Обсуждение: id field error

Hi !
I´m doing my first publishing system for a last aquired boooks for a library.

the problem begin in the id field, wich i choose to be primary key and unique.
i could just insert data one time the others give me this error:

 Cannot insert a duplicate key into unique index biblioteca_pkey

i use this piece of code below to insert the data:

$query = "INSERT INTO biblioteca (id, autor, titulo, editora) values ('$id',
'$autor', '$titulo', '$editora')";
$result = pg_exec($db, $query);

may i can alter the id collumn and the query to insert the data anybody
knows what exactly to do ?

Thank´s

Ângelo




________________________________________
A busca mais veloz e precisa da internet. Acesse agora: http://www.zoom.com.br.

On Thu, 2002-04-25 at 16:00, angelo.rigo@globo.com wrote:
> Hi !
> I´m doing my first publishing system for a last aquired boooks for a library.
>
> the problem begin in the id field, wich i choose to be primary key and unique.
> i could just insert data one time the others give me this error:
>
>  Cannot insert a duplicate key into unique index biblioteca_pkey
>
> i use this piece of code below to insert the data:
>
> $query = "INSERT INTO biblioteca (id, autor, titulo, editora) values ('$id',
> '$autor', '$titulo', '$editora')";
> $result = pg_exec($db, $query);
>
> may i can alter the id collumn and the query to insert the data anybody
> knows what exactly to do ?
>
> Thank´s
>
> Ângelo
>

Design your table so that id is of type serial. This lets it
auto-increment the idea. Then do this:

$query = "INSERT INTO biblioteca (autor, titulo, editora)
    values ('$autor', '$titulo', '$editora')";
$result = pg_exec($db, $query);

--
Jeff Self
Information Technology Analyst
Department of Personnel
City of Newport News
2400 Washington Ave.
Newport News, VA 23607
757-926-6930

You can either use the datatype "SERIAL" or if you have a way of
generating unique IDs based off of microtimes, you can get away with
putting a unique value into field "id" as it is right now.

Roj Niyogi
pgHoster
PostgreSQL web hosting

angelo.rigo@globo.com wrote:

>Hi !
>I´m doing my first publishing system for a last aquired boooks for a library.
>
>the problem begin in the id field, wich i choose to be primary key and unique.
>i could just insert data one time the others give me this error:
>
> Cannot insert a duplicate key into unique index biblioteca_pkey
>
>i use this piece of code below to insert the data:
>
>$query = "INSERT INTO biblioteca (id, autor, titulo, editora) values ('$id',
>'$autor', '$titulo', '$editora')";
>$result = pg_exec($db, $query);
>
>may i can alter the id collumn and the query to insert the data anybody
>knows what exactly to do ?
>
>Thank´s
>
>Ângelo
>
>
>
>
>________________________________________
>A busca mais veloz e precisa da internet. Acesse agora: http://www.zoom.com.br.
>
>
>---------------------------(end of broadcast)---------------------------
>TIP 4: Don't 'kill -9' the postmaster
>
>
>
>

You can either use the datatype "SERIAL" or if you have a way of
generating unique IDs based off of microtimes, you can get away with
putting a unique value into field "id" as it is right now.

Roj Niyogi
pgHoster
PostgreSQL web hosting

angelo.rigo@globo.com wrote:

>Hi !
>I´m doing my first publishing system for a last aquired boooks for a library.
>
>the problem begin in the id field, wich i choose to be primary key and unique.
>i could just insert data one time the others give me this error:
>
> Cannot insert a duplicate key into unique index biblioteca_pkey
>
>i use this piece of code below to insert the data:
>
>$query = "INSERT INTO biblioteca (id, autor, titulo, editora) values ('$id',
>'$autor', '$titulo', '$editora')";
>$result = pg_exec($db, $query);
>
>may i can alter the id collumn and the query to insert the data anybody
>knows what exactly to do ?
>
>Thank´s
>
>Ângelo
>
>
>
>
>________________________________________
>A busca mais veloz e precisa da internet. Acesse agora: http://www.zoom.com.br.
>
>
>---------------------------(end of broadcast)---------------------------
>TIP 4: Don't 'kill -9' the postmaster
>
>
>
>