I've recently noticed two oversights in the docs that I'd like to fix.
First, in sql-fetch, there's no hint that the cursor name can be the
quoted value of a refcursor, eg:
FETCH ALL FROM "<unnamed portal 1>";
This *is* shown in an example in plpgsql-cursors, but only in some
sample code. If you set out with the question "how do I fetch the
contents of a refcursor returned from a function" it's a lot harder to
find the results than it could be.
I'd like to add a short discussion of refcursors and an example to
sql-fetch, and refer to that from plpgsql-cursors to make it clearer how
you work with plpgsql cursors from SQL.
Second, in functions-datetime, I wasn't able to find any mention of the
behaviour of CASTing a DATE to a TIMESTAMP or to a TIMESTAMPTZ. I'd like
to explicitly state that casting date to timestamp or timestamptz
produces a date in local time, and show that if you want to cast a date
to another time zone you can use:
thedate::timestamp AT TIME ZONE 'UTC'
to produce a timestamptz containing that date at midnight UTC.
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