xuzifu666 commented on code in PR #4679:
URL: https://github.com/apache/calcite/pull/4679#discussion_r2613665578
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testkit/src/main/java/org/apache/calcite/test/SqlOperatorTest.java:
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@@ -825,6 +825,18 @@ void testCastToExactNumeric(CastType castType,
SqlOperatorFixture f) {
f.checkNull("CAST(CAST(NULL AS VARCHAR) AS VARBINARY)");
}
+ /**
+ * Test case for <a
href="https://issues.apache.org/jira/browse/CALCITE-7323";>
+ * Result of cast Number to Boolean is not correct</a>. */
+ @Test public void testNumbericBooleanCast() {
+ SqlOperatorFixture f = fixture();
+ f.checkScalar("CAST(1 AS BOOLEAN)", "true", "BOOLEAN NOT NULL");
+ f.checkScalar("CAST(2 AS BOOLEAN)", "true", "BOOLEAN NOT NULL");
+ f.checkScalar("CAST(0 AS BOOLEAN)", "false", "BOOLEAN NOT NULL");
+ f.checkScalar("CAST(1.2 AS BOOLEAN)", "true", "BOOLEAN NOT NULL");
Review Comment:
I added some test cases related to ```NULL``` and ```Double```, and the
results should be as expected.
I added the variable type to ```RelToSqlConverterTest``` (which will convert
it to var <>0), but I don't seem to fully understand the test way for
```-0e0```.
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