xiedeyantu commented on code in PR #4389:
URL: https://github.com/apache/calcite/pull/4389#discussion_r2097169361
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core/src/test/java/org/apache/calcite/test/SqlValidatorTest.java:
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@@ -5238,6 +5238,35 @@ private ImmutableList<ImmutableBitSet>
cube(ImmutableBitSet... sets) {
.fails("Type mismatch in column 1 of UNION");
sql("select ^slacker^ from emp union select name from dept").ok();
+
+ sql("select ^name^ from dept union select name from dept union select
slacker from emp")
+ .withTypeCoercion(false)
+ .fails("Type mismatch in column 1 of UNION");
Review Comment:
Will the newly added case containing two unions have different behavior for
this PR than the original case containing only one union? Do we need to add two
additional union cases?
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