1)sql对应的 update-mode ,还有的其他类型
地址:https://ci.apache.org/projects/flink/flink-docs-release-1.10/dev/table/connect.html#update-modes
2) Flink sql的水印API地址
https://ci.apache.org/projects/flink/flink-docs-release-1.10/dev/table/sql/create.html#create-table
3)未完待续