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2012-06-23T17:04:47.667
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<p>Choose your favourite version:</p> <p><a href="http://sqlfiddle.com/#!5/6169b/9" rel="noreferrer">http://sqlfiddle.com/#!5/6169b/9</a></p> <h2>using temporary table</h2> <pre><code>CREATE TEMPORARY TABLE pair (a INTEGER, b INTEGER); INSERT INTO pair (a, b) VALUES (1, 1); INSERT INTO pair (a, b) VALUES (2, 2); .... </code></pre> <p>data IN pairs; if pair(a,b) is not unique</p> <pre><code>SELECT * FROM data WHERE EXISTS ( SELECT NULL FROM pair WHERE pair.a = data.a AND pair.b = data.b ); </code></pre> <p>data IN pairs; if pair(a,b) is unique</p> <pre><code>SELECT data.* FROM data INNER JOIN pair ON pair.a = data.a AND pair.b = data.b; </code></pre> <p>data NOT IN pairs; if pair(a,b) is unique</p> <pre><code>SELECT data.* FROM data LEFT JOIN pair ON pair.a = data.a AND pair.b = data.b WHERE pair.a IS NULL OR pair.b IS NULL; </code></pre> <h2>using inline table</h2> <p>data IN pairs; if pair(a,b) is not unique</p> <pre><code>SELECT * FROM data WHERE EXISTS ( SELECT NULL FROM ( SELECT 1 AS a, 1 AS b UNION ALL SELECT 2 AS a, 2 AS b UNION ALL SELECT 3 AS a, 3 AS b ) AS pair WHERE pair.a = data.a AND pair.b = data.b ); </code></pre> <p>data IN pairs; if pair(a,b) is unique</p> <pre><code>SELECT data.* FROM data INNER JOIN ( SELECT 1 AS a, 1 AS b UNION ALL SELECT 2 AS a, 2 AS b UNION ALL SELECT 3 AS a, 3 AS b ) AS pair ON pair.a = data.a AND pair.b = data.b; </code></pre> <p>data NOT IN pairs; if pair(a,b) is unique</p> <pre><code>SELECT data.* FROM data LEFT JOIN ( SELECT 1 AS a, 1 AS b UNION ALL SELECT 2 AS a, 2 AS b UNION ALL SELECT 3 AS a, 3 AS b ) AS pair ON pair.a = data.a AND pair.b = data.b WHERE pair.a IS NULL OR pair.b IS NULL; </code></pre>
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1. POHow can I rewrite a multi-column IN clause to work on SQLite?
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