In mysql, we can use the DAYOFWEEK and WEEKDAY functions to obtain the week of the specified date. The difference is that the weekly index obtained by DAYOFWEEK starts with 1, and the weekly index obtained by WEEKDAY starts with 0.
DAYOFWEEK (date)
Date and Time functionsThis chapter discusses some functions that can be used to manipulate time values. See section 11.3, "Date and Time type" for valid formats for each time and date type with a range and a specified value.
The following example
MySQL date data type and time type usage summary MySQL date type: Date format, storage space occupied, date range comparison.
Date type storage space date format date range
-----------------------------------------------------------------------------
MySQL date type: Date Format, storage space occupied, and date range comparison.Date type storage space date format date range-----------------------------------------------------------------------------------Datetime 8 bytes YYYY-MM-DD hh: mm: SS 10
MySQL obtains the current date and time stamp function bitsCN.com
MySQL returns the current date, time, and timestamp.
1.1 obtain the current date + time (date + time) function: now ()
Mysql> select now ();
+ ------- +
| Now () |
+ ------- +
| 22:2
MySQL
For the value range of each type and the valid format of the specified date value, see 7.3.6 Date and Time type.
Here is an example of using the date function. The following query Selects all records. The value of date_col is within the last 3
MySQL obtains the function Summary of the current date and time. For more information, see.
MySQL obtains the function Summary of the current date and time. For more information, see.
1.1 obtain the current date + time (date + time) function: now ()
MySQL Date TypeMySQL Date Type: Date format, occupied storage space, date range comparison.Date type storage space Date format date range------------ --------- --------------------- -----------------------------------------DateTime 8 bytes
Mysql> SELECT something from Tbl_name
WHERE To_days (now ()) –to_days (date_col)
DayOfWeek (date)
Returns the week index of date (1 = Sunday, 2 = Monday, ...). 7 = Saturday). Index values are compliant with ODBC standards.
mysql> SELECT DayOfWeek ('
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