Flink创建TableEnvironment_flink tableenvironment-优快云博客

本文链接：https://blog.youkuaiyun.com/BugEveryday/article/details/136637771

在官网上，Flink创建TableEnvironment有两种方式：1.通过静态方法 TableEnvironment.create() 创建；2.从现有的 StreamExecutionEnvironment 创建一个 StreamTableEnvironment 与 DataStream API 互操作

import org.apache.flink.table.api.EnvironmentSettings;
import org.apache.flink.table.api.TableEnvironment;


//1.通过静态方法 TableEnvironment.create() 创建
EnvironmentSettings settings = EnvironmentSettings
    .newInstance()
    .inStreamingMode()//默认为StreamingMode。可以不写
    //.inBatchMode()
    //.useOldPlanner()//1.14.4已过时
    //.useBlinkPlanner()//1.14.4已过时。默认BLINK
    .build();

TableEnvironment tEnv = TableEnvironment.create(settings);

//2.从现有的 StreamExecutionEnvironment 创建一个 StreamTableEnvironment 与 DataStream API 互操作
import org.apache.flink.streaming.api.environment.StreamExecutionEnvironment;
import org.apache.flink.table.api.EnvironmentSettings;
import org.apache.flink.table.api.bridge.java.StreamTableEnvironment;

StreamExecutionEnvironment env = StreamExecutionEnvironme