be/src/vec/core/materialize_block.h

// Licensed to the Apache Software Foundation (ASF) under one
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// distributed with this work for additional information
// regarding copyright ownership.  The ASF licenses this file
// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
// with the License.  You may obtain a copy of the License at
//
//   http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing,
// software distributed under the License is distributed on an
// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied.  See the License for the
// specific language governing permissions and limitations
// under the License.
// This file is copied from
// https://github.com/ClickHouse/ClickHouse/blob/master/src/DataStreams/materializeBlock.h
// and modified by Doris

#pragma once

#include "vec/core/block.h"

namespace doris::vectorized {

/** Converts columns-constants to full columns ("materializes" them).
  */
void materialize_block_inplace(Block& block);

template <typename Iterator>
void materialize_block_inplace(Block& block, Iterator start, Iterator end) {
    for (; start < end;) {
        block.replace_by_position_if_const(*start);
        ++start;
    }
}
} // namespace doris::vectorized