RE: [PHP-DB] Updating a record with math and division
No... UPDATE table SET value1 = value1 + increment Or... UPDATE table SET value1 = value1 * multiplier ...and so forth... -Original Message- From: Todd Williamsen [mailto:[EMAIL PROTECTED]] Sent: Friday, December 28, 2001 5:06 PM To: [EMAIL PROTECTED] Subject: Re: [PHP-DB] Updating a record with math and division Yes I got that much... So it would be UPDATE tblname SET value1 + $value1? "David Piasecki" <[EMAIL PROTECTED]> wrote in message 000201c18ffd$a8187ec0$a6ccb0d8@pc5">news:000201c18ffd$a8187ec0$a6ccb0d8@pc5... > You missed the first place you should have looked, the manual page on > the 'UPDATE' syntax: > http://www.mysql.com/doc/U/P/UPDATE.html > > > > -Original Message- > From: Todd Williamsen [mailto:[EMAIL PROTECTED]] > Sent: Friday, December 28, 2001 4:06 PM > To: [EMAIL PROTECTED] > Subject: Re: [PHP-DB] Updating a record with math and division > > That isn't the answer I was looking for... > > Since you are so nice could you be so kind in point > me > where these golden docs are? I looked all over php.net and mysql.com, > nada not only that the three books I have as well. I am a newbie at > this, and do need a bit of hand holding thanks... > > > "Miles Thompson" <[EMAIL PROTECTED]> wrote in message > news:[EMAIL PROTECTED]... > > > > Read the docs for the database in question. They will tell you what is > and > is not allowed. > > Miles Thompson > > > > On Friday 28 December 2001 06:26 pm, Todd Williamsen wrote: > > > Ok > > > > > > So to update a record lets say... > > > > > > I have a current value of 150 and the new value will be 250 now how > would I > > > total them to equal 400? > > > > > > I was thinking > > > > > > $sql = "UPDATE $table value1 = value1 + ? > > > > > > is that correct? how do you update it with simple math? > > > > > > What about division... > > > > > > take the current value in the database + the new value divided by > another > > > number, lets say another field > > > > -- > PHP Database Mailing List (http://www.php.net/) > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > To contact the list administrators, e-mail: [EMAIL PROTECTED] > > > -- PHP Database Mailing List (http://www.php.net/) To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] To contact the list administrators, e-mail: [EMAIL PROTECTED] -- PHP Database Mailing List (http://www.php.net/) To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] To contact the list administrators, e-mail: [EMAIL PROTECTED]
Re: [PHP-DB] Updating a record with math and division
Sarcasm be damned. If it's MySQL, then http://www.mysql.com/doc/ and it's searchable. I've worked with four SQL databases and they are similar enough that I always have to refer to the docs when things stop working. Tricks in one don't necessarily work in the others. You need to look at the UPDATE command for whatever database you are using. To answer your question, many databases allow UPDATE set field = field + $var, and it's a good idea to add a where condition, otherwise you change every record in the table Miles Thompson On Friday 28 December 2001 08:05 pm, Todd Williamsen wrote: > That isn't the answer I was looking for... > > Since you are so nice could you be so kind in point me > where these golden docs are? I looked all over php.net and mysql.com, > nada not only that the three books I have as well. I am a newbie at > this, and do need a bit of hand holding thanks... > > > "Miles Thompson" <[EMAIL PROTECTED]> wrote in message > news:[EMAIL PROTECTED]... > > > Read the docs for the database in question. They will tell you what is > > and > > is not allowed. > > > Miles Thompson > > > > On Friday 28 December 2001 06:26 pm, Todd Williamsen wrote: > > > Ok > > > > > > So to update a record lets say... > > > > > > I have a current value of 150 and the new value will be 250 now how > > would I > > > > total them to equal 400? > > > > > > I was thinking > > > > > > $sql = "UPDATE $table value1 = value1 + ? > > > > > > is that correct? how do you update it with simple math? > > > > > > What about division... > > > > > > take the current value in the database + the new value divided by > > another > > > > number, lets say another field -- PHP Database Mailing List (http://www.php.net/) To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] To contact the list administrators, e-mail: [EMAIL PROTECTED]
Re: [PHP-DB] Updating a record with math and division
