Data query

There are several types of data queries

• Raw data query

• Aggregate query

• Downsampling query

• Single point supplementary null query

• Latest data query

• Align by device query

• Group by fill query

In order to achieve the above kinds of queries, a basic query component for a single time series is designed in the IoTDB query engine, and on this basis, various query functions are implemented.

Related documents

• Query fundamentals

• Basic query components

• Raw data query

• Aggregate query

• Downsampling query

• Recent timestamp query

• Align by device query

• Fill function

• Group by fill query