Обсуждение: Is this possible.

Hi all,

Can sombody please help me realise a function, the intent as described by...

-- Function to create the table for a new point

CREATE OR REPLACE FUNCTION make_table( varchar ) RETURNS VARCHAR AS '
    CREATE TABLE $1(
        parameter varchar(8) NOT NULL,
        value float NOT NULL,
        dt timestamp NOT NULL
        );

    CREATE INDEX $1_dtindex ON $1( dt );

    SELECT $1;
' LANGUAGE SQL;

I'm using 7.4.5.

Thanks

Allan




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On Thu, 30 Mar 2006 10:45:20 +1100, "Harvey, Allan AC" <HarveyA@OneSteel.com> wrote:
> Hi all,
>
> Can sombody please help me realise a function, the intent as described by...
>
> -- Function to create the table for a new point
>
> CREATE OR REPLACE FUNCTION make_table( varchar ) RETURNS VARCHAR AS '
>     CREATE TABLE $1(
>         parameter varchar(8) NOT NULL,
>         value float NOT NULL,
>         dt timestamp NOT NULL
>         );

     execute ''create table ''||quote_ident($1)||'' (...)'';

>     CREATE INDEX $1_dtindex ON $1( dt );

    execute ''create index ''||quote_ident($1)||''_dtindex ...'';

>     SELECT $1;

    return $1;

> ' LANGUAGE SQL;

' language plpgsql;


quote_ident function should help with sql insertion attack.

klint.


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