Re: # of Records in Table

From: Date: Wed, 23 Jan 2002 21:20:24 +0000
Subject: Re: # of Records in Table
References: 1  Groups: php.db 
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Select your password field, and whatever other fields you need Use -mysql_num_rows() to capture the number of rows returned -mysql_data_seek() to position pointer on last row (remember indexing starts at 0) -mysql_fetch_row() or mysql_fetch_array(), your choice, to return the data. One select. One bit of relational theory I always ignore, but have come to appreciate as I gain experience, is the virtue of having a unique key on every table in a database. If that's a key I can rely on to steadily increase in value, so much the better. Hope this helps and gets you out of your fix - Miles Thompson At 01:52 PM 1/23/2002 -0700, Zach Curtis wrote:
The last record should be whatever the last record is in the table. For example, if there are 1000 records in the table which COUNT(*) will tell me, how can I get the password for record 1000. The only thing I can do that would probably work is two query statements, one selecting COUNT(*) and the other selecting "password". What I don't like about this method is that I would have to retrieve all of the passwords into an array, which I would assume would be slow on larger tables. Ideally, I thought their would be a way to do this operation in one select statement. Any thoughts? Zach -----Original Message----- From: DL Neil [mailto:PHPml@DandE.HomeChoice.co.uk] Sent: Wednesday, January 23, 2002 1:11 PM To: Zach Curtis; php-db@lists.php.net Subject: Re: [PHP-DB] # of Records in Table Zach, What syntax can I use to determine how many records are in a MySQL table and then retrieve the value of the field "password" for the last record? I tried using some combinations of COUNT(*) and LIMIT with no success. SELECT COUNT(*) will answer the first part. What did you try that lacked success? How do you define "last record"? We might need to see the table definition to answer this. Regards, =dn -- PHP Database Mailing List (http://www.php.net/) To unsubscribe, e-mail: php-db-unsubscribe@lists.php.net For additional commands, e-mail: php-db-help@lists.php.net To contact the list administrators, e-mail: php-list-admin@lists.php.net


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