Pig error : mismatched input 'Map' expecting EOF

    Pig 下面出现错误，很大一部分是基本的语法错误，赶快检查大小写吧！

　再次复习 Pig 命令的语法规则：

　（１）系统关键字　不区分大小写

　　系统关键字挺多的，目前为止的全部关键字：

-- A

assert, and, any, all, arrange, as, asc, AVG

-- B

bag, BinStorage, by, bytearray, BIGINTEGER, BIGDECIMAL

-- C

cache, CASE, cat, cd, chararray, cogroup, CONCAT, copyFromLocal, copyToLocal, COUNT, cp, cross

-- D

datetime, %declare, %default, define, dense, desc, describe, DIFF, distinct, double, du, dump

-- E

e, E, eval, exec, explain

-- F

f, F, filter, flatten, float, foreach, full

-- G

generate, group

-- H

help

-- I

if, illustrate, import, inner, input, int, into, is

-- J

join

-- K

kill

-- L

l, L, left, limit, load, long, ls

-- M

map, matches, MAX, MIN, mkdir, mv

-- N

not, null

-- O

onschema, or, order, outer, output

-- P

parallel, pig, PigDump, PigStorage, pwd

-- Q

quit

-- R

register, returns, right, rm, rmf, rollup, run

-- S

sample, set, ship, SIZE, split, stderr, stdin, stdout, store, stream, SUM

-- T

TextLoader, TOKENIZE, through, tuple

-- U

union, using

-- V, W, X, Y, Z

void

　（２）其余的，比如变量名，列名，关系名等等，都　区分大小写