?????? Flink????????????

[hjw]

????streaming api ??????????????????????????sql api 
????????????????????????????????????streaming api????????




------------------ ???????? ------------------
??????:                                                                         
                                               "user-zh"                        
                                                            
<liujiangangp...@gmail.com&gt;;
????????:&nbsp;2022??3??9??(??????) ????2:47
??????:&nbsp;"user-zh"<user-zh@flink.apache.org&gt;;

????:&nbsp;Re: Flink????????????



????????????????????????????????????????????????????????????????state??
https://nightlies.apache.org/flink/flink-docs-master/docs/dev/datastream/fault-tolerance/state/

hjw <1010445...@qq.com.invalid&gt; ??2022??3??9?????? 01:32??????

&gt; ????????sql??SELECT color, sum(id) FROM T GROUP BY
&gt; 
colorFlink????????????????T????????????????????????????????????????????????????????????????????????????????????????????????????group
&gt; by 
key??color)??????????????????????????Flink???????????????????????????????????????????????????