Loading files into tables
Loading data into a Hive table is one of the variants of inserting data into a Hive table. In this method, the entire file is copied/moved to a directory that corresponds to Hive tables. If the table is partitioned, then data is loaded into partitions one at a time. The general syntax of loading the data into a table is as follows:
LOAD DATA [LOCAL] INPATH 'filepath' [OVERWRITE] INTO TABLE tablename [PARTITION (partcol1=val1, partcol2=val2 ...)]
Where:
[LOCAL]: This is an optional clause. If this clause is specified, the preceding command will look for the file in the local filesystem. The command will follow the file path in the local filesystem.FILEPATH: This is the path where files reside either in the local filesystem or HDFS.[OVERWRITE]: Is an optional clause. If this clause is specified, the data in the table or partition is deleted and new data is loaded based on the file path in the statement.tablename: This is the name of the table.[PARTITION ...
