I'm trying to query a DAS table with the Data Explorer but no matter what I put in for the query it returns nothing. If I leave it blank it returns all the rows. I'm using the default H2 database in my example.
All fields that you want to query need to be indexed (via the Event Persistence Configuration configuration of the stream). See https://docs.wso2.com/display/DAS301/Configuring+Indexes for the details.