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
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] 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>
For operations on string positions, the first position is marked as 1.
ASCII (str)
Returns the ASCII code value of the leftmost character of the string str. If Str is an empty string, returns 0. If STR is NULL, returns NULL.
Mysql> Select ASCII (' 2
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
String function string comparison function if the result length is greater than the maximum value of the max_allowed_packet system variable, the return value of the string value function is NULL. See section 7.5.2 "Adjust server Parameters ".
String
String functionsstring comparison functionsIf the length of the result is greater than the maximum value of the Max_allowed_packet system variable, the return value of the string value function is null. See section 7.5.2, "Tuning server parameters."
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 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 (
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 (
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.