How to Query Database information from DB Connect?

Splunk Enterprise

I am wanting to query DB information from DB Connect.
But the problem is that each time the query gets information of the entire query table. This takes up a lot of storage space
Is there a way to get only new logs without duplicates?
Every day the amount of new information is different, can't limit the number of rows you want to get?

Thanks

Get Updates on the Splunk Community!

[Puzzles] Solve, Learn, Reuse: Word-play

This puzzle series (first published here) is based on analysing words.Some of the statements in your puzzle ...

Tuning Edge Processor in Hybrid Mode: What Limits Each Data Path

When you run Edge Processor in hybrid mode, alongside a Splunk heavy forwarder on the same host, two questions ...

Best Practices: Splunk auto adjust pipeline queue

When you enable autoAdjustQueue in Splunk, maxSize should be understood as the queue size Splunk starts with ...