RE: [PHP-DB] adding to the current value
yes From: Justin Turner [EMAIL PROTECTED] To: php-db@lists.php.net Subject: [PHP-DB] adding to the current value Date: Thu, 29 Sep 2005 16:26:00 -0400 I would like to increment the current value of a field X without having to retrieve field X beforehand. Can I do this? Example: UPDATE my_table set field_1 = (current_field_value -1) WHERE...blah, blah, blah == A. Justin Turner -- PHP Database Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php -- PHP Database Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP-DB] adding to the current value
How can I do this? Bastien Koert wrote: yes From: Justin Turner [EMAIL PROTECTED] To: php-db@lists.php.net Subject: [PHP-DB] adding to the current value Date: Thu, 29 Sep 2005 16:26:00 -0400 I would like to increment the current value of a field X without having to retrieve field X beforehand. Can I do this? Example: UPDATE my_table set field_1 = (current_field_value -1) WHERE...blah, blah, blah == A. Justin Turner -- PHP Database Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php -- == A. Justin Turner ResNet Coordinator University of Rochester 020 Gates Wing Susan B. Anthony Hall [EMAIL PROTECTED] -- PHP Database Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
RE: [PHP-DB] adding to the current value
You do it by: UPDATE my_table set field_1 = field_1 - 1 [...add any where statements here] Bastien pretty much answered your question because the example you provided was, in theory, correct. Besides, unless you're messing with a production system, you could always just try out simple stuff like this on your own and see what happens. More fun that way anyhow. Rich -Original Message- From: Justin Turner [mailto:[EMAIL PROTECTED] Sent: Thursday, September 29, 2005 5:04 PM To: Bastien Koert Cc: php-db@lists.php.net Subject: Re: [PHP-DB] adding to the current value How can I do this? Bastien Koert wrote: yes From: Justin Turner [EMAIL PROTECTED] To: php-db@lists.php.net Subject: [PHP-DB] adding to the current value Date: Thu, 29 Sep 2005 16:26:00 -0400 I would like to increment the current value of a field X without having to retrieve field X beforehand. Can I do this? Example: UPDATE my_table set field_1 = (current_field_value -1) WHERE...blah, blah, blah == A. Justin Turner -- PHP Database Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php -- == A. Justin Turner ResNet Coordinator University of Rochester 020 Gates Wing Susan B. Anthony Hall [EMAIL PROTECTED] -- PHP Database Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php -- PHP Database Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP-DB] adding to the current value
...now don't I feel foolish. Thanks for your help. Hutchins, Richard wrote: You do it by: UPDATE my_table set field_1 = field_1 - 1 [...add any where statements here] Bastien pretty much answered your question because the example you provided was, in theory, correct. Besides, unless you're messing with a production system, you could always just try out simple stuff like this on your own and see what happens. More fun that way anyhow. Rich -Original Message- From: Justin Turner [mailto:[EMAIL PROTECTED] Sent: Thursday, September 29, 2005 5:04 PM To: Bastien Koert Cc: php-db@lists.php.net Subject: Re: [PHP-DB] adding to the current value How can I do this? Bastien Koert wrote: yes From: Justin Turner [EMAIL PROTECTED] To: php-db@lists.php.net Subject: [PHP-DB] adding to the current value Date: Thu, 29 Sep 2005 16:26:00 -0400 I would like to increment the current value of a field X without having to retrieve field X beforehand. Can I do this? Example: UPDATE my_table set field_1 = (current_field_value -1) WHERE...blah, blah, blah == A. Justin Turner -- PHP Database Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php -- == A. Justin Turner ResNet Coordinator University of Rochester 020 Gates Wing Susan B. Anthony Hall [EMAIL PROTECTED] -- PHP Database Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
