Kafka JDBC Source Connector是否无法通过sql查询从mysql读取数据？

Question

I have created a local database for testing purpose on MySQL. When I'm trying to read the data from the database, it's reading fine. When I use the SQL query in connector configuration, it's just running but not reading any data from the database. Any idea what might cause this?

Here is my connector config:

name=just-like
acks=0 
connector.class=io.confluent.connect.jdbc.JdbcSourceConnector
key.converter=io.confluent.connect.avro.AvroConverter
key.converter.schema.registry.url=http://localhost:8081
value.converter=io.confluent.connect.avro.AvroConverter
value.converter.schema.registry.url=http://localhost:8081
connection.url=jdbc:mysql://localhost:3306/DBtest?user=**&password=**
connection.user=**  
connection.password=**  
table.whitelist=test
mode=timestamp  
timestamp.column.name=createddate  
query= select column_name from table_name  
validate.non.null=False 
topic.prefix=sql-

Database Schema

Answer 1

We shouldn't use the tag table.whitelist with the custom query. If you want to use the query tag, I suggest removing the table.whitelist tag. You can't use them both together.