Github user viirya commented on a diff in the pull request: https://github.com/apache/spark/pull/15388#discussion_r82718343 --- Diff: sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/expressions/ExpressionSetSuite.scala --- @@ -80,6 +80,65 @@ class ExpressionSetSuite extends SparkFunSuite { setTest(1, Not(aUpper >= 1), aUpper < 1, Not(Literal(1) <= aUpper), Literal(1) > aUpper) setTest(1, Not(aUpper <= 1), aUpper > 1, Not(Literal(1) >= aUpper), Literal(1) < aUpper) + // Reordering AND/OR expressions + setTest(1, aUpper > bUpper && aUpper <= 10, aUpper <= 10 && aUpper > bUpper) + setTest(1, + aUpper > bUpper && bUpper > 100 && aUpper <= 10, + bUpper > 100 && aUpper <= 10 && aUpper > bUpper) + + setTest(1, aUpper > bUpper || aUpper <= 10, aUpper <= 10 || aUpper > bUpper) + setTest(1, + aUpper > bUpper || bUpper > 100 || aUpper <= 10, + bUpper > 100 || aUpper <= 10 || aUpper > bUpper) + + setTest(1, + (aUpper <= 10 && aUpper > bUpper) || bUpper > 100, + bUpper > 100 || (aUpper <= 10 && aUpper > bUpper)) + + setTest(1, + aUpper >= bUpper || (aUpper > 10 && bUpper < 10), + (bUpper < 10 && aUpper > 10) || aUpper >= bUpper) + + // More complicated cases mixing AND/OR + // Three predicates in the following: + // (bUpper > 100) + // (aUpper < 100 && bUpper <= aUpper) + // (aUpper >= 10 && bUpper >= 50) + // They can be reordered and the sub-predicates contained in each of them can be reordered too. + setTest(1, + (bUpper > 100) || (aUpper < 100 && bUpper <= aUpper) || (aUpper >= 10 && bUpper >= 50), + (aUpper >= 10 && bUpper >= 50) || (bUpper > 100) || (aUpper < 100 && bUpper <= aUpper), + (bUpper >= 50 && aUpper >= 10) || (bUpper <= aUpper && aUpper < 100) || (bUpper > 100)) + + // Two predicates in the following: + // (bUpper > 100 && aUpper < 100 && bUpper <= aUpper) + // (aUpper >= 10 && bUpper >= 50) + setTest(1, + (bUpper > 100 && aUpper < 100 && bUpper <= aUpper) || (aUpper >= 10 && bUpper >= 50), + (aUpper >= 10 && bUpper >= 50) || (aUpper < 100 && bUpper > 100 && bUpper <= aUpper), + (bUpper >= 50 && aUpper >= 10) || (bUpper <= aUpper && aUpper < 100 && bUpper > 100)) + + // Three predicates in the following: + // (aUpper >= 10) + // (bUpper <= 10 && aUpper === bUpper && aUpper < 100) + // (bUpper >= 100) + setTest(1, + (aUpper >= 10) || (bUpper <= 10 && aUpper === bUpper && aUpper < 100) || (bUpper >= 100), + (aUpper === bUpper && aUpper < 100 && bUpper <= 10) || (bUpper >= 100) || (aUpper >= 10), + (aUpper < 100 && bUpper <= 10 && aUpper === bUpper) || (aUpper >= 10) || (bUpper >= 100), + ((bUpper <= 10 && aUpper === bUpper) && aUpper < 100) || ((aUpper >= 10) || (bUpper >= 100))) + + // Don't reorder non-deterministic expression in AND/OR. + setTest(2, Rand(1L) > aUpper && aUpper <= 10, aUpper <= 10 && Rand(1L) > aUpper) + setTest(2, + aUpper > bUpper && bUpper > 100 && Rand(1L) > aUpper, + bUpper > 100 && Rand(1L) > aUpper && aUpper > bUpper) + + setTest(2, Rand(1L) > aUpper || aUpper <= 10, aUpper <= 10 || Rand(1L) > aUpper) --- End diff -- Good to have. Added.
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