website: add missing enrichment-cloudsql.md

Author: mohamedawnallah

website/www/site/content/en/documentation/transforms/python/elementwise/enrichment-cloudsql.md

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+---
+title: "Enrichment with CloudSQL"
+---
+<!--
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+-->
+
+# Use CloudSQL to enrich data
+
+{{< localstorage language language-py >}}
+
+<table>
+  <tr>
+    <td>
+      <a>
+      {{< button-pydoc path="apache_beam.transforms.enrichment_handlers.cloudsql" class="CloudSQLEnrichmentHandler" >}}
+      </a>
+   </td>
+  </tr>
+</table>
+
+In Apache Beam <version> and later versions, the enrichment transform includes
+a built-in enrichment handler for
+[CloudSQL](https://cloud.google.com/sql/docs).
+The following example demonstrates how to create a pipeline that use the enrichment transform with the [`CloudSQLEnrichmentHandler`](https://beam.apache.org/releases/pydoc/current/apache_beam.transforms.enrichment_handlers.cloudsql.html#apache_beam.transforms.enrichment_handlers.cloudsql.CloudSQLEnrichmentHandler) handler.
+
+The data in the CloudSQL PostgreSQL products table instance follows this format:
+
+{{< table >}}
+| product_id | name | quantity | region_id |
+|:----------:|:----:|:--------:|:---------:|
+|     1      |  A   |    2     |     3     |
+|     2      |  B   |    3     |     1     |
+|     3      |  C   |   10     |     4     |
+{{< /table >}}
+
+
+{{< highlight language="py" >}}
+{{< code_sample "sdks/python/apache_beam/examples/snippets/transforms/elementwise/enrichment.py" enrichment_with_cloudsql >}}
+{{</ highlight >}}
+
+{{< paragraph class="notebook-skip" >}}
+Output:
+{{< /paragraph >}}
+{{< highlight class="notebook-skip" >}}
+{{< code_sample "sdks/python/apache_beam/examples/snippets/transforms/elementwise/enrichment_test.py" enrichment_with_cloudsql >}}
+{{< /highlight >}}
+
+## Related transforms
+
+Not applicable.
+
+{{< button-pydoc path="apache_beam.transforms.enrichment_handlers.cloudsql" class="CloudSQLEnrichmentHandler" >}}