LakshSingla commented on code in PR #16322:
URL: https://github.com/apache/druid/pull/16322#discussion_r1595326542
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sql/src/test/java/org/apache/druid/sql/calcite/CalciteNestedDataQueryTest.java:
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@@ -7072,6 +7090,8 @@ public void testUnnestJsonQueryArraysJsonValueSum()
@Test
public void testJsonValueNestedEmptyArray()
{
+ // Returns incorrect results with MSQ
+ msqIncompatible();
Review Comment:
The data set has empty arrays, however it returns nulls. The root cause of
the issue is the incorrect capabilities returned by `NestedFieldVirtualColumn`
when planning which causes MSQ to treat the nested path as STRING, even though
its an array.
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