9.17.5. Row-wise Comparison
"These constructs test a row value for null or not null. A row value is
considered not null if it has at least one field that is not null."
I suppose, it should be changed too.
Tom Lane wrote:
> the SQL spec, viz IS NULL is true if all the row's fields are null, IS NOT
> NULL is true if all the row's fields are not null. The former coding got
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Teodor Sigaev E-mail: teodor@sigaev.ru
WWW: http://www.sigaev.ru/