dbms

Proposed changes

Doris's Routine Load realizes the import of data from Kafka to Doris, and make a feature of real-time synchronization of data from Pulsar to Doris based on Pulsar IO.

1. The custom abstract class DorisAbstractSink implements the interface org.apache.pulsar.io.core.Sink.

2. The DorisGenericRecordSink class inherits the abstract class DorisAbstractSink, and the speci

Use case:
Add the ability to search for an element in an array and retrieve back the array index.
As per the PostgreSQL documentation:

array_position ( anycompatiblearray, anycompatible [, integer ] ) → integer

Returns the subscript of the first occurrence of the second argument in the array, or NULL if it's not present

See questdb/questdb#595.