-how to use '==' to compare chararry(string)
Dan Yi 2013-02-27, 01:11
I have this simple file and tried to remove lines that have itemid column as empty string '', but it
Won't work, I tried to set the == to some valid itemid in the file see if I can filter out those lines,
Still it wont' work, any one knows how to use the '=='?
A = LOAD '$DATA' AS (timestamp:chararray,itemid:chararray,actiontype:chararray,actionid:chararray,anonid:chararray,deviceid:chararray,userid:chararray,mediouserid:chararray);
B = DISTINCT A PARALLEL 2;
-- none of the following filter would work.
C = FILTER B BY itemid == '';
D = FILTER B BY itemid == '591837';
E = FILTER B BY actiontype == 'AddToCart';
STORE A INTO 'OUTPUT1/A' USING PigStorage();
STORE B INTO 'OUTPUT1/B' USING PigStorage();
STORE C INTO 'OUTPUT1/C' USING PigStorage();
STORE D INTO 'OUTPUT1/D' USING PigStorage();
STORE E INTO 'OUTPUT1/E' USING PigStorage();
Data file is attached in the email.