----------------------------------------------------------- New Message on BDOTNET
----------------------------------------------------------- From: SriSamp Message 8 in Discussion Assume that you have a table containing 50 columns out of which you want 10 columns for processing. The simplest (and most oft used) method is to say: SELECT * FROM table. It will work, but you are sending un-necessary data over the wire and this is a huge overhead. Also, SQL Server has to decode * to retrieve the column names which is an extra operation. Now, assume that you have written the statement as: SELECT col1, col2..., col10 FROM table. This not passes just the required data over the wire, but also protects you from future changes to the table. If col40 has undergone a change of datatype or has been dropped, your statement will still work and users will not suddenly see an unpected error from SQL Server, which will happen in the first case. HTH, Srinivas Sampath MVP - SQL Server http://www32.brinkster.com/srisamp ----------------------------------------------------------- To stop getting this e-mail, or change how often it arrives, go to your E-mail Settings. http://groups.msn.com/BDotNet/_emailsettings.msnw Need help? If you've forgotten your password, please go to Passport Member Services. http://groups.msn.com/_passportredir.msnw?ppmprop=help For other questions or feedback, go to our Contact Us page. http://groups.msn.com/contact If you do not want to receive future e-mail from this MSN group, or if you received this message by mistake, please click the "Remove" link below. On the pre-addressed e-mail message that opens, simply click "Send". Your e-mail address will be deleted from this group's mailing list. mailto:[EMAIL PROTECTED]
