SELECT g.id, g.job, g.score FROM( SELECT *, AVG(score) OVER(PARTITION BY job ) avg FROM grade ) g WHERE g.score > g.avg ORDER BY g.id; SELECT g.id, g.job, g.score FROM grade g WHERE g.score > ( SELECT AVG(score) FROM grade gd WHERE g.job = gd.job GROUP BY job ) ORDER BY g.id; SELECT g.id, g.jo...