MySQL dying?
I have heard that due to Oracle taking over, the OS community is shifting to other type of DB's . Any thoughts? -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/mysql
best way to have a unique key
Due to certain reasons, the company I am doing business with has decided that the primary key, for an orders table, be a unique key; however, I don't like the possibility of it conflicting if moved to another machine. What are some pitfalls of using a unique key, that is generated by a server side script, rather than by mysql? What are the best ways to do this? Please keep in mind this variable will also be displayed on the customer's Receipt, but again, since it's random, it doesn't have to mean anything. -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/mysql?unsub=arch...@jab.org
Re: best way to have a unique key
Dude, come on. I know that all primary keys have to be unique; however, I was obviously referring to the use of uuid over auto incrementation. On 1/20/2011 1:36 PM, Michael Dykman wrote: It is axiomatic in the relational model that a primary must be unique. This is not a quirk put forth by your current employer. Neither MySQL nor any other RDBMS will allow you to establish a primary key that is not unique. - michael dykman On Thu, Jan 20, 2011 at 1:32 PM, Anthony Paceanthony.p...@utoronto.ca wrote: Due to certain reasons, the company I am doing business with has decided that the primary key, for an orders table, be a unique key; however, I don't like the possibility of it conflicting if moved to another machine. What are some pitfalls of using a unique key, that is generated by a server side script, rather than by mysql? What are the best ways to do this? Please keep in mind this variable will also be displayed on the customer's Receipt, but again, since it's random, it doesn't have to mean anything. -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/mysql?unsub=mdyk...@gmail.com -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/mysql?unsub=arch...@jab.org
Re: best way to have a unique key
I know of uuid() my problem is that there can be conflicts when copying the DB to a different machine, or working with sections of the db on different machines for load balancing. On 1/20/2011 1:44 PM, Krishna Chandra Prajapati wrote: Please keep in mind this variable will also be displayed on the customer's Receipt, but again, since it's random, it doesn't have to mean anything. -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/mysql?unsub=arch...@jab.org
Re: best way to have a unique key
Although I did berate you for your obvious cheek, I will of course complement the acuteness of your response. On 1/20/2011 2:10 PM, Anthony Pace wrote: Dude, come on. I know that all primary keys have to be unique; however, I was obviously referring to the use of uuid over auto incrementation. On 1/20/2011 1:36 PM, Michael Dykman wrote: It is axiomatic in the relational model that a primary must be unique. This is not a quirk put forth by your current employer. Neither MySQL nor any other RDBMS will allow you to establish a primary key that is not unique. - michael dykman On Thu, Jan 20, 2011 at 1:32 PM, Anthony Paceanthony.p...@utoronto.ca wrote: Due to certain reasons, the company I am doing business with has decided that the primary key, for an orders table, be a unique key; however, I don't like the possibility of it conflicting if moved to another machine. What are some pitfalls of using a unique key, that is generated by a server side script, rather than by mysql? What are the best ways to do this? Please keep in mind this variable will also be displayed on the customer's Receipt, but again, since it's random, it doesn't have to mean anything. -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/mysql?unsub=mdyk...@gmail.com -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/mysql?unsub=arch...@jab.org
