On Tue 18 May 02004 at 02:48:45PM -0500, Victor Pendleton wrote: > In this case creating separate columns and making the values integers as > oppesed to varchar will increase your query speed.
Okay, I'll give that a try. How do I set up my column types so that a leading 0 won't be stripped off? > > -----Original Message----- > From: Jacob Elder > To: Victor Pendleton > Cc: '[EMAIL PROTECTED] '; ''[EMAIL PROTECTED] ' ' > Sent: 5/18/04 2:11 PM > Subject: Re: Simple table, 1.7 million rows, very slow SELECTs > > On Tue 18 May 02004 at 02:03:55PM -0500, Victor Pendleton wrote: > > From this explain plan it appears a full table scan will be done. What > is > > the cardinality of this index? > > > > Actually, they are phone numbers. I wasn't sure how this list would feel > about this but I am wring a National Do-Not-Call Registry complaince > tool > for internal use at my company. We are a real estate agency, not > telemarketers. We don't make a ton of cold calls but we don't want to > get > sued either. > > My table contains all do-not-call entries in Massachusetts. They are > inserted in numeric order. Would it be faster if I broke it into columns > for > area code, exchange, and subscriber? > > -- > Jacob Elder > > -- > MySQL General Mailing List > For list archives: http://lists.mysql.com/mysql > To unsubscribe: http://lists.mysql.com/[EMAIL PROTECTED] > -- Jacob Elder -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe: http://lists.mysql.com/[EMAIL PROTECTED]
