flink-sql执行
1、93上source /home/liug/venv/bin/activate 进入python虚拟环境,然后到/home/liug/flink-1.14.0/bin 目录
2、 ./sql-client.sh
3、SET execution.result-mode=table;
4、SELECT name,
COUNT(*) AS cnt
FROM (VALUES ('Bob'), ('Alice'), ('Greg'), ('Bob'))
AS NameTable(name)
GROUP BY name;