9.KafkaSQL
Use the SQL statement to the news data visualization in topic, for SQL queries, and table names field need to use double quotes to mark, example SQL is as follows:
select * from "ke_test_topic" where "partition" in (0,1,2) limit 100
As shown in the following figure:
Note: Access to topic message data, depending on the underlying interface record of the earliest and latest offset, the default display up to 5000 records.
Kafka topic datasets like this:
[{"id":123,"name":"smartloli"},{"id":456,"name":"smartloli2"},{"id":789,"name":"smartloli3"}]
Then you can use sql query topic like this:
select JSONS("msg",'name') from "topic_name" where "partition" in (0) limit 10
When Kafka topic datasets like this:
{"id":123,"name":"smartloli"}
Then you can use sql query topic like this:
select JSON("msg",'name') from "topic_name" where "partition" in (0) limit 10
Last updated Sat Jul 13 2019 15:07:22 GMT+0000 (UTC)