RE: Best way to do this query
I'd suggest using a stored procedure with a transaction and do it in the database. CF is rather aggressive in how it locks the db, and this can lead to performance problems if the db gets a lot of use. SP's give you a performance boost, and aren't that hard to do, especially once you have the SQL written. And rather than do your increment in a function call, you could do it in SQL:select buildcount + 1 from bbstat where id = #id# and buildtime= #buildtime# Jeff Polaski Manager, Web Services Research & Graduate Studies University California, Irvine -Original Message- From: Phillip Broussard [mailto:[EMAIL PROTECTED]] Sent: Tuesday, February 19, 2002 12:03 PM To: CF-Talk Subject: Best way to do this query Sorry to ask but I have a dead brain right now. (I hate it when I feel dumb.) X¿x ~~~ I need to check the database to see if a record is there. If it's there then increment it by one, otherwise add the record. If two people hit it at the right time I may get two records. What should I do to prevent this? This is what the code would look like. select * from bbstat where id = #id# and buildtime = #buildtime# update bbstat set buildcount=#IncrementValue(buildcount)# where id=#id# insert into bbstat (id,buildcount) values (#id#,1) Phillip Broussard Tracker Marine Group 417-873-5957 __ Why Share? Dedicated Win 2000 Server · PIII 800 / 256 MB RAM / 40 GB HD / 20 GB MO/XFER Instant Activation · $99/Month · Free Setup http://www.pennyhost.com/redirect.cfm?adcode=coldfusionc FAQ: http://www.thenetprofits.co.uk/coldfusion/faq Archives: http://www.mail-archive.com/cf-talk@houseoffusion.com/ Unsubscribe: http://www.houseoffusion.com/index.cfm?sidebar=lists
RE: Best way to do this query
DOH! I need to get some fresh air because that was too obvious. Thanks all. Phillip > -Original Message- > From: C. Hatton Humphrey [mailto:[EMAIL PROTECTED]] > Sent: Tuesday, February 19, 2002 2:13 PM > To: CF-Talk > Subject: RE: Best way to do this query > > Use CFLock. It will put the two people in a single file line when > executing > the code, removing the possibility of a double-hit. > > Hatton > > > > -Original Message- > > From: Phillip Broussard [mailto:[EMAIL PROTECTED]] > > Sent: Tuesday, February 19, 2002 3:03 PM > > To: CF-Talk > > Subject: Best way to do this query > > > > > > Sorry to ask but I have a dead brain right now. (I hate it when I feel > > dumb.) > > > > X¿x > > ~~~ > > > > I need to check the database to see if a record is there. > > If it's there then increment it by one, otherwise add the record. > > If two people hit it at the right time I may get two records. What > > should I > > do to prevent this? > > This is what the code would look like. > > > > > > select * from bbstat where id = #id# and buildtime = #buildtime# > > > > > > > > > > > > > > update bbstat > > set buildcount=#IncrementValue(buildcount)# > > where id=#id# > > > > > > > > insert into bbstat > > (id,buildcount) > > values (#id#,1) > > > > > > > > > > Phillip Broussard > > Tracker Marine Group > > 417-873-5957 > > > > > > > __ Dedicated Windows 2000 Server PIII 800 / 256 MB RAM / 40 GB HD / 20 GB MO/XFER Instant Activation · $99/Month · Free Setup http://www.pennyhost.com/redirect.cfm?adcode=coldfusiona FAQ: http://www.thenetprofits.co.uk/coldfusion/faq Archives: http://www.mail-archive.com/cf-talk@houseoffusion.com/ Unsubscribe: http://www.houseoffusion.com/index.cfm?sidebar=lists
Re: Best way to do this query
I've faced this before and I usually use cflock to prevent 2 users from inserting the record at the same time. > Sorry to ask but I have a dead brain right now. (I hate it when I feel > dumb.) > > X¿x > ~~~ > > I need to check the database to see if a record is there. > If it's there then increment it by one, otherwise add the record. > If two people hit it at the right time I may get two records. What > should I > do to prevent this? > This is what the code would look like. > > > select * from bbstat where id = #id# and buildtime = #buildtime# > > > > > > > update bbstat > set buildcount=#IncrementValue(buildcount)# > where id=#id# > > > > insert into bbstat > (id,buildcount) > values (#id#,1) > > > > > Phillip Broussard > Tracker Marine Group > 417-873-5957 Nathaniel Horwitz Developer http://www.nathanielhorwitz.com __ Dedicated Windows 2000 Server PIII 800 / 256 MB RAM / 40 GB HD / 20 GB MO/XFER Instant Activation · $99/Month · Free Setup http://www.pennyhost.com/redirect.cfm?adcode=coldfusiona FAQ: http://www.thenetprofits.co.uk/coldfusion/faq Archives: http://www.mail-archive.com/cf-talk@houseoffusion.com/ Unsubscribe: http://www.houseoffusion.com/index.cfm?sidebar=lists
