weekday

Description

Syntax

INT WEEKDAY (DATETIME date)

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.

The parameter is Date or Datetime type

Notice the difference between WEEKDAY and DAYOFWEEK:

  1.           +-----+-----+-----+-----+-----+-----+-----+
  2.           | Sun | Mon | Tues| Wed | Thur| Fri | Sat |
  3.           +-----+-----+-----+-----+-----+-----+-----+
  4.   weekday |  6  |  0  |  1  |  2  |  3  |  4  |  5  |
  5.           +-----+-----+-----+-----+-----+-----+-----+
  6. dayofweek |  1  |  2  |  3  |  4  |  5  |  6  |  7  |
  7.           +-----+-----+-----+-----+-----+-----+-----+

example

  1. mysql> select weekday('2019-06-25');
  2. +--------------------------------+
  3. | weekday('2019-06-25 00:00:00') |
  4. +--------------------------------+
  5. |                              1 |
  6. +--------------------------------+
  8. mysql> select weekday(cast(20190625 as date)); 
  9. +---------------------------------+
  10. | weekday(CAST(20190625 AS DATE)) |
  11. +---------------------------------+
  12. |                               1 |
  13. +---------------------------------+

keyword

WEEKDAY