hits_10m_single hits_100m_single 8000 7000 20000 SELECT count() FROM hits_100m_single WHERE UserID IN (SELECT UserID FROM hits_100m_single WHERE AdvEngineID != 0) SELECT count() FROM hits_10m_single WHERE UserID IN (SELECT UserID FROM hits_10m_single) SELECT count() FROM hits_10m_single WHERE SearchPhrase IN (SELECT SearchPhrase FROM hits_10m_single) SELECT count() FROM hits_10m_single WHERE URL IN (SELECT URL FROM hits_10m_single WHERE AdvEngineID != 0) SELECT count() FROM hits_10m_single WHERE URL IN (SELECT URL FROM hits_10m_single WHERE SearchEngineID != 0) SELECT count() FROM hits_10m_single WHERE RegionID IN (SELECT RegionID FROM hits_10m_single)