RE: Best way to do this query
Use CFLock. It will put the two people in a single file line when executing the code, removing the possibility of a double-hit. Hatton > -Original Message- > From: Phillip Broussard [mailto:[EMAIL PROTECTED]] > Sent: Tuesday, February 19, 2002 3:03 PM > To: CF-Talk > Subject: Best way to do this query > > > Sorry to ask but I have a dead brain right now. (I hate it when I feel > dumb.) > > X¿x > ~~~ > > I need to check the database to see if a record is there. > If it's there then increment it by one, otherwise add the record. > If two people hit it at the right time I may get two records. What > should I > do to prevent this? > This is what the code would look like. > > > select * from bbstat where id = #id# and buildtime = #buildtime# > > > > > > > update bbstat > set buildcount=#IncrementValue(buildcount)# > where id=#id# > > > > insert into bbstat > (id,buildcount) > values (#id#,1) > > > > > Phillip Broussard > Tracker Marine Group > 417-873-5957 > > > __ Get Your Own Dedicated Windows 2000 Server PIII 800 / 256 MB RAM / 40 GB HD / 20 GB MO/XFER Instant Activation · $99/Month · Free Setup http://www.pennyhost.com/redirect.cfm?adcode=coldfusionb FAQ: http://www.thenetprofits.co.uk/coldfusion/faq Archives: http://www.mail-archive.com/cf-talk@houseoffusion.com/ Unsubscribe: http://www.houseoffusion.com/index.cfm?sidebar=lists
RE: Best way to do this query
just wrap it up in a cflock studio will give you the specifics -Original Message- From: Phillip Broussard [mailto:[EMAIL PROTECTED]] Sent: Tuesday, February 19, 2002 12:03 PM To: CF-Talk Subject: Best way to do this query Sorry to ask but I have a dead brain right now. (I hate it when I feel dumb.) X¿x ~~~ I need to check the database to see if a record is there. If it's there then increment it by one, otherwise add the record. If two people hit it at the right time I may get two records. What should I do to prevent this? This is what the code would look like. select * from bbstat where id = #id# and buildtime = #buildtime# update bbstat set buildcount=#IncrementValue(buildcount)# where id=#id# insert into bbstat (id,buildcount) values (#id#,1) Phillip Broussard Tracker Marine Group 417-873-5957 __ Dedicated Windows 2000 Server PIII 800 / 256 MB RAM / 40 GB HD / 20 GB MO/XFER Instant Activation · $99/Month · Free Setup http://www.pennyhost.com/redirect.cfm?adcode=coldfusiona FAQ: http://www.thenetprofits.co.uk/coldfusion/faq Archives: http://www.mail-archive.com/cf-talk@houseoffusion.com/ Unsubscribe: http://www.houseoffusion.com/index.cfm?sidebar=lists
RE: Best way to do this query
Would a cftransaction be sufficient here, if you have the ability to maybe a stored procedure would be better. If not swap a cflock around the block of code should to the trick as well. -Original Message- From: Phillip Broussard [mailto:[EMAIL PROTECTED]] Sent: Wednesday, 20 February 2002 7:03 AM To: CF-Talk Subject: Best way to do this query Sorry to ask but I have a dead brain right now. (I hate it when I feel dumb.) X¿x ~~~ I need to check the database to see if a record is there. If it's there then increment it by one, otherwise add the record. If two people hit it at the right time I may get two records. What should I do to prevent this? This is what the code would look like. __ Why Share? Dedicated Win 2000 Server · PIII 800 / 256 MB RAM / 40 GB HD / 20 GB MO/XFER Instant Activation · $99/Month · Free Setup http://www.pennyhost.com/redirect.cfm?adcode=coldfusionc FAQ: http://www.thenetprofits.co.uk/coldfusion/faq Archives: http://www.mail-archive.com/cf-talk@houseoffusion.com/ Unsubscribe: http://www.houseoffusion.com/index.cfm?sidebar=lists
