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Posted by Jerry Stuckle on 12/31/06 20:57
GT wrote:
> bill wrote:
>
>> Andy Hassall wrote:
>>
>>> On Sat, 30 Dec 2006 17:04:58 -0500, bill <nobody@spamcop.net> wrote:
>>>
>>>> I am sure there must be an easy way to determine the number of rows
>>>> in a table, but I can't find it.
>>>>
>>>
>>> select count(*) from your_table
>>>
>>
>> $total_rows = mysql_query ("SELECT COUNT(*) FROM Kennel");
>>
>> gives me a resource, not the count.
>
>
> I guess it would. If you were to do it that way:
>
> $result = mysql_query ("SELECT COUNT(*) FROM Kennel");
> $array = mysql_fetch_array($result);
> $rows = $array[0];
>
Yes, this would be the correct way to do it.
> (or similar - I've not tested, but something akin to that will work)
>
>> Fine, so I use:
>> $total_rows = mysql_query ("SELECT COUNT(*) FROM Kennel");
>> echo "Rows in table: " . mysql_num_rows ($total_rows) . "<br />";
>>
>> but that returns 1, and there are 4 rows in the table.
>
>
> No no!
> $result = mysql_query ("SELECT * FROM Kennel");
> $rows = mysql_num_rows ($result);
>
Definitely not! What if the table has 10M rows? You're asking they all
be returned to the program so they can be counted.
Let MySQL do the counting. That's what COUNT(*) does.
> HTH
--
==================
Remove the "x" from my email address
Jerry Stuckle
JDS Computer Training Corp.
jstucklex@attglobal.net
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