I have date on MySQL table on the format of Fri Oct 30 09:50:37 2015, when I try to format using DATE_FORMAT(delv_time,'%Y-%m-%d') it return null.
That's not as date as far as MySQL is concerned. That's a string. You need to convert it into a date using STR_TO_DATE(). Then you can use DATE_FORMAT() to get only the date portion of the datetime.
DATE_FORMAT(STR_TO_DATE(delv_time,'%a %b %d %T %Y'),'%Y-%m-%d')
Related
THE SITUATION
I pull timestamps formatted in RFC 2822 (Sat, 01 Dec 2012 05:49:45 +0000) and store them in a VARCHAR field in MYSQL. I have a start_date and end_date.
THE GOAL
Search BETWEEN two dates (like start_date BETWEEN '2012-11-01' AND '2012-12-01')
THE CONDITIONS
I want to do this with pure SQL and not do post processing in PHP
THE ACCEPTABLE COMPROMISE
I don't want to, but I will convert and store them as DATETIME by using PHP if needed.
Can anyone help me accomplish my goal (listed above).
Rick
You could convert your string dates do datetime using str_to_date:
select str_to_date('Sat, 01 Dec 2012 05:49:45 +0000','%a, %d %b %Y %T')
If you need to convert also timezone, try this:
set #datestring='Sat, 01 Dec 2012 05:49:45 +0000';
select
CONVERT_TZ(
str_to_date(#datestring,'%a, %d %b %Y %T'),
concat(mid(#datestring, 27, 3), ':', mid(#datestring, 30, 2)),
'+00:00'
)
Store them as a native DATETIME. This is the only sane approach.
Why are you so opposed to using the proper tool for the job?
Storing timestamps as a string is poor use of the database features. Since they were all the same format, they could have easily been converted to a datetime on input.
I have a time stamp of the form "17:16:28 Sep 13, 2011 PDT" in a MySQL database. The type of the field in the database is VARCHAR. I would like to convert this VARCHAR to a field of type TIMESTAMP in MySQL.
I tried a few solutions suggested elsewhere on this site, such as using a string_to_time function, but these solutions all start from a different type of timestamp.
How do I convert the VARCHAR timestamp mentioned above to a TIMESTAMP recognised by MySQL, in such a way that I can sort my data by date?
You can do this by using STR_TO_DATE function in MySQL, try this:
SELECT STR_TO_DATE("17:16:28 Sep 13, 2011 PDT", '%H:%i:%s %b %d, %Y PDT');
EDIT:
SELECT STR_TO_DATE(field_name, '%H:%i:%s %b %d, %Y PDT') AS new_time
FROM table_name;
Use str_to_date with formatting:
select unix_timestamp(str_to_date("17:16:28 Sep 13, 2011 PDT","%T %b %d, %Y PDT"));
If the day part (e.g.: 13) is not represented as 01, 02..etc. but 1, 2, 3 when it's only one digit, change the %d to %e
Be careful because the timezone will not be recognized, it's only a string literal for the formatting! If you have different timezones for different records you should use the convert_tz() function to get the proper timestamp.
I want to convert a field that represents a date-time but is currently a VARCHAR to a DATETIME field.
Currently the representation looks like: 'Sun May 20 01:04:39 +0000 2012'
I want to do this operation in a query.
Use STR_TO_DATE
SELECT STR_TO_DATE('Sun May 20 01:04:39 +0000 2012', '%a %M %d %H:%i:%S +0000 %Y')
SQLFiddle Demo
Date Format
Use the DATE function.
This does the job and can be used inside queries.
How do I convert the following format to unix timestamp?
Apr 15 2012 12:00AM
The format I get from DB seems to have AM at the end.
I've tried using the following but it did not work:
CONVERT(DATETIME, Sales.SalesDate, 103) AS DTSALESDATE,
CONVERT(TIMESTAMP, Sales.SalesDate, 103) AS TSSALESDATE
where Sales.SalesDate value is Apr 15 2012 12:00AM
Here's an example of how to convert DATETIME to UNIX timestamp:
SELECT UNIX_TIMESTAMP(STR_TO_DATE('Apr 15 2012 12:00AM', '%M %d %Y %h:%i%p'))
Here's an example of how to change date format:
SELECT FROM_UNIXTIME(UNIX_TIMESTAMP(STR_TO_DATE('Apr 15 2012 12:00AM', '%M %d %Y %h:%i%p')),'%m-%d-%Y %h:%i:%p')
Documentation: UNIX_TIMESTAMP, FROM_UNIXTIME
You will certainly have to use both STR_TO_DATE to convert your date to a MySQL standard date format, and UNIX_TIMESTAMP to get the timestamp from it.
Given the format of your date, something like
UNIX_TIMESTAMP(STR_TO_DATE(Sales.SalesDate, '%M %e %Y %h:%i%p'))
Will gives you a valid timestamp. Look the STR_TO_DATE documentation to have more information on the format string.
If you want to create a timestamp as returned by java's Date.getTime() you should multiply by 1000.
SELECT UNIX_TIMESTAMP(STR_TO_DATE('Apr 15 2012 12:00AM', '%M %d %Y %h:%i%p'))*1000
Now for a more standard date format use:
SELECT UNIX_TIMESTAMP(STR_TO_DATE('2022-12-14 20:58:00', '%Y-%m-%d %H:%i:%s'))*1000
From http://www.epochconverter.com/
SELECT DATEDIFF(s, '1970-01-01 00:00:00', GETUTCDATE())
My bad, SELECT unix_timestamp(time) Time format: YYYY-MM-DD HH:MM:SS or YYMMDD or YYYYMMDD. More on using timestamps with MySQL:
http://www.epochconverter.com/programming/mysql-from-unixtime.php
In my table, dates are stored like this: 2011-03-03T13:30:00
I'm trying to output dates like this: March 3, 2011 1:30 PM
I'd much rather work it into the query rather than use php to format it, but I'm having some difficulty doing that. Trying various iterations of DATE_FORMAT, but it's not giving me what I want, maybe because of the way it's being stored?
You basically have two different operations you may need to perform when handling dates: date to string and vice versa. The functions you can use are DATE_FORMAT() and STR_TO_DATE(). Full reference can be found in the manual.
Usage example:
SELECT
DATE_FORMAT(CURRENT_TIMESTAMP, '%d/%m/%Y %H:%i:%s'),
STR_TO_DATE('31/12/2001 23:55:00', '%d/%m/%Y %H:%i:%s')
If your dates are not real dates but strings, you'll need to convert twice: from string to date and again from date to string:
SELECT
STR_TO_DATE('2011-03-03T13:30:00', '%Y-%m-%dT%H:%i:%s'),
DATE_FORMAT(STR_TO_DATE('2011-03-03T13:30:00', '%Y-%m-%dT%H:%i:%s'), '%M %e, %Y %l:%i %p')
Use DATE_FORMAT:
DATE_FORMAT(date, "%M %e, %Y %h:%i %p")
The MySQL date storage format is actually YYYY-MM-DD, but using the str_to_date() and date_format() functions you can accept and generate any date format required.
select DATE_FORMAT(DateTable.MyDate,'%d %b %y')
from DateTable
would return
04 Nov 08
You should really use a DATETIME field for such things (and clean the input on the way in) rather than having to sort this out at the point of output.
Irrespective, you can simply use the DATE_FORMAT function to re-format your field into the format you require, although this might produce some un-expected results on a VARCHAR or CHAR field. (If so, you'll have to use STR_TO_DATE or failing that some various string functions to extract the date bits you require.)