Yes I got that much... So it would be UPDATE tblname SET value1 + $value1? "David Piasecki" <[EMAIL PROTECTED]> wrote in message 000201c18ffd$a8187ec0$a6ccb0d8@pc5">news:000201c18ffd$a8187ec0$a6ccb0d8@pc5... > You missed the first place you should have looked, the manual page on > the 'UPDATE' syntax: > http://www.mysql.com/doc/U/P/UPDATE.html > > > > -Original Message- > From: Todd Williamsen [mailto:[EMAIL PROTECTED]] > Sent: Friday, December 28, 2001 4:06 PM > To: [EMAIL PROTECTED] > Subject: Re: [PHP-DB] Updating a record with math and division > > That isn't the answer I was looking for... > > Since you are so nice could you be so kind in point > me > where these golden docs are? I looked all over php.net and mysql.com, > nada not only that the three books I have as well. I am a newbie at > this, and do need a bit of hand holding thanks... > > > "Miles Thompson" <[EMAIL PROTECTED]> wrote in message > news:[EMAIL PROTECTED]... > > > > Read the docs for the database in question. They will tell you what is > and > is not allowed. > > Miles Thompson > > > > On Friday 28 December 2001 06:26 pm, Todd Williamsen wrote: > > > Ok > > > > > > So to update a record lets say... > > > > > > I have a current value of 150 and the new value will be 250 now how > would I > > > total them to equal 400? > > > > > > I was thinking > > > > > > $sql = "UPDATE $table value1 = value1 + ? > > > > > > is that correct? how do you update it with simple math? > > > > > > What about division... > > > > > > take the current value in the database + the new value divided by > another > > > number, lets say another field > > > > -- > PHP Database Mailing List (http://www.php.net/) > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > To contact the list administrators, e-mail: [EMAIL PROTECTED] > > > -- PHP Database Mailing List (http://www.php.net/) To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] To contact the list administrators, e-mail: [EMAIL PROTECTED]
RE: [PHP-DB] Updating a record with math and division
You missed the first place you should have looked, the manual page on the 'UPDATE' syntax: http://www.mysql.com/doc/U/P/UPDATE.html -Original Message- From: Todd Williamsen [mailto:[EMAIL PROTECTED]] Sent: Friday, December 28, 2001 4:06 PM To: [EMAIL PROTECTED] Subject: Re: [PHP-DB] Updating a record with math and division That isn't the answer I was looking for... Since you are so nice could you be so kind in point me where these golden docs are? I looked all over php.net and mysql.com, nada not only that the three books I have as well. I am a newbie at this, and do need a bit of hand holding thanks... "Miles Thompson" <[EMAIL PROTECTED]> wrote in message news:[EMAIL PROTECTED]... > > Read the docs for the database in question. They will tell you what is and is not allowed. > Miles Thompson > > On Friday 28 December 2001 06:26 pm, Todd Williamsen wrote: > > Ok > > > > So to update a record lets say... > > > > I have a current value of 150 and the new value will be 250 now how would I > > total them to equal 400? > > > > I was thinking > > > > $sql = "UPDATE $table value1 = value1 + ? > > > > is that correct? how do you update it with simple math? > > > > What about division... > > > > take the current value in the database + the new value divided by another > > number, lets say another field -- PHP Database Mailing List (http://www.php.net/) To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] To contact the list administrators, e-mail: [EMAIL PROTECTED] -- PHP Database Mailing List (http://www.php.net/) To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] To contact the list administrators, e-mail: [EMAIL PROTECTED]
Re: [PHP-DB] Updating a record with math and division
That isn't the answer I was looking for... Since you are so nice could you be so kind in point me where these golden docs are? I looked all over php.net and mysql.com, nada not only that the three books I have as well. I am a newbie at this, and do need a bit of hand holding thanks... "Miles Thompson" <[EMAIL PROTECTED]> wrote in message news:[EMAIL PROTECTED]... > > Read the docs for the database in question. They will tell you what is and is not allowed. > Miles Thompson > > On Friday 28 December 2001 06:26 pm, Todd Williamsen wrote: > > Ok > > > > So to update a record lets say... > > > > I have a current value of 150 and the new value will be 250 now how would I > > total them to equal 400? > > > > I was thinking > > > > $sql = "UPDATE $table value1 = value1 + ? > > > > is that correct? how do you update it with simple math? > > > > What about division... > > > > take the current value in the database + the new value divided by another > > number, lets say another field -- PHP Database Mailing List (http://www.php.net/) To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] To contact the list administrators, e-mail: [EMAIL PROTECTED]
Re: [PHP-DB] Updating a record with math and division
Read the docs for the database in question. They will tell you what is and is not allowed. Miles Thompson On Friday 28 December 2001 06:26 pm, Todd Williamsen wrote: > Ok > > So to update a record lets say... > > I have a current value of 150 and the new value will be 250 now how would I > total them to equal 400? > > I was thinking > > $sql = "UPDATE $table value1 = value1 + ? > > is that correct? how do you update it with simple math? > > What about division... > > take the current value in the database + the new value divided by another > number, lets say another field -- PHP Database Mailing List (http://www.php.net/) To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] To contact the list administrators, e-mail: [EMAIL PROTECTED]
