Hello, I have query as, I am interested in exploring the possibility of utilizing aggregated queries, specifically SELECT queries that retrieve data from a database or table, and integrating them into a connector. This integration would facilitate the smooth flow of data from a source to a destination. I am seeking clarification on whether this is a feasible option.

Yes, it is feasible to utilize SELECT queries to retrieve data from a database or table and integrate them into a connector. However, it's important to note that this functionality is not universally available across all connectors. Some connectors, like Google Ads, allow you to create custom queries which you can add a

where

clause. This is possible because the connector has a

/search

or allows this possibility and the custom query will create a new stream and doesn’t change the default ones. However, in general, Airbyte is an ELT (Extract, Load, Transform) tool, meaning it extracts data from the source, loads it into the destination, and then performs transformations. The transformations are performed after loading into the destination. You can create connections and run syncs using the web UI, octavia-cli or by calling the public API. Once the sync is complete, it's possible to run transformations and even integrate them into Airbyte. If you want to filter data before it is loaded into the destination, you would need to build a custom connector for your API and use it internally. You can learn more about connector development [here](https://docs.airbyte.com/connector-development/). Please note that if you want to change the filter, you would need to retrieve all data again. Therefore, it is often best practice to first transfer and store all data and start applying your logic to the result. If you have a specific use case or connector in mind, I would recommend reaching out to the Airbyte community on [Slack](https://airbytehq.slack.com/archives/C021JANJ6TY) for more specific guidance.