Added limitations and issues table to connector markdown file

bi-connectors/PowerBIConnector/docs/AmazonOpenSearchService.md

@@ -64,3 +64,16 @@
 2. Check if auth credentials are correct.
 3. Check if server is running.
 
+## Limitations and issues
+
+There are known limitations and issues that are tracked by OpenSearch including the items listed below.
+
+| Issue | Description |
+| ---- | ----------- |
+| Visualizations without numerical columns | Visualizations will only work if there is a numerical column included due to a known limitation in OpenSearch regarding subqueries. An exception to this would be visualizations with columns only of type string works as well. Can be tracked with this [bug](https://github.com/opensearch-project/sql/issues/347) |
+| Visualizations with First or Last options selected do not work | <img src="img/pbi_issue_first_last.png" width="200"> |
+| Visualizations with Minimum, Maximum, Standard deviation, Variance, or Median options selected do not work | <img src="img/pbi_issue_aggregation.png" width="200"> |
+| Basic filtering limitations | Selecting more than one value does not work when using basic filtering. Due to the issue in the first row of this table, selecting one value for basic filtering when there is no numerical column does not work. |
+| Top N filtering limitations | OpenSearch has limitations on subquery which prevents Top N filtering from working. More information can be found [here](https://opensearch.org/docs/latest/search-plugins/sql/limitation/). |
+| Advanced filtering limitations | `does not contain` and `does not start with` filters for string columns do not work. All advanced filtering for numerical columns do not work except for `is` and `is blank`. All advanced filtering for date and time columns do not work except for `is blank` and `is not blank`.|
+| Relative Date filtering limitations | Due to a known timestamp issue in OpenSearch, all relative date filtering fail to work. |

bi-connectors/PowerBIConnector/docs/OpenSearchProject.md

@@ -64,3 +64,16 @@
 2. Check if auth credentials are correct.
 3. Check if server is running.
 
+## Limitations and issues
+
+There are known limitations and issues that are tracked by OpenSearch including the items listed below.
+
+| Issue | Description |
+| ---- | ----------- |
+| Visualizations without numerical columns | Visualizations will only work if there is a numerical column included due to a known limitation in OpenSearch regarding subqueries. An exception to this would be visualizations with columns only of type string works as well. Can be tracked with this [bug](https://github.com/opensearch-project/sql/issues/347) |
+| Visualizations with First or Last options selected do not work | <img src="img/pbi_issue_first_last.png" width="200"> |
+| Visualizations with Minimum, Maximum, Standard deviation, Variance, or Median options selected do not work | <img src="img/pbi_issue_aggregation.png" width="200"> |
+| Basic filtering limitations | Selecting more than one value does not work when using basic filtering. Due to the issue in the first row of this table, selecting one value for basic filtering when there is no numerical column does not work. |
+| Top N filtering limitations | OpenSearch has limitations on subquery which prevents Top N filtering from working. More information can be found [here](https://opensearch.org/docs/latest/search-plugins/sql/limitation/). |
+| Advanced filtering limitations | `does not contain` and `does not start with` filters for string columns do not work. All advanced filtering for numerical columns do not work except for `is` and `is blank`. All advanced filtering for date and time columns do not work except for `is blank` and `is not blank`.|
+| Relative Date filtering limitations | Due to a known timestamp issue in OpenSearch, all relative date filtering fail to work. |