alamb commented on code in PR #17189:
URL: https://github.com/apache/datafusion/pull/17189#discussion_r2367511032
##########
datafusion/common/src/dfschema.rs:
##########
@@ -899,6 +899,7 @@ impl TryFrom<SchemaRef> for DFSchema {
field_qualifiers: vec![None; field_count],
functional_dependencies: FunctionalDependencies::empty(),
};
+ dfschema.check_names()?;
Review Comment:
FWIW it seems this has caused a regression for some users in 50.0.0 (there
are some code paths that violate an invariant). See
https://github.com/apache/datafusion/pull/17706
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