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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
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
Detailed description of mysql to obtain the current date and format, detailed description of mysql current date
MySQL obtains the current date and Date Format
Get system date: NOW ()
Format date: DATE_FORMAT (date, format)
Note: date: Time
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
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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> 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 ('
The following query selects the records for all date_col values within the last 30 days.
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
MySQL Date TypeMySQL Date Type: Date format, occupied storage space, date range comparison.Date type storage space Date format date range------------ --------- --------------------- -----------------------------------------DateTime 8 bytes
Blog. csdn. netkangbrotherarticledetails7030304MYSQL obtains the current date and date format. system date: NOW () formatted date: DATE_FORMAT (date, format) Note: date: Time Field format: returns the system date, output 2009-12-2514: 38: 59
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