[GitHub] [calcite] chunweilei commented on a diff in pull request #2803: [CALCITE-5130] AssertionError: "Conversion to relational algebra failed to preserve datatypes" when union VARCHAR literal and CAST(null AS INTEGER)

Wed, 18 May 2022 19:56:35 -0700 


chunweilei commented on code in PR #2803:
URL: https://github.com/apache/calcite/pull/2803#discussion_r876543812


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core/src/test/java/org/apache/calcite/test/TypeCoercionTest.java:
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@@ -216,7 +216,7 @@ private static ImmutableList<RelDataType> combine(
     sql("select '1' from (values(true)) union values 2")
         .type("RecordType(VARCHAR NOT NULL EXPR$0) NOT NULL");
     sql("select (select 1+2 from (values true)) tt from (values(true)) union 
values '2'")
-        .type("RecordType(VARCHAR NOT NULL TT) NOT NULL");
+        .type("RecordType(VARCHAR TT) NOT NULL");
     // union with star

Review Comment:
   Is this change expected?



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