1. Hadoop Pig 0.10.0内置系统函数
http://pig.apache.org/docs/r0.10.0/func.html
- AVG
- CONCAT
- COUNT
- COUNT_STAR
- DIFF
- IsEmpty
- MAX
- MIN
- SIZE
- SUM
- TOKENIZE
- Handling Compression
- BinStorage
- JsonLoader, JsonStorage
- PigDump
- PigStorage
- TextLoader
- ABS
- ACOS
- ASIN
- ATAN
- CBRT
- CEIL
- COS
- COSH
- EXP
- FLOOR
- LOG
- LOG10
- RANDOM
- ROUND
- SIN
- SINH
- SQRT
- TAN
- TANH
- INDEXOF
- LAST_INDEX_OF
- LCFIRST
- LOWER
- REGEX_EXTRACT
- REGEX_EXTRACT_ALL
- REPLACE
- STRSPLIT
- SUBSTRING
- TRIM
- UCFIRST
- UPPER
2. Hadoop Pig Latin 操作符
http://pig.apache.org/docs/r0.10.0/basic.html
- Identifiers
- Relations, Bags, Tuples, Fields
- Data Types
- Nulls and Pig Latin
- Constants
- Expressions
- Schemas
- Arithmetic Operators
- Boolean Operators
- Cast Operators
- Comparison Operators
- Type Construction Operators
- Dereference Operators
- Disambiguate Operator
- Flatten Operator
- Null Operators
- Sign Operators
- Types Table: negative ( - ) operator