RE: [PHP] counting number of records in a MySQL table; how do I get
| From: | Jason D | Date: | Thu, 03 Oct 2002 13:16:16 +0000 |
| Subject: | RE: [PHP] counting number of records in a MySQL table; how do I get | ||
| Groups: | php.general | ||
| Request: | Send a blank email to php-general+get-118733@lists.php.net to get a copy of this message | ||
An alternative way is to add a primary or unique key and make the code
snippet like this:
mysql_query("INSERT ignore into AuthNum (FirstNum, LastNum, NextNum, KeyField) VALUES
(1,2,3,1)",$dblink);
mysql_query("Update AuthNum Set FirstNum = 1, LastNum = 2, NextNum = 3",$dbLink);
If there is a record already the insert won't work because it will have the same
value in the key field. The update query is unchanged and there is no counting of
records.
I get the impression it's just a 1-record table.
> I need to do either an insert or update into a MySQL table. Insert if there
> are 0 records or update if one record exist:
>
> This is my code snippet:
>
> if (mysql_query("SELECT COUNT(*) FROM AuthNum") == 0) {
> mysql_query("INSERT into AuthNum (FirstNum, LastNum, NextNum) VALUES
> (1,2,3)",$dblink);
> } else {
> mysql_query("Update AuthNum Set FirstNum = 1, LastNum = 2, NextNum =
> 3",$dbLink);
> }
>
> My problem is, a record never gets inserted because the SELECT COUNT query
> is returning a resource ID of 2. How can I get the actual number of records
> in the table?
____________________________________________________________
Tired of all the SPAM in your inbox? Switch to LYCOS MAIL PLUS
http://www.mail.lycos.com/brandPage.shtml?pageId=plus