[英]How to read a table which is saved by saveAsTable in Apache Spark?
I am trying to save a dataframe by using df.write.saveAsTable("table_name")
我正在尝试使用
df.write.saveAsTable("table_name")
保存 dataframe
but i am unable to retrieve this table again (not in the same run).但我无法再次检索此表(不在同一次运行中)。
I tried我试过了
spark.read.table("table_name")
and和
spark.sql("select * from table_name")
but both didn't worked give error但两者都没有工作给出错误
Table or view not found: table_name
Here is an example:这是一个例子:
df.write.saveAsTable('table_name')
df = spark.table('table_name')
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