mysql:research@dbstore1003.eqiad.wmnet [rowiki]> select count(*) from user_properties where up_property="growthexperiments-mentor-id";
+----------+
| count(*) |
+----------+
|       10 |
+----------+
1 row in set (0.001 sec)

mysql:research@dbstore1003.eqiad.wmnet [rowiki]>