[PHP] Little Info...
This is a bit related to PHP but mostly mySQL (is there a similar list for this stuff? Let me know please) In my mySQL query editor, I am trying to return a value of 0 when there is no related rows from this query: (select if(count(ip.payment_amount) IS NOT NULL, count(ip.payment_amount) , 0) FROM tl_trans_pmt_items ip WHERE t.transaction_id = ip.inv_id GROUP BY ip.inv_id) as d, regardless of the combination I use, invalid relationships come back as NULL - need to return 0 so I can use it in a math formula. Probably simple - maybe ;-) Thanks, Don -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Little Info...
On Wed, Feb 29, 2012 at 13:01, Don Wieland d...@pointmade.net wrote: This is a bit related to PHP but mostly mySQL (is there a similar list for this stuff? Let me know please) php...@lists.php.net and p...@lists.mysql.com, specifically. -- /Daniel P. Brown Network Infrastructure Manager http://www.php.net/ -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Little Info...
On Wed, Feb 29, 2012 at 7:01 PM, Don Wieland d...@pointmade.net wrote: This is a bit related to PHP but mostly mySQL (is there a similar list for this stuff? Let me know please) In my mySQL query editor, I am trying to return a value of 0 when there is no related rows from this query: (select if(count(ip.payment_amount) IS NOT NULL, count(ip.payment_amount) , 0) FROM tl_trans_pmt_items ip WHERE t.transaction_id = ip.inv_id GROUP BY ip.inv_id) as d, regardless of the combination I use, invalid relationships come back as NULL - need to return 0 so I can use it in a math formula. Probably simple - maybe ;-) Thanks, Don While Daniel is right, you can use COALESCE for this. eg. select COALESCE(count(ip.payment_amount), 0) - Matijn -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Little Info...
On Wed, 2012-02-29 at 19:27 +0100, Matijn Woudt wrote: On Wed, Feb 29, 2012 at 7:01 PM, Don Wieland d...@pointmade.net wrote: This is a bit related to PHP but mostly mySQL (is there a similar list for this stuff? Let me know please) In my mySQL query editor, I am trying to return a value of 0 when there is no related rows from this query: (select if(count(ip.payment_amount) IS NOT NULL, count(ip.payment_amount) , 0) FROM tl_trans_pmt_items ip WHERE t.transaction_id = ip.inv_id GROUP BY ip.inv_id) as d, regardless of the combination I use, invalid relationships come back as NULL - need to return 0 so I can use it in a math formula. Probably simple - maybe ;-) Thanks, Don While Daniel is right, you can use COALESCE for this. eg. select COALESCE(count(ip.payment_amount), 0) - Matijn What's wrong with checking the number of rows returned in PHP? If the number of rows is 0, you have no results. If the number is 1, then use the SQL results value. -- Thanks, Ash http://www.ashleysheridan.co.uk
