rluvaton commented on code in PR #18183:
URL: https://github.com/apache/datafusion/pull/18183#discussion_r2555774427
##########
datafusion/physical-expr/src/expressions/case.rs:
##########
@@ -1370,6 +1445,26 @@ impl PhysicalExpr for CaseExpr {
}
EvalMethod::ScalarOrScalar => self.scalar_or_scalar(batch),
EvalMethod::ExpressionOrExpression(p) => self.expr_or_expr(batch,
p),
+ EvalMethod::WithExprScalarLookupTable {
+ lookup_table,
+ fallback_for_datatype_mismatch,
+ } => {
+ // Currently, the lookup table does not support different data
types between
+ // the <expr> and the "when" values. If that is the case, use
that eval method
+ // as a fallback instead
+ if &self
+ .body
+ .expr
+ .as_ref()
+ .unwrap()
+ .data_type(batch.schema_ref())?
+ == lookup_table.when_data_type()
+ {
+ self.with_lookup_table(batch, lookup_table)
+ } else {
+ self.case_when_with_expr(batch,
fallback_for_datatype_mismatch)
+ }
Review Comment:
this is outdated as we now support it, so resolving this
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