Hive
Hive Function: Built-in & UDF (User Defined Functions)
Functions are built for a specific purpose to perform operations like Mathematical, arithmetic,...
Views are similar to tables, which are generated based on the requirements.
Creation of View:
Syntax:
Create VIEW <VIEWNAME> AS SELECT
Example:
Hive>Create VIEW Sample_ViewAS SELECT * FROM employees WHERE salary>25000
In this example, we are creating view Sample_View where it will display all the row values with salary field greater than 25000.
Indexes are pointers to particular column name of a table.
Syntax:
Create INDEX <INDEX_NAME> ON TABLE < TABLE_NAME(column names)>
Example:
Create INDEX sample_Index ON TABLE guruhive_internaltable(id)
Here we are creating index on table guruhive_internaltable for column name id.
Functions are built for a specific purpose to perform operations like Mathematical, arithmetic,...
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Tables, Partitions, and Buckets are the parts of Hive data modeling. What is Partitions? Hive...