Thread

RE: : Execute a string of command in sql'script

Henshall, Stuart - WCP <shenshall@westcountrypublications.co.uk> — 2001-01-29T13:10:07Z

	Could you execute aa system command (perhaps in a c function using
system) to pass this command to psql. (maybe write it to a file first then
redirect stdin, or perhaps pipe an echo command if using shell to exec
psql.) (ok so theres got to be a better way, but it might work :) )
- Stuart

> -----Original Message-----
> From:	pblunat [SMTP:pblunat@ujf-grenoble.fr]
> Sent:	Monday, January 29, 2001 12:30 PM
> To:	pgsql-general@postgresql.org
> Subject:	: Execute a string of command in sql'script
> 
> Hi all,
> I am so sorry but problem below is very urgent for me now!!!
> If isn't possible to do, i must take another way of developpement for my
> data base.
> 
> I'm using PostgreSQL 7.0.2 on RedHat 6.0.
> 
>  I compose a SQL command string with function below :
> 
> 
>  CREATE FUNCTION bdrm_copy(text, text) RETURNS text AS '
> 
>   DECLARE
>    baseact  ALIAS FOR $1;
>    namefich ALIAS FOR $2;
>    path0 TEXT;
>    path1 TEXT;
>    path2 TEXT;
>    path3 TEXT;
>   BEGIN
>    SELECT INTO path0 CAST(ig_tempo AS TEXT)
>    FROM ti_bdrm
>    WHERE ig_base = baseact;
>    path0  := trim(path0) || trim(namefich);
>    path1 := ''COPY ttx_window7 TO \'\''';
>    path2 := path1 || path0;
>    path3 := ''\'\''';
>    path0  := path2 || path3 || '';'';
>    RETURN path0 ;
>   END;'
>  LANGUAGE 'plpgsql';
> 
> 
>  the result of :
> 
>  SELECT bdrm_copy('MOHO99', 'test2.txt') AS my_command_string;
> 
>  is :
> 
>                 my_command_string
>  -----------------------------------------------
>   COPY ttx_window7 TO '/db/bdrm/out/test2.txt';
> 
> 
>  Is it possible to execute this line of command? More generally, can one
>  execute the contents of a variable or a field in postgresql' script?
> 
> Thanks ;)-
> 
> 
> 
>