Hadoop DP Notes
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CREATE TABLE SYNTAX
Create table <
table_name
> (
col1 datatype1, col2 datatype2 …coln datatypen
);
Ex:
SQL>
create table student12 (no number (2), name varchar (10), marks number (3));
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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...