vlsi commented on a change in pull request #2613:
URL: https://github.com/apache/calcite/pull/2613#discussion_r764752425
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File path: core/src/test/java/org/apache/calcite/test/RelMetadataTest.java
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@@ -2482,6 +2482,41 @@ private void checkPredicates(RelOptCluster cluster,
RelOptTable empTable,
assertThat(inputRef1.getIdentifier(), is(inputRef2.getIdentifier()));
}
+ @Test void testExpressionLineageConjuntiveExpression() {
+ // empno is column 0 in catalog.sales.emp
+ // ename is column 1 in catalog.sales.emp
+ // deptno is column 7 in catalog.sales.emp
+ final RelNode rel = convertSql("select (empno = 1 or ename = 'abc') and
deptno > 1 from emp");
+ final RelMetadataQuery mq = rel.getCluster().getMetadataQuery();
+
+ final RexNode ref = RexInputRef.of(0, rel.getRowType().getFieldList());
+ final Set<RexNode> r = mq.getExpressionLineage(rel, ref);
+ assertThat(r.size(), is(1));
Review comment:
`Iterables.getOnlyElement` would be slightly better, however, I believe
it would not convey the reason for "only one element expected" (==input SQL
would be missing, etc, etc)
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