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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