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BUG #16511: Using '= all ( )' with empty table returns true - Mailing list pgsql-bugs

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Subject BUG #16511: Using '= all ( )' with empty table returns true
Date
Msg-id 16511-ca1a7368d7453b7b@postgresql.org
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Responses Re: BUG #16511: Using '= all ( )' with empty table returns true
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The following bug has been logged on the website:

Bug reference:      16511
Logged by:          Anton Luhavy
Email address:      anton.lugovoy.hopni@gmail.com
PostgreSQL version: 10.7
Operating system:   MacOS
Description:

Given table is "task" (id uuid primary key, status text not null),
Query "select 'b' = all (select status from task where status = 'a')"
returns true if table "task" is empty

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