FLINK SQL????????????????????

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????kafka????????json??????????
{"id":5,"price":40,"timestamp":1584942626828,"type":"math"}
{"id":2,"price":70,"timestamp":1584942629638,"type":"math"}
{"id":2,"price":70,"timestamp":1584942634951,"type":"math"}

....
????timestamp??????13????????????????SQL??????????????????????????????
  - name: bookpojo
    type: source-table
    connector: 
      property-version: 1
      type: kafka
      version: "universal"
      topic: pojosource
      startup-mode: earliest-offset
      properties:
        zookeeper.connect: localhost:2181
        bootstrap.servers: localhost:9092
        group.id: testGroup
    format: 
      property-version: 1
      type: json
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;schema:&nbsp;"ROW<id&nbsp;INT,&nbsp;type&nbsp;STRING,&nbsp;price&nbsp;INT,&nbsp;timestamp&nbsp;TIMESTAMP&gt;"
&nbsp;&nbsp;&nbsp;&nbsp;schema:&nbsp;
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;-&nbsp;name:&nbsp;id
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;data-type:&nbsp;INT
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;-&nbsp;name:&nbsp;type
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;data-type:&nbsp;STRING
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;-&nbsp;name:&nbsp;price
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;data-type:&nbsp;INT
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;-&nbsp;name:&nbsp;timestamp
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;data-type:&nbsp;TIMESTAMP(3)




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????????????????????????????????"null"????????????????????????????Java 
SQL??????????????????????????????????????????&nbsp;2018-01-01??????20:43:59??????2018-01-01
 20:43:59.999????????
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