I am working with putting syslog logs into a database, I'm parsing the
logs and using the key information for my fields. With my test data of
~200K rows the optimizer used my b-tree index that I created for an
oft-used where clause. When the table grew to over 800K rows the index
was no longer used. The field in question contains IP addresses, but
uses varchar. The values are _not_ unique. One particular address has
150K entries. How can I keep my where queries speedy?
-ryan