zhiqiang-hhhh commented on code in PR #34391:
URL: https://github.com/apache/doris/pull/34391#discussion_r1590514196
##########
be/src/vec/functions/round.h:
##########
@@ -696,49 +679,134 @@ class FunctionRounding : public IFunction {
return Status::OK();
}
- ColumnNumbers get_arguments_that_are_always_constant() const override {
return {1}; }
-
+ //// We moved and optimized the execute_impl logic of function_truncate.h
from PR#32746,
+ //// as well as make it suitable for all functions.
Status execute_impl(FunctionContext* context, Block& block, const
ColumnNumbers& arguments,
- size_t result, size_t /*input_rows_count*/) const
override {
- const ColumnWithTypeAndName& column =
block.get_by_position(arguments[0]);
- Int16 scale_arg = 0;
- if (arguments.size() == 2) {
- RETURN_IF_ERROR(get_scale_arg(block.get_by_position(arguments[1]),
&scale_arg));
- }
-
+ size_t result, size_t input_rows_count) const override
{
+ const ColumnWithTypeAndName& column_general =
block.get_by_position(arguments[0]);
+ const auto* col_general = column_general.column.get();
ColumnPtr res;
+
+ /// potential argument types(optimized from four types in previous PR
to two):
+ /// if the SECOND argument is MISSING(would be considered as ZERO
const) or CONST, then we have 1st type:
+ /// 1. func(Column), func(ColumnConst), func(Column, ColumnConst),
func(ColumnConst, ColumnConst)
+ /// otherwise, the SECOND arugment is COLUMN, we have another type:
+ /// 2. func(Column, Column), func(ColumnConst, Column)
+
auto call = [&](const auto& types) -> bool {
using Types = std::decay_t<decltype(types)>;
using DataType = typename Types::LeftType;
if constexpr (IsDataTypeNumber<DataType> ||
IsDataTypeDecimal<DataType>) {
using FieldType = typename DataType::FieldType;
- res = Dispatcher<FieldType, rounding_mode,
tie_breaking_mode>::apply_vec_const(
- column.column.get(), scale_arg);
+ // the SECOND argument is MISSING or CONST
+ if (arguments.size() == 1 ||
+
is_column_const(*block.get_by_position(arguments[1]).column)) {
Review Comment:
After use_default_impl_for_const returns false, for `SELECT number,
truncate(123.345 , 1) FROM numbers("number"="10");` we will not go into this
branch.
--
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
To unsubscribe, e-mail: commits-unsubscr...@doris.apache.org
For queries about this service, please contact Infrastructure at:
us...@infra.apache.org
---------------------------------------------------------------------
To unsubscribe, e-mail: commits-unsubscr...@doris.apache.org
For additional commands, e-mail: commits-h...@doris.apache.org
