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    <p><em>What was my average, highest and lowest score?</em></p> <p><strong>Scenario 1.</strong></p> <pre><code>select (h1+h2+h3+h4+h5+h6+h7+h8+h9+h10+h11+h13+h14+h15+h16+h17+h18) / 18 as avg_score ,greatest(h1,h2,h3,h4,h5,h6,h7,h8,h9,h10,h11,h12,h13,h14,h16,h17,h18) as highest ,least(h1,h2,h3,h4,h5,h6,h8,h8,h9,h10,h11,h12,h13,h14,h16,h17,h18) as lowest from scores where player_id = 1; </code></pre> <p>vs.</p> <pre><code>select avg(score) as avg_score ,max(score) as highest ,min(score) as lowest from scores where player_id = 1; </code></pre> <p><em>Which hole was my worst?</em></p> <p><strong>Scenario 2.</strong></p> <pre><code>select case when h1 = greatest(h1,h2,h3,h4,h5,h6,h8,h8,h9,h10,h11,h12,h13,h14,h16,h17,h18) then 'H1' when h2 = greatest(h1,h2,h3,h4,h5,h6,h8,h8,h9,h10,h11,h12,h13,h14,h16,h17,h18) then 'H2' when h3 = greatest(h1,h2,h3,h4,h5,h6,h8,h8,h9,h10,h11,h12,h13,h14,h16,h17,h18) then 'H3' when h4 = greatest(h1,h2,h3,h4,h5,h6,h8,h8,h9,h10,h11,h12,h13,h14,h16,h17,h18) then 'H4' when h5 = greatest(h1,h2,h3,h4,h5,h6,h8,h8,h9,h10,h11,h12,h13,h14,h16,h17,h18) then 'H5' when h6 = greatest(h1,h2,h3,h4,h5,h6,h8,h8,h9,h10,h11,h12,h13,h14,h16,h17,h18) then 'H6' when h7 = greatest(h1,h2,h3,h4,h5,h6,h8,h8,h9,h10,h11,h12,h13,h14,h16,h17,h18) then 'H7' when h8 = greatest(h1,h2,h3,h4,h5,h6,h8,h8,h9,h10,h11,h12,h13,h14,h16,h17,h18) then 'H8' when h9 = greatest(h1,h2,h3,h4,h5,h6,h8,h8,h9,h10,h11,h12,h13,h14,h16,h17,h18) then 'H9' when h10 = greatest(h1,h2,h3,h4,h5,h6,h8,h8,h9,h10,h11,h12,h13,h14,h16,h17,h18) then 'H10' when h11 = greatest(h1,h2,h3,h4,h5,h6,h8,h8,h9,h10,h11,h12,h13,h14,h16,h17,h18) then 'H11' when h12 = greatest(h1,h2,h3,h4,h5,h6,h8,h8,h9,h10,h11,h12,h13,h14,h16,h17,h18) then 'H12' when h13 = greatest(h1,h2,h3,h4,h5,h6,h8,h8,h9,h10,h11,h12,h13,h14,h16,h17,h18) then 'H13' when h14 = greatest(h1,h2,h3,h4,h5,h6,h8,h8,h9,h10,h11,h12,h13,h14,h16,h17,h18) then 'H14' when h15 = greatest(h1,h2,h3,h4,h5,h6,h8,h8,h9,h10,h11,h12,h13,h14,h16,h17,h18) then 'H15' when h16 = greatest(h1,h2,h3,h4,h5,h6,h8,h8,h9,h10,h11,h12,h13,h14,h16,h17,h18) then 'H16' when h17 = greatest(h1,h2,h3,h4,h5,h6,h8,h8,h9,h10,h11,h12,h13,h14,h16,h17,h18) then 'H17' when h18 = greatest(h1,h2,h3,h4,h5,h6,h8,h8,h9,h10,h11,h12,h13,h14,h16,h17,h18) then 'H18' end as hole_highest_score from scores where player_id = 1; </code></pre> <p>vs.</p> <pre><code>select hole, score from scores s1 where player_id = 1 and score = (select max(score) from scores s2 where s2.player_id = s1.player_id) </code></pre> <p>I would go with scenario 2 any day :)</p>
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