Hive: Data types and File formats

Primative types:

TINYINT    SMALLINT  INT  BIGINT  BOOLEAN  FLOAT  DOUBLE STRING  TIMESTAMP  BINARY

Collection Data Types:

Example:

CREATE TABLE employees (
name                      STRING,
salary                      FLOAT,
subordinates           ARRAY<STRING>,
deductions              MAP<STRING, FLOAT>,
address                  STRUCT<street:STRING, city:STRING, state:STRING, zip:INT>);

File formats:

 you can overwrite the formats in declare a table:

 Hive is Schema on Read while traditional database Schema on Write.

 

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Reference

<<programming in Pig>>

https://cwiki.apache.org/confluence/display/Hive/LanguageManual+Types