How to Read Messages from Topic in ksqlDB

To read new messages that are being produced on a topic, you can use the PRINT command:

PRINT topicName;

Don’t forget to quote the topic if the name has non-alphanumeric characters, such as dots or dashes .

PRINT 'topic-name';

If you are only interested in reading a sample of messages on a topic, you can do so by limiting the output. Alternatively, you can choose to read the topic from the beginning.