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版本：Latest-4.1

dayname

返回指定日期对应的星期名称。

参数为 DATE 或者 DATETIME 类型。

语法​

VARCHAR DAYNAME(DATETIME|DATE date)

示例​

select dayname('2007-02-03 00:00:00');
+--------------------------------+
| dayname('2007-02-03 00:00:00') |
+--------------------------------+
| Saturday                       |
+--------------------------------+
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