Apache Pig 0.14 官方文档

Built In Functions

ABS

AccumuloStorage

ACOS

AddDuration

ASIN

ATAN

AVG

AvroStorage

BagToString

BinStorage

Built In Functions

CBRT

CEIL

CONCAT

COS

COSH

COUNT

COUNT_STAR

CurrentTime

DaysBetween

DIFF

ENDSWITH

EqualsIgnoreCase

EXP

FLOOR

GetDay

GetHour

GetMilliSecond

GetMinute

GetMonth

GetSecond

GetWeek

GetWeekYear

GetYear

Handling Compression

HBaseStorage

HoursBetween

INDEXOF

IsEmpty

JsonLoader, JsonStorage

LAST_INDEX_OF

LCFIRST

LOG

LOG10

LOWER

LTRIM

MAX

MilliSecondsBetween

MIN

MinutesBetween

MonthsBetween

OrcStorage

PigDump

PigStorage

PluckTuple

RANDOM

REGEX_EXTRACT

REGEX_EXTRACT_ALL

REPLACE

ROUND

ROUND_TO

RTRIM

SecondsBetween

SIN

SINH

SIZE

SPRINTF

SQRT

STARTSWITH

STRSPLIT

STRSPLITTOBAG

SUBSTRING

SUBTRACT

SubtractDuration

SUM

TAN

TANH

TextLoader

TOBAG

ToDate

TOKENIZE

TOMAP

ToMilliSeconds

TOP

ToString

TOTUPLE

ToUnixTime

TrevniStorage

TRIM

UCFIRST

UniqueID

UPPER

WeeksBetween

YearsBetween

Performance and Efficiency

AddForEach

ColumnMapKeyPrune

Combiner

ConstantCalculator

GroupByConstParallelSetter

Hash-based Aggregation in Map Task

LimitOptimizer

Memory Management

Merge Joins

Merge-Sparse Joins

MergeFilter

MergeForEach

Multi-Query Execution

Optimization Rules

PartitionFilterOptimizer

Performance and Efficiency

Performance Considerations

Performance Enhancers

PredicatePushdownOptimizer

PushDownForEachFlatten

PushUpFilter

Reducer Estimation

Replicated Joins

Skewed Joins

Specialized Joins

SplitFilter

Tez mode

Timing your UDFs

Administration

Administration

Disabling Pig commands and operators

Output location strict check

Pig Latin Basics

Arithmetic Operators

ASSERT

Boolean Operators

Cast Operators

COGROUP

Comparison Operators

Constants

CROSS

CUBE

Data Types

DEFINE

DEFINE (UDFs, streaming)

Dereference Operators

Disambiguate Operator

DISTINCT

Expressions

FILTER

Flatten Operator

FOREACH

GROUP

Identifiers

IMPORT

JOIN (inner)

JOIN (outer)

LIMIT

LOAD

MAPREDUCE

Null Operators

Nulls and Pig Latin

ORDER BY

Pig Latin Basics

RANK

REGISTER

Relations, Bags, Tuples, Fields

SAMPLE

Schemas

Sign Operators

SPLIT

STORE

STREAM

Type Construction Operators

UNION

Shell and Utility Commands

clear

exec

fs

help

history

kill

quit

run

set

sh

Shell and Utility Commands

Control Structures

Control Structures

DEFINE (macros)

Embedded Pig - Java

Embedded Pig - Python, JavaScript and Groovy

IMPORT (macros)

Parameter Substitution

Pig Macros

Testing and Diagnostics

DESCRIBE

Diagnostic Operators

DUMP

EXPLAIN

ILLUSTRATE

Pig Progress Notification Listener

Pig Scripts and MapReduce Job IDs (MapReduce mode only)

Pig Statistics

PigUnit

Testing and Diagnostics

Getting Started

Getting Started

Pig Latin Statements

Pig Properties

Pig Setup

Pig Tutorial

Running Pig

User Defined Functions

Piggy Bank

User Defined Functions

Writing Groovy UDFs

Writing Java UDFs

Writing JavaScript UDFs

Writing Jython UDFs

Writing Python UDFs

Writing Ruby UDFs

Index

index