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From: Tom Lane <tgl@sss.pgh.pa.us>
To: Jelte Fennema-Nio <me@jeltef.nl>
cc: pgsql-bugs@lists.postgresql.org
Subject: Re: Combining array slicing and indexing causes incorrect/confusing
 results
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Jelte Fennema-Nio <me@jeltef.nl> writes:
> Due to the way SubscriptingRef works there's no way for it to describe
> a subscript sequence that both does a slice and a regular index in the
> same SubscriptingRef.

Well, yeah, because they're fundamentally different operations.
A slice produces a value of the array type, a regular index
operation produces a value of the element type.  So if you
mix the notations we assume you really meant slicing in each
subscript.

			regards, tom lane