Make CONCAT act on all fields of a tuple, instead of just the first two fields
of a tuple
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Key: PIG-1420
URL: https://issues.apache.org/jira/browse/PIG-1420
Project: Pig
Issue Type: Improvement
Components: impl
Affects Versions: 0.8.0
Reporter: Russell Jurney
Fix For: 0.7.0
org.apache.pig.builtin.CONCAT (which acts on DataByteArray's internally) and
org.apache.pig.builtin.StringConcat (which acts on Strings internally), both
act on the first two fields of a tuple. This results in ugly nested CONCAT
calls like:
CONCAT(CONCAT(A, ' '), B)
The more desirable form is:
CONCAT(A, ' ', B)
This change will be backwards compatible, provided that no one was relying on
the fact that CONCAT ignores fields after the first two in a tuple. This seems
a reasonable assumption to make, or at least a small break in compatibility for
a sizable improvement.
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