cbdaaa62b2
…rgument. (#41008) ## Proposed changes ``` mysql> select cast(4562632 as time),hour(cast(4562632 as time)), minute(cast(4562632 as time)),second(cast(4562632 as time)); +-----------------------+-----------------------------+-------------------------------+-------------------------------+ | cast(4562632 as TIME) | hour(cast(4562632 as TIME)) | minute(cast(4562632 as TIME)) | second(cast(4562632 as TIME)) | +-----------------------+-----------------------------+-------------------------------+-------------------------------+ | 456:26:32 | 456 | 26 | 32 | +-----------------------+-----------------------------+-------------------------------+-------------------------------+ ``` <!--Describe your changes.--> --------- ## Proposed changes Issue Number: close #xxx <!--Describe your changes.--> Co-authored-by: Dongyang Li <hello_stephen@qq.com>
73 lines
2.8 KiB
C++
73 lines
2.8 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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#pragma once
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#include <string>
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#include "runtime/define_primitive_type.h"
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#include "runtime/primitive_type.h"
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#include "util/date_func.h"
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#include "vec/data_types/data_type_time.h"
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namespace doris {
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/// TODO: Due to the "Time type is not supported for OLAP table" issue, a lot of basic content is missing.It will be supplemented later.
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class TimeValue {
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public:
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constexpr static int64_t ONE_SECOND_MICROSECONDS = 1000000;
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constexpr static int64_t ONE_MINUTE_MICROSECONDS = 60 * ONE_SECOND_MICROSECONDS;
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constexpr static int64_t ONE_HOUR_MICROSECONDS = 60 * ONE_MINUTE_MICROSECONDS;
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constexpr static int64_t ONE_MINUTE_SECONDS = 60;
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constexpr static int64_t ONE_HOUR_SECONDS = 60 * ONE_MINUTE_SECONDS;
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using TimeType = typename PrimitiveTypeTraits<TYPE_TIMEV2>::CppType;
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using ColumnTime = vectorized::DataTypeTimeV2::ColumnType;
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// refer to https://dev.mysql.com/doc/refman/5.7/en/time.html
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// the time value between '-838:59:59' and '838:59:59'
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/// TODO: Why is the time type stored as double? Can we directly use int64 and remove the time limit?
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static int64_t check_over_max_time(double time) {
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const static int64_t max_time = 3020399LL * 1000 * 1000;
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// cast(-4562632 as time)
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// -456:26:32
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// hour(cast(-4562632 as time))
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// 456
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// second(cast(-4562632 as time))
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// 32
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if (time > max_time || time < -max_time) {
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return max_time;
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}
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return static_cast<int64_t>(time);
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}
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static std::string to_string(TimeType time, int scale) {
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return timev2_to_buffer_from_double(time, scale);
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}
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static int32_t hour(TimeType time) { return check_over_max_time(time) / ONE_HOUR_MICROSECONDS; }
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static int32_t minute(TimeType time) {
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return (check_over_max_time(time) % ONE_HOUR_MICROSECONDS) / ONE_MINUTE_MICROSECONDS;
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}
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static int32_t second(TimeType time) {
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return (check_over_max_time(time) / ONE_SECOND_MICROSECONDS) % ONE_MINUTE_SECONDS;
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}
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};
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} // namespace doris
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