RE: [HACKERS] Subselects and NOTs
От | Meskes, Michael |
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Тема | RE: [HACKERS] Subselects and NOTs |
Дата | |
Msg-id | 11720CEF3853D011AC0C00A024B7A9E1112582@EINSTEIN обсуждение исходный текст |
Ответы |
Re: [HACKERS] Subselects and NOTs
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Список | pgsql-hackers |
Exactly the same with the latest Oracle7 version. Michael -- Dr. Michael Meskes, Project-Manager | topsystem Systemhaus GmbH meskes@topsystem.de | Europark A2, Adenauerstr. 20 meskes@debian.org | 52146 Wuerselen Go SF49ers! Go Rhein Fire! | Tel: (+49) 2405/4670-44 Use Debian GNU/Linux! | Fax: (+49) 2405/4670-10 > -----Original Message----- > From: Zeugswetter Andreas SARZ [SMTP:Andreas.Zeugswetter@telecom.at] > Sent: Wednesday, February 18, 1998 6:33 PM > To: 'pgsql-hackers@hub.org' > Subject: Re: [HACKERS] Subselects and NOTs > > This is what I did: > create table a (a int, a1 char(8)); > create table b (b int); > insert into a values (1, 'one'); > insert into a values (NULL, 'null'); > > > and this is what I got from Informix: > > select * from a where a not in (select * from b); > a a1 > 1 one > null > 2 row(s) retrieved. > > select * from a where not (a in (select * from b)); > a a1 > 1 one > null > 2 row(s) retrieved. > > select * from a where not a in (select * from b); > a a1 > 1 one > null > 2 row(s) retrieved. > > select * from a where a<>(select * from b); > a a1 > No rows found. > > select * from a where a=(select * from b); > a a1 > No rows found. > > Andreas
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