expression: implement vectorized evaluation for builtinRealIsNullSig (#…

…12521)
pingcap · Oct 8, 2019 · 930b852 · 930b852
1 parent fd51034
commit 930b852
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Showing 2 changed files with 23 additions and 2 deletions.
diff --git a/expression/builtin_op_vec.go b/expression/builtin_op_vec.go
@@ -162,11 +162,31 @@ func (b *builtinIntIsNullSig) vecEvalInt(input *chunk.Chunk, result *chunk.Colum
 }
 
 func (b *builtinRealIsNullSig) vectorized() bool {
-	return false
+	return true
 }
 
 func (b *builtinRealIsNullSig) vecEvalInt(input *chunk.Chunk, result *chunk.Column) error {
-	return errors.Errorf("not implemented")
+	numRows := input.NumRows()
+	buf, err := b.bufAllocator.get(types.ETReal, numRows)
+	if err != nil {
+		return err
+	}
+	defer b.bufAllocator.put(buf)
+
+	if err := b.args[0].VecEvalReal(b.ctx, input, buf); err != nil {
+		return err
+	}
+
+	result.ResizeInt64(numRows, false)
+	i64s := result.Int64s()
+	for i := 0; i < numRows; i++ {
+		if buf.IsNull(i) {
+			i64s[i] = 1
+		} else {
+			i64s[i] = 0
+		}
+	}
+	return nil
 }
 
 func (b *builtinUnaryNotRealSig) vectorized() bool {

diff --git a/expression/builtin_op_vec_test.go b/expression/builtin_op_vec_test.go
@@ -46,6 +46,7 @@ var vecBuiltinOpCases = map[string][]vecExprBenchCase{
 	},
 	ast.UnaryMinus: {},
 	ast.IsNull: {
+		{retEvalType: types.ETInt, childrenTypes: []types.EvalType{types.ETReal}},
 		{retEvalType: types.ETInt, childrenTypes: []types.EvalType{types.ETInt}},
 		{retEvalType: types.ETInt, childrenTypes: []types.EvalType{types.ETDecimal}},
 		{retEvalType: types.ETInt, childrenTypes: []types.EvalType{types.ETDuration}},