> PRIMARY KEY (`FIELD_1`), > KEY `FIELD_1` (`FIELD_1`), You don't need a second key on the column, as it is a duplicate of the primary key.
> but, i do query sintax, just simple .... select count(*) from TABLE_1 where > FIELD_1 = "XXX_CC"; > But i got the result very long time....more 10 minutes It is likely that your index is not very unique. Ten million rows is quite a lot of data. How much of that is unique? If all of your rows are the same size, then you might try making all of the columns a fixed size, instead of variable, as that should improve the speed. If many columns have the same value, then you will have to use a different form of indexing. Only index the part that is unique. > I used Sun Solarys with 2 Gygabyte RAM. Since you have a lot of RAM, try using a larget key_buffer, table_cache, sort_buffer and record_buffer, as indicated by section 5.5.2 of the manual. --------------------------------------------------------------------- Before posting, please check: http://www.mysql.com/manual.php (the manual) http://lists.mysql.com/ (the list archive) To request this thread, e-mail <[EMAIL PROTECTED]> To unsubscribe, e-mail <[EMAIL PROTECTED]> Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php
