I'm learning GroupBy Window Aggregation from document https://ci.apache.org/projects/flink/flink-docs-stable/dev/table/tableApi.html
My code is: https://paste.ubuntu.com/p/GQqR4cqdp6/ pojo is: https://paste.ubuntu.com/p/CF4yttTGQ4/ I got A group window expects a time attribute for grouping in a stream environment. Could anyone how to fix this? I don't know the right time of this,thanks
