At 09:31 16.07.01 +0200, Beatriz Lapaz wrote:
>Hi!!
>
>I'm working with PHP and I use MySQL. I've just known that in MySQL
>doesn't exist NESTED SELECTS and it's a problem for me.
>I'd need a query to get all the ids from a table which are not in another
>table. Something like that:
>
>SELECT TABLE.id_field NOT IN (SELECT ANOTHER_TABLE.id_field);
>
>Could you help me? Thanks.
Hi,the problem is, that mysql can not nested selects.
I have make a work around in php.
First I make a list with e.g ids like that ('3','4','5') and then the
SELECT TABLE.id_field NOT IN ('3','4','5')
here the script in php in eine classe eingebaut.
$da = explode ("-",$datum);
$q = sprintf ("select lkwangemeldetid from disposition where
dayofmonth(datumderdisposition) =%d and month(datumderdisposition)=%d and
year (datumderdisposition)= %d",$da[2],$da[1],$da[0]);
$this->qdc->query ($q);
$liste="''";
while($this->qdc->next_record())
{
if ($liste == "''")$liste ="";
$liste.=sprintf ("'%s',",$this->qdc->f(lkwangemeldetid));
}
if ($liste != "''")
$liste=substr($liste,0,-1);
return $liste;
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