alamb commented on code in PR #5998:
URL: https://github.com/apache/arrow-datafusion/pull/5998#discussion_r1167046028
##########
datafusion/expr/src/logical_plan/plan.rs:
##########
@@ -2330,4 +2335,22 @@ mod tests {
assert_eq!(1, schemas.len());
assert_eq!(0, schemas[0].fields().len());
}
+
+ #[test]
+ fn test_replace_invalid_placeholder_empty() {
+ let schema = Schema::new(vec![Field::new("id", DataType::Int32,
false)]);
+
+ let plan = table_scan(TableReference::none(), &schema, None)
+ .unwrap()
+ .filter(col("id").eq(Expr::Placeholder {
+ id: "".into(),
Review Comment:
https://github.com/apache/arrow-datafusion/issues/5856 also reports an issue
if `"$0"` is provided in addition to `""`. Can you please add a test for that
as well?
##########
datafusion/expr/src/logical_plan/plan.rs:
##########
@@ -605,6 +605,11 @@ impl LogicalPlan {
expr.transform(&|expr| {
match &expr {
Expr::Placeholder { id, data_type } => {
+ if id.is_empty() {
+ return Err(DataFusionError::Internal(
Review Comment:
What do you think about making this a `DataFusion::Plan` error rather than
`Internal` -- it seems to me this isn't a bug in datafusion (which is what
`Internal` represents) but rather a bug in the code that called DataFusion.
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