Report offending plan node when In/Exist subquery misused (#13155)

Author: findepi

datafusion/optimizer/src/analyzer/subquery.rs

@@ -113,7 +113,9 @@ pub fn check_subquery_expr(
             | LogicalPlan::Join(_) => Ok(()),
             _ => plan_err!(
                 "In/Exist subquery can only be used in \
-            Projection, Filter, Window functions, Aggregate and Join plan nodes"
+                Projection, Filter, Window functions, Aggregate and Join plan nodes, \
+                but was used in [{}]",
+                outer_plan.display()
             ),
         }?;
         check_correlations_in_subquery(inner_plan)

datafusion/sqllogictest/test_files/subquery.slt

@@ -438,7 +438,7 @@ SELECT t1_id, t1_name, t1_int, (select t2_id, t2_name FROM t2 WHERE t2.t2_id = t
 
 #subquery_not_allowed
 #In/Exist Subquery is not allowed in ORDER BY clause.
-statement error DataFusion error: check_analyzed_plan\ncaused by\nError during planning: In/Exist subquery can only be used in Projection, Filter, Window functions, Aggregate and Join plan nodes
+statement error DataFusion error: check_analyzed_plan\ncaused by\nError during planning: In/Exist subquery can only be used in Projection, Filter, Window functions, Aggregate and Join plan nodes, but was used in \[Sort: t1.t1_int IN \(<subquery>\) ASC NULLS LAST\]
 SELECT t1_id, t1_name, t1_int FROM t1 order by t1_int in (SELECT t2_int FROM t2 WHERE t1.t1_id > t1.t1_int)
 
 #non_aggregated_correlated_scalar_subquery