min and max

[GarryJones]

I wish to assign a variable name to the MIN and MAX values of a field
in a table. The type is int(7).

I am extracting the field with many others with the following code
from a php call.

$ml_collect='SE LECT * FROM ml_lopp LEFT JOIN scfmforening ON
(scfmforening.s cfmnum=ml_lopp. scfmnum) LEFT JOIN ml_newtidplats ON
(ml_newtidplats .loppnum=ml_lop p.loppnum) ORDER BY date1,
ml_lopp.loppnum ';

$ml_upg=mysql_q uery($ml_collec t);

mysql_close();

The field is contained within the table ml_lopp and it is called
loppnum

I have been trying combinations of this to extract the min and max of
the field from the $ml_upg variable which includes all of the data to
be processed.

$lownum=mysql_r esult($ml_upg,M IN('loppnum'));
$hghnum=mysql_r esult($ml_upg,M AX('loppnum')); ;

.... of course the syntax is incorrect

and I am very greafull of any help in this matter.

Garry Jones
Sweden

[Jerry Stuckle]

Re: min and max

GarryJones wrote:

I wish to assign a variable name to the MIN and MAX values of a field
in a table. The type is int(7).
>
I am extracting the field with many others with the following code
from a php call.
>
$ml_collect='SE LECT * FROM ml_lopp LEFT JOIN scfmforening ON
(scfmforening.s cfmnum=ml_lopp. scfmnum) LEFT JOIN ml_newtidplats ON
(ml_newtidplats .loppnum=ml_lop p.loppnum) ORDER BY date1,
ml_lopp.loppnum ';
>
$ml_upg=mysql_q uery($ml_collec t);
>
mysql_close();
>
The field is contained within the table ml_lopp and it is called
loppnum
>
I have been trying combinations of this to extract the min and max of
the field from the $ml_upg variable which includes all of the data to
be processed.
>
$lownum=mysql_r esult($ml_upg,M IN('loppnum'));
$hghnum=mysql_r esult($ml_upg,M AX('loppnum')); ;
>
... of course the syntax is incorrect
>
and I am very greafull of any help in this matter.
>
Garry Jones
Sweden
>

Garry,

$ml_upg is a result set - it does not 'contain the results' - rather it
is an anchor used to retrieve the result sets.

You can retrieve the results one at a time, checking each retrieved row
to see if you have a larger or smaller value than previously retrieved
(or read everything into an array and find the min and max values that
way). Alternatively, you can issue another SQL statement to get the min
and max values of the field.

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Jerry Stuckle
JDS Computer Training Corp.
jstucklex@attgl obal.net
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