问题
Sample.txt File
2017-01-01 10:21:59 THURSDAY -39 3 Pick up a bus - Travel for two hours
2017-02-01 12:45:19 FRIDAY -55 8 Pick up a train - Travel for one hour
2017-03-01 11:35:49 SUNDAY -55 8 Pick up a train - Travel for one hour
I
.
.
When I executed the suggested command, it got split into three fields.
when I do the below operation, it is not working as expected.
A = LOAD 'Sample.txt' USING PigStorage() as (line:chararray);
B = foreach A generate STRSPLIT(line, ' ', 3);
c = foreach B generate $2;
split C into buslog if $0 matches '.*bus*.', trainlog if $0 matches '.*train*.';
Note:- Dump of C will give below result.
THURSDAY -39 3 Pick up a bus - Travel for two hours
FRIDAY -55 8 Pick up a train - Travel for one hour
SUNDAY -55 8 Pick up a train - Travel for one hour
Requirement: In the above result, i want to split train and bus into two relations, but it is not happening as expected
回答1:
The syntax is .*string.*.Notice that it is .* on both sides of the string.
split C into buslog if $0 matches '.*bus.*', trainlog if $0 matches '.*train.*';
来源：https://stackoverflow.com/questions/47071395/not-able-to-split-chararray-field-containing-spaces-and-tabs-between-the-words