Обсуждение: add to table which name is in table

Hello

i have table:

create table table_names (
id                      SERIAL,
name                VARCHAR(75) NOT NULL
);

and for each name in table_names i have table (which name is name field from table_names).

So in table_names i have records:

1 table1

2 table2

3 table3

So i have three other tables named: table1 table2 table3.

And i want to operate on that tables by reading their names from table_names. I tried:

select * from (select name from table_names where id=1) as something;

but i received only:

 table_names
--------------
 table1
(1 row)

And i wanted to receive everything from table1.

How can i do it ?

Thanx

Michal

On Sat, 2004-07-17 at 08:41, teknet@poczta.onet.pl wrote:
> Hello
>
> i have table:
>
> create table table_names (
> id                      SERIAL,
> name                VARCHAR(75) NOT NULL
> );
>
>
>
> and for each name in table_names i have table (which name is name field from
> table_names).
>
> So in table_names i have records:
>
> 1 table1
>
> 2 table2
>
> 3 table3
>
>
>
> So i have three other tables named: table1 table2 table3.
>
> And i want to operate on that tables by reading their names from
> table_names. I tried:
>
> select * from (select name from table_names where id=1) as something;
>
> but i received only:
>
>  table_names
> --------------
>  table1
> (1 row)
>
> And i wanted to receive everything from table1.
>
> How can i do it ?

SQL can't do that.  You would need to do it by EXECUTE statements in a
PL/pgSQL function.

--
Oliver Elphick                                          olly@lfix.co.uk
Isle of Wight                              http://www.lfix.co.uk/oliver
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