FWIW, doesn't seem to be much different when I do all of them
Code:
MariaDB [static]> select cpid,nick,count(*) as mycount from boinc_user where truncate(metric1,0) in (1000,10000,25000,50000,100000,250000,500000,750000,1000000,2500000,5000000,10000000,25000000,50000000,100000000,250000000,500000000,1000000000) group by cpid order by mycount desc limit 0,10;
ERROR 2006 (HY000): MySQL server has gone away
No connection. Trying to reconnect...
Connection id: 170374
Current database: static
+----------------------------------+-----------+---------+
| cpid | nick | mycount |
+----------------------------------+-----------+---------+
| 0dd9749ec16c8900f065d871290156bc | BAR | 7 |
| 2286c5351f0f2d2f5d7fee45967f22b8 | Baryna.ch | 5 |
| 8f15950e07e24a5c0c73016a77c952e9 | Nflight | 4 |
| e33013c782482e80caf0c65b476a2d87 | JayPi | 4 |
| 89e772f65716bba7c962b4a13d14e350 | AMDave | 4 |
| 61c4eaaca6667bc9dda3412188c5f173 | x3mEn | 3 |
| 476d777382a3555be83f6af9ab59c9f9 | Szopler | 3 |
| 8496797f94775aac42635504add88c62 | $ | 3 |
| d7a3d9afaf379c6984d47f1d9672f5e2 | UL1 | 3 |
| 99fecfdc6caaa3ee9f7365297dd65634 | williami | 3 |
+----------------------------------+-----------+---------+
10 rows in set (10.022 sec)