Hi, Huang. I test the SQL with the connector 'datagen', and watermark exists in the we ui. You can change "WATERMARK FOR createtime AS createtime - INTERVAL '5' SECOND" to "WATERMARK FOR createtime AS createtime" and ensure all sutasks contain data for testing. At 2022-05-07 16:41:36, "JianWen Huang" <jianwen.huang....@gmail.com> wrote: >Flink version : 1.15.0 >Flink sql : >create table custom_kafka( >name STRING, >money BIGINT, >status STRING, >createtime TIMESTAMP(3), >operation_ts TIMESTAMP_LTZ(3), >WATERMARK FOR createtime AS createtime - INTERVAL '5' SECOND >)WITH( >'connector' = 'kafka', >'topic' = 'flink.cdc_test', >'scan.startup.mode' = 'earliest-offset', >'properties.bootstrap.servers' = '*.70:9092,*.71:9092,*.72:9092', >'format' = 'debezium-json' >) > >create view custom_day_sum AS >SELECT DATE_FORMAT(TUMBLE_START(createtime,INTERVAL '10' >MINUTES),'yyyy-MM-dd')as >date_str,SUBSTR(DATE_FORMAT(TUMBLE_END(createtime,INTERVAL '10' >MINUTES),'HH:mm'),1,4) || '0' as time_str,sum(money) as total ,name >FROM custom_kafka >where status='1' >GROUP BY name,TUMBLE(createtime,INTERVAL '10' MINUTES) > >CREATE TABLE print_table ( >date_str STRING, >time_str STRING, >total BIGINT, >name STRING" >)WITH( >'connector'='print' >) > >INSERT INTO print_table >SELECT date_str,time_str,total,name >FROM custom_day_sum > >Error: >There are not watermark shows in web ui .