[Cloud computing ~ Pig: 1. Basic syntax

Loading and storage
Load loads data from external files or other storage, and stores the data in the relationship
Store a link to a file system or other storage.
Dump prints the link to the console
Filter
The filter deletes unnecessary rows from the link.
Distinct deletes duplicate rows from the link
Foreach... Generate generates or deletes fields for each element of the set.
Stream uses external programs to transform the relationship
Sample random sampling from Link
Group and Connection
Join joins two or more links
Cogroup groups in two or more relationships
Group groups data in a link
Cross gets the product of two or more relations (Cross multiplication)
Sort
Order sorts a link based on one or more fields.
Limit limits the number of tuples in a link
Merge and split
Union merges two or more relations.
Split Splits a link into two or more relationships.

[Cloud computing ~ Pig: 1. Basic syntax