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

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