JiajunBernoulli commented on code in PR #3501:
URL: https://github.com/apache/calcite/pull/3501#discussion_r1382710583
##########
testkit/src/main/java/org/apache/calcite/test/SqlOperatorTest.java:
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@@ -10497,6 +10497,29 @@ private static void
checkArrayConcatAggFuncFails(SqlOperatorFixture t) {
"[1 , 2 , Hi , null]", "CHAR(10) ARRAY NOT
NULL");
}
+ /**
+ * Test case for
+ * <a
href="https://issues.apache.org/jira/browse/CALCITE-6091";>[CALCITE-6091]
+ * Char that in array or map is truncated if CASE WHEN statement contains
null</a>.
+ */
+ @Test void testTruncatedCharInCaseWhen() {
+ final SqlOperatorFixture fixture = fixture().withLibrary(SqlLibrary.SPARK);
+ fixture.check("select case "
+ + "when true then array('abc') "
+ + "when false then array('d') "
+ + "else null "
Review Comment:
@mihaibudiu
Here is null value.
> When we omit `else`, it is also null.
If I remove my fix, the test will failed.
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