Sort related bag

问题

I have a Pig script which generated a relation

A: {x: chararray,B: {(y: chararray,z: int)}}

I want to sort A based on B.y, however the following piece gives me error:

Syntax error, unexpected symbol at or near z

output = foreach A{
    sorted = order B by z DSC;
    generate x,sorted;
}

回答1:

Use DESC instead of DSC.

e.g.

output = foreach A{
    sorted = order B by z DESC;
    generate x,sorted;
}

来源：https://stackoverflow.com/questions/15144194/sort-related-bag