So far I've only considered the '::' cast syntax suggested in the
original proposal, e.g.:

ARRAY[]::text[]

I wonder whether we are also interested in catching CAST(), e.g.:

CAST(ARRAY[] AS text[])

I'm personally okay with leaving it at support for '::', but
admittedly I am heavily biased towards this syntax (I find CAST very
ugly). I suppose supporting CAST as well would be the more
predictable behaviour; I think people might be surprised if we
supported one form of casting but not the other.

Comments?

Regards,
BJ

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