zhuqi-lucas commented on code in PR #14922:
URL: https://github.com/apache/datafusion/pull/14922#discussion_r1983006435
##########
datafusion/sqllogictest/test_files/expr.slt:
##########
@@ -478,10 +478,16 @@ a
statement ok
create table foo (a varchar, b varchar) as values ('a', 'b');
-query T
+query error
SELECT concat_ws('',a,b,'c') from foo
----
-abc
+DataFusion error: Optimizer rule 'optimize_projections' failed
+caused by
+Check optimizer-specific invariants after optimizer rule: optimize_projections
+caused by
+Internal error: Failed due to a difference in schemas, original schema:
DFSchema { inner: Schema { fields: [Field { name:
"concat_ws(Utf8(\"\"),foo.a,foo.b,Utf8(\"c\"))", data_type: Utf8, nullable:
true, dict_id: 0, dict_is_ordered: false, metadata: {} }], metadata: {} },
field_qualifiers: [None], functional_dependencies: FunctionalDependencies {
deps: [] } }, new schema: DFSchema { inner: Schema { fields: [Field { name:
"concat_ws(Utf8(\"\"),foo.a,foo.b,Utf8(\"c\"))", data_type: Utf8View, nullable:
true, dict_id: 0, dict_is_ordered: false, metadata: {} }], metadata: {} },
field_qualifiers: [None], functional_dependencies: FunctionalDependencies {
deps: [] } }.
+This was likely caused by a bug in DataFusion's code and we would welcome that
you file an bug report in our issue tracker
Review Comment:
Looks like concat_ws with different datatype which can't support after this
PR.
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