Обсуждение: Use of multiple || and precidence

I have made a change so that all operators except "+-*/%" are now
left-associative, rather than being non-associative:
select 'a' || 'b' || 'c';

The old code does:
test=> select 'a' || 'b' || 'c';ERROR:  parser: parse error at or near "||"

Is this a problem for people?  It will now not complain about missing
parens, but left-associate all these operations.  Any problems with
that?

The code still associates "+-*/%" so that "*/%" is done first, then
"+-".

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