Thread: Documentation tweak for row-valued expressions and null
Hi I wonder if it might be worth adding a tiny note to the manual to point out that the special logic for "<row-valued-expression> IS [ NOT ] NULL" doesn't apply anywhere else that we handle nulls or talk about [non]-null values in the manual. See attached. -- Thomas Munro http://www.enterprisedb.com
Attachment
On 7/26/15 8:40 PM, Thomas Munro wrote: > I wonder if it might be worth adding a tiny note to the manual to > point out that the special logic for "<row-valued-expression> IS [ NOT > ] NULL" doesn't apply anywhere else that we handle nulls or talk about > [non]-null values in the manual. See attached. Yes. This is a common point of confusion. -- Jim Nasby, Data Architect, Blue Treble Consulting, Austin TX Experts in Analytics, Data Architecture and PostgreSQL Data in Trouble? Get it in Treble! http://BlueTreble.com
On Tue, Nov 10, 2015 at 11:10 AM, Jim Nasby <Jim.Nasby@bluetreble.com> wrote: > On 7/26/15 8:40 PM, Thomas Munro wrote: >> >> I wonder if it might be worth adding a tiny note to the manual to >> point out that the special logic for "<row-valued-expression> IS [ NOT >> ] NULL" doesn't apply anywhere else that we handle nulls or talk about >> [non]-null values in the manual. See attached. > > Yes. This is a common point of confusion. Agreed. But I actually don't know whether Thomas's proposed language matches the actual behavior in every case. -- Robert Haas EnterpriseDB: http://www.enterprisedb.com The Enterprise PostgreSQL Company