MYSQL gets the current date and date formatGet system Date: now ()Formatted Date: date_format (date, format)Note: Date: Time fieldFormat: Date formatsReturns the system date, output 2009-12-25 14:38:59Select Now ();Output 09-12-25Select Date_format (
Turn from:http://blog.chinaunix.net/space.php?uid=11327712&do=blog&id=32416MySQL Date Type: Date format, occupied storage space, date range comparison.Date type storage space date format date range-----------------------------------------------------
Here is an example of using a date function. The following query selects records for all Date_col values within the last 30 days.Mysql> SELECT something from Tbl_nameWHERE To_days (now ()) –to_days (date_col) DAYOFWEEK (date)Returns the week index
functions for date, time \ Timestamp in SQL statements in MySQL databaseOne MySQL gets the current date time function1.1 Get the current date + time (date + times) function: Now ()Mysql> Select Now ();+―――――――+| Now () |+―――――――+| 2008-08-08 22:20:46
description of MySQL data_add function and date format function
Date_add (date, INTERVAL expr type) date_sub (date, INTERVAL expr type )
These functions perform date operations. Date is a DATETIME or date value used to specify the
MySQL obtains the current date and time function.
Obtain the current date + time (date + time) function: now ()
mysql> select now();+---------------------+| now() |+---------------------+| 2008-08-08 22:20:46 |+---------------------+
Function for
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
Mysql data from the previous month, January, a week ago, mainly used DATE_SUB,
Refer to the following
Copy codeThe Code is as follows:SELECT * FROM yh_contentWhere inputtime> DATE_SUB (CURDATE (), INTERVAL 1 DAY)Where inputtime> DATE_SUB (CURDATE (),
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 stores statistics and inserts data, and mysql stores data.
The statistical stored procedure is to insert the statistical results into a table, and the background can have scheduled tasks to call this stored procedure. The following services
PHP development Notes Series (3)-date and time ??? The first two articles completed "PHP Development notes series (1)-PDO use" and "PHP Development notes series (2)-string use", today, I will take a look at the date and time processing in PHP and
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 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
In the mysql database, count the logs of the current day:
For example, the Date Field of the bean database is usedate.
Calculate the log SQL statement for the current day:
select * from bean where date(usedate) = curdate();
Curdate () indicates the
Mysql generates a time dimension table. mysql generates a dimension table.
Generate a time dimension table in mysql
Using mysql common date functions to generate a time dimension table is the most efficient and simple, without the support of other
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 data from a year ago a week ago yesterday the main use of date_sub,
Refer to the following
Copy Code code as follows:
SELECT * from Yh_content
where Inputtime>date_sub (Curdate (), INTERVAL 1 day)
where Inputtime>date_sub
From_unixtime () is the time function in MySQLDate is the parameter that needs to be processed (the parameter is a UNIX timestamp), can be a field name, or it can be a Unix timestamp stringThe following '%y%m%d ' is primarily the formatting of the
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.