desc SELECT '20070517' as date, CASE WHEN msc='huaw' then 'huawei' else msc END AS msc, COUNT(DISTINCT CASE WHEN qt_moc>0 OR qt_mtc>0 or qt_cfw_no_vms > 0 THEN servedmsisdn END), COUNT(DISTINCT CASE WHEN qt_mocSMS>0 OR qt_mtcSMS> 0 THEN servedmsisdn END), COUNT(DISTINCT CASE WHEN qt_moc>0 OR qt_mtc>0 OR qt_cfw_no_vms > 0 OR qt_mocSMS>0 OR qt_mtcSMS>0 THEN servedmsisdn END) FROM top_moc as t WHERE date between '2007-04-17' and '2007-05-17' GROUP BY 1,2\G *************************** 1. row *************************** id: 1 select_type: SIMPLE table: t type: ALL possible_keys: ix_top_moc_date,ix_top_moc_datemsisdn key: NULL key_len: NULL ref: NULL rows: 101931964 Extra: Using where; Using filesort