danny0405 commented on a change in pull request #1811: [CALCITE-3789] Support
validation of UNNEST multiple array columns like Presto
URL: https://github.com/apache/calcite/pull/1811#discussion_r390741619
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File path: core/src/test/java/org/apache/calcite/test/SqlValidatorTest.java
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@@ -7540,6 +7540,42 @@ public void _testGroupExpressionEquivalenceParams() {
.fails("Column 'C1' not found in any table");
}
+ /**
+ * Test case for
+ * <a
href="https://issues.apache.org/jira/browse/CALCITE-3789";>[CALCITE-3789]
+ * Support validation of UNNEST multiple array columns like Presto</a>.
+ */
+ @Test public void testAliasUnnestMultipleArrays() {
+ sql("select A, varType "
+ + "from COMPLEXTYPES.CTC_T1 "
+ + "CROSS JOIN UNNEST(varchar5ArrayType) as t(varType)")
+ .withExtendedCatalog()
+ .withCaseSensitive(false)
+ .withConformance(SqlConformanceEnum.PRESTO).ok();
+ sql("select A, varType, intType "
+ + "from COMPLEXTYPES.CTC_T1 "
+ + "CROSS JOIN UNNEST(varchar5ArrayType, intArrayType) as t(varType,
intType)")
+ .withExtendedCatalog()
+ .withCaseSensitive(false)
+ .withConformance(SqlConformanceEnum.PRESTO).ok();
+ sql("select e.ENAME\n"
+ + "from dept_nested as d CROSS JOIN\n"
+ + " UNNEST(d.employees) as t(e)")
+ .withConformance(SqlConformanceEnum.PRESTO).columnType("VARCHAR(10) NOT
NULL");
+ sql("select d.deptno, e.detail, k.empno\n"
+ + "from dept_nested as d CROSS JOIN\n"
+ + " UNNEST(d.employees, d.employees) as t(e, k)")
Review comment:
You should add a new nested `StructKind.PEEK_FIELDS` type and write test
with that.
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