Comp150CPA Message 0012.txt from Alva L. Couch(couch)

An amusing puzzle for you: the way I started assignment 4 was with the lines:
input1 = LOAD 'file.dat' USING PigStorage() AS (f1:chararray, f2:chararray); 
input2 = FOREACH input1 GENERATE f2 AS f1, f1 AS f2; 
input3 = UNION input1, input2; 
input4 = FILTER input3 by f1<f2;
Using input1-4 saves some computation time later, if one is clever. 

Last changed Wed Mar 16 17:59:34 2011