Example for intersection operator is wrong

Started by Nonamealmost 10 years ago2 messagesdocs
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#1Noname
etulsky@gmail.com

The following documentation comment has been logged on the website:

Page: https://www.postgresql.org/docs/9.2/static/functions-range.html
Description:

On the page https://www.postgresql.org/docs/9.2/static/functions-range.html
it gives an example for the intersection of range (5,15) and range (10,20)
as [10,15). But 10 isn't included in the second range; the actual output of
this operator is [11,15).

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#2Tom Lane
tgl@sss.pgh.pa.us
In reply to: Noname (#1)
Re: Example for intersection operator is wrong

etulsky@gmail.com writes:

The following documentation comment has been logged on the website:
Page: https://www.postgresql.org/docs/9.2/static/functions-range.html
Description:

On the page https://www.postgresql.org/docs/9.2/static/functions-range.html
it gives an example for the intersection of range (5,15) and range (10,20)
as [10,15). But 10 isn't included in the second range; the actual output of
this operator is [11,15).

Uh, no, it isn't:

regression=# select int8range(5,15) * int8range(10,20);
?column?
----------
[10,15)
(1 row)

You'd be correct if int8range(10,20) produced '(10,20)', but it produces
'[10,20)'.

regards, tom lane

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