logging in binary expression

Author: matthewgapp

datafusion/physical-expr/src/expressions/binary.rs

@@ -38,6 +38,7 @@ use arrow::compute::kernels::comparison::regexp_is_match_utf8_scalar;
 use arrow::compute::kernels::concat_elements::concat_elements_utf8;
 use arrow::datatypes::*;
 use arrow::record_batch::RecordBatch;
+use arrow::util::pretty::print_batches;
 use arrow_array::Datum;
 use datafusion_common::cast::as_boolean_array;
 use datafusion_common::{internal_err, DataFusionError, Result, ScalarValue};
@@ -293,10 +294,12 @@ impl PhysicalExpr for BinaryExpr {
         let input_schema = schema.as_ref();
 
         println!(
-            "evaluate binary on batch {:?} left {:?}, right {:?}",
-            batch, left_value, right_value
+            "evaluate binary on batch left {:?}, right {:?}, operator {:?}",
+            left_value, right_value, self.op
         );
 
+        print_batches(&[batch.clone()]).unwrap();
+
         if self.is_datum_operator() {
             return match (&left_value, &right_value) {
                 (ColumnarValue::Array(left), ColumnarValue::Array(right)) => {