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# Proposed changes Issue Number: close #6238 Co-authored-by: HappenLee <happenlee@hotmail.com> Co-authored-by: stdpain <34912776+stdpain@users.noreply.github.com> Co-authored-by: Zhengguo Yang <yangzhgg@gmail.com> Co-authored-by: wangbo <506340561@qq.com> Co-authored-by: emmymiao87 <522274284@qq.com> Co-authored-by: Pxl <952130278@qq.com> Co-authored-by: zhangstar333 <87313068+zhangstar333@users.noreply.github.com> Co-authored-by: thinker <zchw100@qq.com> Co-authored-by: Zeno Yang <1521564989@qq.com> Co-authored-by: Wang Shuo <wangshuo128@gmail.com> Co-authored-by: zhoubintao <35688959+zbtzbtzbt@users.noreply.github.com> Co-authored-by: Gabriel <gabrielleebuaa@gmail.com> Co-authored-by: xinghuayu007 <1450306854@qq.com> Co-authored-by: weizuo93 <weizuo@apache.org> Co-authored-by: yiguolei <guoleiyi@tencent.com> Co-authored-by: anneji-dev <85534151+anneji-dev@users.noreply.github.com> Co-authored-by: awakeljw <993007281@qq.com> Co-authored-by: taberylyang <95272637+taberylyang@users.noreply.github.com> Co-authored-by: Cui Kaifeng <48012748+azurenake@users.noreply.github.com> ## Problem Summary: ### 1. Some code from clickhouse **ClickHouse is an excellent implementation of the vectorized execution engine database, so here we have referenced and learned a lot from its excellent implementation in terms of data structure and function implementation. We are based on ClickHouse v19.16.2.2 and would like to thank the ClickHouse community and developers.** The following comment has been added to the code from Clickhouse, eg: // This file is copied from // https://github.com/ClickHouse/ClickHouse/blob/master/src/Interpreters/AggregationCommon.h // and modified by Doris ### 2. Support exec node and query: * vaggregation_node * vanalytic_eval_node * vassert_num_rows_node * vblocking_join_node * vcross_join_node * vempty_set_node * ves_http_scan_node * vexcept_node * vexchange_node * vintersect_node * vmysql_scan_node * vodbc_scan_node * volap_scan_node * vrepeat_node * vschema_scan_node * vselect_node * vset_operation_node * vsort_node * vunion_node * vhash_join_node You can run exec engine of SSB/TPCH and 70% TPCDS stand query test set. ### 3. Data Model Vec Exec Engine Support **Dup/Agg/Unq** table, Support Block Reader Vectorized. Segment Vec is working in process. ### 4. How to use 1. Set the environment variable `set enable_vectorized_engine = true; `(required) 2. Set the environment variable `set batch_size = 4096; ` (recommended) ### 5. Some diff from origin exec engine https://github.com/doris-vectorized/doris-vectorized/issues/294 ## Checklist(Required) 1. Does it affect the original behavior: (No) 2. Has unit tests been added: (Yes) 3. Has document been added or modified: (No) 4. Does it need to update dependencies: (No) 5. Are there any changes that cannot be rolled back: (Yes)
57 lines
2.2 KiB
C++
57 lines
2.2 KiB
C++
// Licensed to the Apache Software Foundation (ASF) under one
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// or more contributor license agreements. See the NOTICE file
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// distributed with this work for additional information
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// regarding copyright ownership. The ASF licenses this file
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// to you under the Apache License, Version 2.0 (the
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// "License"); you may not use this file except in compliance
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// with the License. You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing,
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// software distributed under the License is distributed on an
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// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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// KIND, either express or implied. See the License for the
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// specific language governing permissions and limitations
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// under the License.
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// This file is copied from
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// https://github.com/ClickHouse/ClickHouse/blob/master/src/Functions/IntDiv.h
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// and modified by Doris
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#pragma once
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#include "common/compiler_util.h"
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#include "common/logging.h"
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#include "common/status.h"
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#include "runtime/decimalv2_value.h"
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#include "type_traits"
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#include "vec/columns/column_nullable.h"
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#include "vec/common/exception.h"
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#include "vec/data_types/number_traits.h"
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namespace doris::vectorized {
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#pragma GCC diagnostic push
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#pragma GCC diagnostic ignored "-Wsign-compare"
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#pragma GCC diagnostic pop
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template <typename A, typename B>
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struct DivideIntegralImpl {
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using ResultType = typename NumberTraits::ResultOfIntegerDivision<A, B>::Type;
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template <typename Result = ResultType>
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static inline Result apply(A a, B b, NullMap& null_map, size_t index) {
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null_map[index] = b == 0;
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/// Otherwise overflow may occur due to integer promotion. Example: int8_t(-1) / uint64_t(2).
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/// NOTE: overflow is still possible when dividing large signed number to large unsigned number or vice-versa. But it's less harmful.
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if constexpr (std::is_integral_v<A> && std::is_integral_v<B> &&
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(std::is_signed_v<A> || std::is_signed_v<B>))
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return std::make_signed_t<A>(a) / (std::make_signed_t<B>(b) + (b == 0));
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else
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return a / (b + (b == 0));
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}
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};
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} // namespace doris::vectorized
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