摘要：一、临时表创建技巧： drop view mytab2; create or replace view mytab2 as select 1 as c1 union all select 2 as c1 union all select 3 as c1 ; --1、子查询 select * , c1 阅读全文

摘要：spark-shell 1.spark-shell之本地模式 bin/spark-shell 或者 bin/spark-shell \ --master local[2] 2.spark-shell之standalone模式 /export/servers/spark/bin/spark-shell 阅读全文