5b0f11b665
`WEEKDAY` in MySQL: returns an index from 0 to 6 for Monday to Sunday. `DAYOFWEEK` in MySQL: returns an index from 1 to 7 for Sunday to Saturday. Doris only have `DAYOFWEEK` function, so I add `WEEKDAY` function. Thanks for the following materials: - https://github.com/apache/incubator-doris/pull/6982/files - https://www.bilibili.com/video/BV1V44y1Y7Ro
66 lines
1.9 KiB
Markdown
66 lines
1.9 KiB
Markdown
---
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{
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"title": "weekday",
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"language": "en"
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}
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---
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<!--
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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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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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http://www.apache.org/licenses/LICENSE-2.0
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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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KIND, either express or implied. See the License for the
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# weekday
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## Description
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### Syntax
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`INT WEEKDAY (DATETIME date)`
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The WEEKDAY function returns the index value of the working day of the date, that is, 0 on Monday, 1 on Tuesday, and 6 on Sunday.
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The parameter is Date or Datetime type
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Notice the difference between WEEKDAY and DAYOFWEEK:
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```
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+-----+-----+-----+-----+-----+-----+-----+
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| Sun | Mon | Tues| Wed | Thur| Fri | Sat |
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+-----+-----+-----+-----+-----+-----+-----+
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weekday | 6 | 0 | 1 | 2 | 3 | 4 | 5 |
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+-----+-----+-----+-----+-----+-----+-----+
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dayofweek | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
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+-----+-----+-----+-----+-----+-----+-----+
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```
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## example
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```
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mysql> select weekday('2019-06-25');
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+--------------------------------+
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| weekday('2019-06-25 00:00:00') |
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+--------------------------------+
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| 1 |
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+--------------------------------+
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mysql> select weekday(cast(20190625 as date));
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+---------------------------------+
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| weekday(CAST(20190625 AS DATE)) |
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+---------------------------------+
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| 1 |
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+---------------------------------+
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```
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## keyword
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WEEKDAY |