ARITY - computes the number of fields in a tuple (also known as the
"arity" of a tuple)
From: Haijun Cao [mailto:[EMAIL PROTECTED]]
Sent: Tuesday, June 03, 2008 4:50 PM
To: [EMAIL PROTECTED]
Subject: a builtin function to return number of fields?
I am grouping by $1, but got IndexOutofBoundException because some rows
are mal-formed, they only have 1 field.
Is there a built-in function to return the number of fields for each
row? So I can ignore those rows myself.
Or, even better, automatically ignore the mal-formed rows for me?