len(spans), 1)
+        self.assertEqual(
+            spans[0].attributes,
+            {
+                "db.type": "sql",
+                "db.instance": POSTGRES_DB_NAME,
+                "db.user": POSTGRES_USER,
+                "db.statement.parameters": "(1, 2, 3)",
+                "db.statement": "SELECT 42;",
+            },
+        )