Add debug print statement for planning errors in coerce_case_expression

kosiew · Jan 20, 2025 · 440a9c0 · 440a9c0
1 parent 522459e
commit 440a9c0
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/datafusion/optimizer/src/analyzer/type_coercion.rs b/datafusion/optimizer/src/analyzer/type_coercion.rs
@@ -865,6 +865,7 @@ fn coerce_case_expression(case: Case, schema: &DFSchema) -> Result<Case> {
     let then_else_coerce_type =
         get_coerce_type_for_case_expression(&then_types, else_type.as_ref()).ok_or_else(
             || {
+                println!("==> planning error");
                 plan_datafusion_err!(
                     "Failed to coerce then ({then_types:?}) and else ({else_type:?}) \
                      to common types in CASE WHEN expression"