[MySQL] converts the datetime format to bitsCN.com.
[MySQL] converts the datetime format
Here is an example of using the date function. The following query selects all records. The value of date_col is within the last 30 days: www.bitsCN.com
Mysql>
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
For the description of the valid format of the value range of each type and the specified date and time value, see 7.3.6 Date and Time type.
For the description of the valid format of the value range of each type and the specified date and time
MySQL's numeric data types can be roughly divided into two categories, one is an integer and the other is a floating-point or decimal. Many different subtypes are available for each of these categories, and each subtype supports data of different
Conversion of the specified format of the millisecond value and date in MySQL and its time function bitsCN.com I. conversion of the millisecond value to the specified date format
Use the FROM_UNIXTIME (unix_timestamp, format) function provided by
MySQL numeric data can be roughly divided into two types: one is an integer and the other is a floating point or decimal. Many different subtypes are available for each of these classes. Each subtype supports data of different sizes. MySQL allows us
Reprinted from: http://blog.csdn.net/buutterfly/article/details/5630203
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Here is an example of using a date function. The following query selects all records and its date_col value is within the last 30 days:
Mysql> SELECT something from table
WHERE To_days (now ())-To_days (Date_col)
DayOfWeek (date)
Returns the week
Concrete Example 1. PHP Server ComponentsFor beginners, it is recommended to use the integrated server component, which already includes PHP, Apache, Mysql and other services, eliminating the time spent by developers in the tedious configuration
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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