I want to update date field in my table. I am currently getting date value from the form like mm/dd/yy i.e(05/06/13) format. I want the date to convert into Y-m-d (i.e 2013-05-06) format and to update it. I used DATE_FORMAT but the date is not updating .
UPDATE tableName
SET coldate = DATE_FORMAT(STR_TO_DATE(colDate,'%m/%d/%y'),'%Y/%m/%d')
SQLFiddle Demo
Related
I'm working on a project which was apparently built by a total beginner. The date is being stored in a varchar column in the format 'Jan 20, 2010'. I need to convert this column to a DATE or DATETIME but when I do so (on a backup), the values becomes 0000-00-00.
I tried to convert the values to proper format before changing the column type using str_to_date() and DATE() functions but both report invalid string format. Is it possible to convert this data to a valid date format?
Use STR_TO_DATE, and update this column with a proper date value using the current text date.
UPDATE yourTable
SET new_date = STR_TO_DATE(old_date, '%b %e, %Y');
My guess is that either you are using the wrong format mask and/or some of your text dates have problems. Here is a brief demo showing that the above logic works.
Demo
Use this instead.
UPDATE table_name
SET DATES = DATE_FORMAT(DATES, '%Y-%m-%d');
I suggest to use another column to store the updated date value. I.E: update tb_date set new_date_column = DATE_FORMAT(date_column, '%y-%m-%d');
Check it out, Hope it'll work for you.
I am trying to convert dates in the format mm/dd/yyyy to the standard date format yyyy-mm-dd using the STR_TO_DATE function. Some fields in my date column are null and some contain a date.
For instance, 8/22/2011 should become 2011-8-22.
When I select my date column, it looks like this:
8/22/2011
8/10/2010
5/12/2012
etc.
I tried using the code
UPDATE table SET date = STR_TO_DATE(date, '%m/%d/%Y')
which filled the column with NULL values. Also tried
UPDATE table SET date = STR_TO_DATE(#date, '%m/%d/%Y')
with same result, although this time I did not get a warning message.
The first one is correct:
UPDATE table SET date = STR_TO_DATE(date, '%m/%d/%Y')
But if the date is not valid (not in %m/%d/%Y format) then it returns NULL
Try executing and then showing warnings. It tells you what is wrong:
UPDATE table SET date = STR_TO_DATE(date, '%m/%d/%Y');
SHOW WARNINGS;
Maybe some dates are not in format %m/%d/%Y (posibly %d/%m/%Y)
My current date formats are 01/01/2013 .... DD/MM/YYYY
How can I convert them all into MYSQL dates? I'm under The impression they are in the format YYYY-MM-DD
I don't know where to start.
my problem is that the dates are being ordered in the american way whilst they are in british format :(
Use the following query.
update tbl_name set your_field_name= str_to_date(your_field_name, '%d/%m/%Y');
It will update the value of your date from DD/MM/YYYY to YYYY/MM/DD.
Then you can change your filed type to date.
You can extract each part in php and concat the dd, mm, yyyy and save it to the DB
Why not DATE_FORMAT
DATE_FORMAT(date,'%Y-%m-%d')
How to convert date in MYSQL to correct format:
SELECT DATE_FORMAT(column_name, '%d/%m/%Y') FROM tablename
or
SELECT t.id, DATEDIFF(STR_TO_DATE(t.carddate, '%m/%d/%Y'), CURDATE)
FROM TABLE t
http://dev.mysql.com/doc/refman/5.5/en/date-and-time-functions.html#function_str-to-date
http://dev.mysql.com/doc/refman/5.0/en/date-and-time-functions.html#function_get-format
http://dev.mysql.com/doc/refman/5.1/en/date-and-time-functions.html
I have a very similar situation. I converted American date format "%Y-%d-%m" to correct format '%Y-%m-%d'. This is how I did it...
update table_name set my_date = DATE_FORMAT( STR_TO_DATE( my_date, '%Y-%d-%m' ) , '%Y-%m-%d' );
The first date string format '%Y-%d-%m' needs to be how the date is currently formatted in your table. The second date string is what you want to convert it to.
I am trying to insert '2009-03-04T17:49:20Z' which is in zulu time into datetime type column of mysql table.
Any idea how I can do that?
Use str_to_date() to parse your date format like this:
set myDate = str_to_date('2009-03-04T17:49:20Z', '%Y-%m-%dT%H:%i:%sZ')
I have the following where clause
AND DATE_FORMAT( l.created_on, "%d/%m/%Y" ) BETWEEN '06/02/2013' AND '07/02/2013'
where created_on is a timestamp.
Now for some reason the query returns rows from previous months as well. anyone knows why?
NOTE :
I need the date to be in that specific format
Mysql string date format follows pattern yyyy-mm-dd. Do not convert to dates if you have timestamps, just compare the timestamps.
WHERE l.created_on
BETWEEN UNIX_TIMESTAMP('2012/02/06') AND UNIX_TIMESTAMP('2013/02/07')
if created_on is already a date (datatype),
you can directly query it using,
WHERE created_on BETWEEN '2013-02-06' AND '2013-02-07'
but if date is a string, use STR_TO_DATE
WHERE STR_TO_DATE(l.created_on, '%d-%m-%Y') BETWEEN '2013-02-06' AND '2013-02-07'
UPDATE 1
since you don't want to change the format of your inputted date, then you need to format it using STR_TO_DATE
WHERE l.created_on BETWEEN STR_TO_DATE('06/02/2013','%d/%m/%Y') AND
STR_TO_DATE('07/02/2013','%d/%m/%Y')