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Example for intersection operator is wrong
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* Example for intersection operator is wrong
@ 2016-07-14 16:28 etulsky@gmail.com
  2016-07-14 17:36 ` Re: Example for intersection operator is wrong Tom Lane <tgl@sss.pgh.pa.us>
  0 siblings, 1 reply; 2+ messages in thread

From: etulsky@gmail.com @ 2016-07-14 16:28 UTC (permalink / raw)
  To: pgsql-docs

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&#39;t included in the second range; the actual output of
this operator is [11,15).

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* Re: Example for intersection operator is wrong
  2016-07-14 16:28 Example for intersection operator is wrong etulsky@gmail.com
@ 2016-07-14 17:36 ` Tom Lane <tgl@sss.pgh.pa.us>
  0 siblings, 0 replies; 2+ messages in thread

From: Tom Lane @ 2016-07-14 17:36 UTC (permalink / raw)
  To: etulsky@gmail.com; +Cc: pgsql-docs

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&#39;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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