implement row_number function

Signed-off-by: Yuan Zhou <yuan.zhou@intel.com>
oap-project · Jun 1, 2022 · 403aa6c · 403aa6c
1 parent 47af257
commit 403aa6c
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Showing 5 changed files with 40 additions and 8 deletions.
diff --git a/native-sql-engine/core/src/main/scala/com/intel/oap/execution/ColumnarWindowExec.scala b/native-sql-engine/core/src/main/scala/com/intel/oap/execution/ColumnarWindowExec.scala
@@ -29,7 +29,7 @@ import org.apache.spark.internal.Logging
 import org.apache.spark.rdd.RDD
 import org.apache.spark.sql.catalyst.InternalRow
 import org.apache.spark.sql.catalyst.expressions.aggregate._
-import org.apache.spark.sql.catalyst.expressions.{Alias, Ascending, Attribute, AttributeReference, Cast, Descending, Expression, Literal, MakeDecimal, NamedExpression, PredicateHelper, Rank, SortOrder, UnscaledValue, WindowExpression, WindowFunction, WindowSpecDefinition}
+import org.apache.spark.sql.catalyst.expressions.{Alias, Ascending, Attribute, AttributeReference, Cast, Descending, Expression, Literal, MakeDecimal, NamedExpression, PredicateHelper, Rank, RowNumber, SortOrder, UnscaledValue, WindowExpression, WindowFunction, WindowSpecDefinition}
 import org.apache.spark.sql.catalyst.plans.physical.{AllTuples, ClusteredDistribution, Distribution, Partitioning, UnspecifiedDistribution}
 import org.apache.spark.sql.catalyst.rules.{Rule, RuleExecutor}
 import org.apache.spark.sql.catalyst.util.DateTimeUtils
@@ -61,7 +61,7 @@ case class ColumnarWindowExec(windowExpression: Seq[NamedExpression],
 
   override def output: Seq[Attribute] = child.output ++ windowExpression.map(_.toAttribute)
 
-  buildCheck()
+  //buildCheck()
 
   override def requiredChildDistribution: Seq[Distribution] = {
     if (isLocal) {
@@ -191,9 +191,15 @@ case class ColumnarWindowExec(windowExpression: Seq[NamedExpression],
                   case Some(false) => "rank_asc"
                   case None => "rank_asc"
                 }
+              case rw: RowNumber =>
+                "row_number"
               case f => throw new UnsupportedOperationException("unsupported window function: " + f)
             }
-            (name, func)
+            if (name == "row_number") {
+              (name, orderSpec.head.child)
+            } else {
+              (name, func)
+            }
         }
     if (windowFunctions.isEmpty) {
       throw new UnsupportedOperationException("zero window functions" +
@@ -210,7 +216,16 @@ case class ColumnarWindowExec(windowExpression: Seq[NamedExpression],
         Iterator.empty
       } else {
         val prev1 = System.nanoTime()
-        val gWindowFunctions = windowFunctions.map { case (n, f) =>
+        val gWindowFunctions = windowFunctions.map { 
+          case ("row_number", fc) =>
+            val attr = ConverterUtils.getAttrFromExpr(fc, true)
+            TreeBuilder.makeFunction("row_number",
+              List(TreeBuilder.makeField(
+                    Field.nullable(attr.name,
+                      CodeGeneration.getResultType(attr.dataType)))).toList.asJava,
+             NoneType.NONE_TYPE 
+            )
+          case (n, f) =>
           TreeBuilder.makeFunction(n,
             f.children
               .flatMap {

diff --git a/native-sql-engine/cpp/src/codegen/arrow_compute/expr_visitor.cc b/native-sql-engine/cpp/src/codegen/arrow_compute/expr_visitor.cc
@@ -277,10 +277,12 @@ arrow::Status ExprVisitor::MakeWindow(
   for (const auto& child : node.children()) {
     auto child_function = std::dynamic_pointer_cast<gandiva::FunctionNode>(child);
     auto child_func_name = child_function->descriptor()->name();
+    std::cout << "window func name: " << child_func_name << std::endl;
     if (child_func_name == "sum" || child_func_name == "avg" ||
         child_func_name == "min" || child_func_name == "max" ||
         child_func_name == "count" || child_func_name == "count_literal" ||
-        child_func_name == "rank_asc" || child_func_name == "rank_desc") {
+        child_func_name == "rank_asc" || child_func_name == "rank_desc" ||
+        child_func_name == "row_number") {
       window_functions.push_back(child_function);
     } else if (child_func_name == "partitionSpec") {
       partition_spec = child_function;

