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From "Miyakawa Taku (JIRA)" <j...@apache.org>
Subject [jira] [Created] (PIG-2901) Errors and lacks in document "Pig Latin Basics"
Date Sat, 01 Sep 2012 13:22:07 GMT
Miyakawa Taku created PIG-2901:
----------------------------------

             Summary: Errors and lacks in document "Pig Latin Basics"
                 Key: PIG-2901
                 URL: https://issues.apache.org/jira/browse/PIG-2901
             Project: Pig
          Issue Type: Bug
          Components: documentation
    Affects Versions: 0.10.0
            Reporter: Miyakawa Taku


This is a patch to fix errors and lacks in document "Pig Latin Basics".

# States that COGROUP groups records with a null key _from different relations_ separately.
# "A map key must be a -scalar- +chararray+ "
# Removes a statement which says that a star expression is a tuple expression (it seems incorrect)
# Fixes a subject confusion of a sentence "When two bytearrays are used in arithmetic expressions..."
# Updates a link to Java API documentation.
# Fixes a tuple example: "LOAD 'data' as..." -> "A = LOAD 'data' as..."
# "the asterisk (\*) is used to project all -tuples- +fields+ "
# A result of COGROUP with two relations contains _three_ fields, not _two_
# Removes an example of COGROUP INNER, which is deprecated
# Removes a sentence which says "JOIN operator always performs an inner join". Actually, JOIN
also perform an outer join.
# JOIN "Performs an outer join of two -ore more- relations"
# Replaces an example of "-Dpig.additional.jars" with a jar file on HDFS. The current version
incorrectly shows an example of a Pig script on HDFS.
# Fixes typos, lack of hyperlinks, inappropriate indentation, and incorrect chaptering.

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