This function is used to return the day of the current week.
Syntax
weekday (string date)
Parameters
Parameter |
Mandatory |
Type |
Description |
|---|---|---|---|
date |
Yes |
DATE or STRING |
Date that needs to be processed The following formats are supported:
|
Return Values
The return value is of the INT type.
- If Monday is used as the first day of a week, the value 0 is returned. For other weekdays, the return value increases in ascending order. For Sunday, the value 6 is returned.
- If the value of date is not of the DATE or STRING type, the error message "data type mismatch" is displayed.
- If the value of date is of the DATE or STRING type but is not in one of the supported formats, NULL is returned.
- If the value of date is NULL, NULL is returned.
Example Code
The value 2 is returned.
select weekday ('2023-08-16 10:54:36');
The value NULL is returned.
select weekday (null);