Re: Updating Integer value in DB
This WebDNA talk-list message is from 2007
It keeps the original formatting.
numero = 68683
interpreted = N
texte = Ki Song wrote: > Really quick question. I am trying to create a call to a products.db to > update a quantity on an inventory item so that, for example, if the value > that is in the db currently is 2, and I wanted to add 1 to the quantity, how > would I accomplish this? > > I wrote the following replace command, but it doesn't seem to work: > > [replace db=^inventory.db&wqSKUdatarq=[SKU]]ON HAND=[MATH]ON > HAND+[updatevalue][/MATH][/replace] > > updatevalue = an integer, positive or negative, that is used to change the > ON HAND. > > For example: > SKU= test > ON HAND= 3 > updatevalue= 45 > > After this replace is done, ON HAND should = 48. Couple of other points to go with the good points that have been said. You *can* use "On_Hand" without the brackets as long it is a *math variable* and it is inside a math context. I am guessing you are grabbing this value from the database *before* the replace context is used?.. so it depends on how you are initializing the variable (math or text) weather you need the brackets. If I were you, once you get a replace context that you think should work, but doesn't. troubleshoot it by taking out the first and last brackets to see exactly what values are being input into the replace context: replace db=^inventory.db&eqSKUdatarq=[url][SKU][/url]]ON_HAND=[MATH]ON_HAND+[updatevalue][/MATH][/replace Lastly, along with what Matthew was talking about, "[math]" doesn't like to see blank values, and will break if that happens. A trick to getting around this, if you think there is a chance for a blank value, is to put a 0 before the questionable value/s..: ON_HAND=[math]0[ON_HAND]+0[updatevalue][/math] Donovan -- =o=o=o=o=o=o=o=o=o=o=o=o=o=o=o=o=o=o=o=o=o=o=o=o=o DONOVAN D. BROOKE EUCA Design Center <- Web Development (specializing in eCommerce),-> <- Desktop Publishing, Print Consulting, Labels -> <-Glass Products, off-hand Classes/studio rental-> PH:> (608) 835-2476 | Forum:> http://egg.bz/forum/ Web Sites:> http://www.euca.us & http://www.egg.bz =o=o=o=o=o=o=o=o=o=o=o=o=o=o=o=o=o=o=o=o=o=o=o=o=o ------------------------------------------------------------- This message is sent to you because you are subscribed to the mailing list
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Associated Messages, from the most recent to the oldest:
Ki Song wrote: > Really quick question. I am trying to create a call to a products.db to > update a quantity on an inventory item so that, for example, if the value > that is in the db currently is 2, and I wanted to add 1 to the quantity, how > would I accomplish this? > > I wrote the following replace command, but it doesn't seem to work: > > [replace db=^inventory.db&wqSKUdatarq=[SKU]]ON HAND=[math]ON > HAND+[updatevalue][/MATH][/replace] > > updatevalue = an integer, positive or negative, that is used to change the > ON HAND. > > For example: > SKU= test > ON HAND= 3 > updatevalue= 45 > > After this replace is done, ON HAND should = 48. Couple of other points to go with the good points that have been said. You *can* use "On_Hand" without the brackets as long it is a *math variable* and it is inside a math context. I am guessing you are grabbing this value from the database *before* the replace context is used?.. so it depends on how you are initializing the variable (math or text) weather you need the brackets. If I were you, once you get a replace context that you think should work, but doesn't. troubleshoot it by taking out the first and last brackets to see exactly what values are being input into the replace context: replace db=^inventory.db&eqSKUdatarq=[url][SKU][/url]]ON_HAND=[math]ON_HAND+[updatevalue][/MATH][/replace Lastly, along with what Matthew was talking about, "[math]" doesn't like to see blank values, and will break if that happens. A trick to getting around this, if you think there is a chance for a blank value, is to put a 0 before the questionable value/s..: ON_HAND=[math]0[ON_HAND]+0[updatevalue][/math] Donovan -- =o=o=o=o=o=o=o=o=o=o=o=o=o=o=o=o=o=o=o=o=o=o=o=o=o DONOVAN D. BROOKE EUCA Design Center <- Web Development (specializing in eCommerce),-> <- Desktop Publishing, Print Consulting, Labels -> <-Glass Products, off-hand Classes/studio rental-> PH:> (608) 835-2476 | Forum:> http://egg.bz/forum/ Web Sites:> http://www.euca.us & http://www.egg.bz =o=o=o=o=o=o=o=o=o=o=o=o=o=o=o=o=o=o=o=o=o=o=o=o=o ------------------------------------------------------------- This message is sent to you because you are subscribed to the mailing list . To unsubscribe, E-mail to: To switch to the DIGEST mode, E-mail to Web Archive of this list is at: http://webdna.smithmicro.com/
Donovan Brooke
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