Hadoop DP Notes
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How to rename a table in Hive?
Using ALTER command with RENAME, we can rename a table in Hive.
Shell
ALTER TABLE hive_table_name RENAME TO new_name;
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What are the main components of Mapreduce Job ?
Main driver class which provides job configuration parameters. Mapper class which must extend org.apache.hadoop.mapredu...
TO_CHAR
This will be used to extract various date formats. The available date formats as follows. Syntax: to_char ( date , fo...