xuzifu666 commented on code in PR #4371:
URL: https://github.com/apache/calcite/pull/4371#discussion_r2086664763
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core/src/test/java/org/apache/calcite/test/RelOptRulesTest.java:
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@@ -354,6 +354,32 @@ private static boolean skipItem(RexNode expr) {
.check();
}
+ /** Test case for
+ * <a
href="https://issues.apache.org/jira/browse/CALCITE-6887";>[CALCITE-6887]
+ * ReduceExpressionsRule applied to 'IN subquery' should make the values
distinct
+ * if the subquery is a constant Values</a>. */
+ @Test void testReduceInValues() {
+ final String sql = "SELECT deptno, sal "
+ + "FROM EMP "
+ + "WHERE deptno IN (1,1,3,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1)";
Review Comment:
Thanks for reminder, here with many ending 1s is due to greater than 20
would construcor with IN operator (otherwise would not), and I would add more
tests according your suggestion. @asolimando
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