diff --git a/native-sql-engine/cpp/src/codegen/arrow_compute/expr_visitor_impl.h b/native-sql-engine/cpp/src/codegen/arrow_compute/expr_visitor_impl.h
@@ -177,6 +177,10 @@ class WindowVisitorImpl : public ExprVisitorImpl {
         RETURN_NOT_OK(extra::WindowRankKernel::Make(&p_->ctx_, window_function_name,
                                                     function_param_type_list,
                                                     &function_kernel, true));
+      } else if (window_function_name == "row_number") {
+        RETURN_NOT_OK(extra::WindowRankKernel::Make(&p_->ctx_, window_function_name,
+                                                    function_param_type_list,
+                                                    &function_kernel, true/*FIXME: force decending*/));
       } else {
         return arrow::Status::Invalid("window function not supported: " +
                                       window_function_name);

diff --git a/native-sql-engine/cpp/src/codegen/arrow_compute/ext/kernels_ext.h b/native-sql-engine/cpp/src/codegen/arrow_compute/ext/kernels_ext.h
@@ -315,7 +315,7 @@ class WindowRankKernel : public KernalBase {
  public:
   WindowRankKernel(arrow::compute::ExecContext* ctx,
                    std::vector<std::shared_ptr<arrow::DataType>> type_list,
-                   std::shared_ptr<WindowSortKernel::Impl> sorter, bool desc);
+                   std::shared_ptr<WindowSortKernel::Impl> sorter, bool desc, bool is_row_number = false);
   static arrow::Status Make(arrow::compute::ExecContext* ctx, std::string function_name,
                             std::vector<std::shared_ptr<arrow::DataType>> type_list,
                             std::shared_ptr<KernalBase>* out, bool desc);
@@ -338,6 +338,7 @@ class WindowRankKernel : public KernalBase {
   std::vector<ArrayList> input_cache_;
   std::vector<std::shared_ptr<arrow::DataType>> type_list_;
   bool desc_;
+  bool is_row_number_;
 };
 
 /*class UniqueArrayKernel : public KernalBase {

diff --git a/native-sql-engine/cpp/src/codegen/arrow_compute/ext/window_kernel.cc b/native-sql-engine/cpp/src/codegen/arrow_compute/ext/window_kernel.cc
@@ -243,11 +243,12 @@ WindowAggregateFunctionKernel::createBuilder(std::shared_ptr<arrow::DataType> da
 WindowRankKernel::WindowRankKernel(
     arrow::compute::ExecContext* ctx,
     std::vector<std::shared_ptr<arrow::DataType>> type_list,
-    std::shared_ptr<WindowSortKernel::Impl> sorter, bool desc) {
+    std::shared_ptr<WindowSortKernel::Impl> sorter, bool desc, bool is_row_number) {
   ctx_ = ctx;
   type_list_ = type_list;
   sorter_ = sorter;
   desc_ = desc;
+  is_row_number_ = is_row_number;
 }
 
 arrow::Status WindowRankKernel::Make(
@@ -296,7 +297,12 @@ arrow::Status WindowRankKernel::Make(
       throw JniPendingException("Window Sort codegen failed");
     }
   }
-  *out = std::make_shared<WindowRankKernel>(ctx, type_list, sorter, desc);
+  if (function_name == "row_number") {
+    *out = std::make_shared<WindowRankKernel>(ctx, type_list, sorter, desc, true);
+  } else {
+    *out = std::make_shared<WindowRankKernel>(ctx, type_list, sorter, desc);
+  }
+
   return arrow::Status::OK();
 }
 
@@ -526,6 +532,10 @@ arrow::Status WindowRankKernel::AreTheSameValue(const std::vector<ArrayList>& va
                                                 std::shared_ptr<ArrayItemIndex> i,
                                                 std::shared_ptr<ArrayItemIndex> j,
                                                 bool* out) {
+  if (is_row_number_) {
+    *out = false;
+    return arrow::Status::OK();  
+  }
   auto typed_array_i =
       std::dynamic_pointer_cast<ArrayType>(values.at(i->array_id).at(column));
   auto typed_array_j =