A view needs at least one column whereas a table doesn't...
От
Gurjeet Singh
Тема
A view needs at least one column whereas a table doesn't...
Дата
Msg-id
65937bea0702130759g750436bbhb244bc9fd5ec343f@mail.gmail.com
Список
Дерево обсуждения
A view needs at least one column whereas a table doesn't... "Gurjeet Singh" <singh.gurjeet@gmail.com>
Re: A view needs at least one column whereas a table doesn't... Tom Lane <tgl@sss.pgh.pa.us>
The first SQL command throws an error whereas the second one runs fine:
edb=# create schema s1 authorization u1
edb-# create table t1() create view v1 as select * from t1;
ERROR: view must have at least one column
edb=#
edb=# create schema s1 authorization u1
edb-# create table t1( c1 int ) create view v1 as select * from t1;
CREATE SCHEMA
edb=#
I know the ERROR seems obvious, but then if we allow zero-column tables, then why not zero-column views?
Or should the question be, why do we allow zero-column tables? (is inheritance the only reason?)
Can someone provide some explanation for this behaviour?
Best regards,
--
gurjeet[.singh]@EnterpriseDB.com
singh.gurjeet@{ gmail | hotmail | yahoo }.com
17°29'34.37"N 78°30'59.76"E
edb=# create schema s1 authorization u1
edb-# create table t1() create view v1 as select * from t1;
ERROR: view must have at least one column
edb=#
edb=# create schema s1 authorization u1
edb-# create table t1( c1 int ) create view v1 as select * from t1;
CREATE SCHEMA
edb=#
I know the ERROR seems obvious, but then if we allow zero-column tables, then why not zero-column views?
Or should the question be, why do we allow zero-column tables? (is inheritance the only reason?)
Can someone provide some explanation for this behaviour?
Best regards,
--
gurjeet[.singh]@EnterpriseDB.com
singh.gurjeet@{ gmail | hotmail | yahoo }.com
17°29'34.37"N 78°30'59.76"E
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