Re: Multiple Inheritance

tankgirl(at)worldonline(dot)es wrote:
> Hi everyone,
>
> I have found out that Postgres provides inheritance between tables.
>
> I wonder if 'multiple inheritance' can be implemented. I mean if
>a child table may have more than one parent table.
> And if this is possible what sql syntax does it follow.

It's in the man page for create_table:

CREATE [ TEMPORARY | TEMP ] TABLE table_name (
{ column_name type [ column_constraint [ ... ] ]
| table_constraint } [, ... ]
) [ INHERITS ( inherited_table [, ... ] ) ]
...
inherited_table
The optional INHERITS clause specifies a list of
table names from which this table automatically
inherits all fields. If any inherited field name
appears more than once, Postgres reports an error.
Postgres automatically allows the created table to
inherit functions on tables above it in the inheri­
tance hierarchy.

--
Oliver Elphick Oliver(dot)Elphick(at)lfix(dot)co(dot)uk
Isle of Wight http://www.lfix.co.uk/oliver
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