I have a datetime field that saves data as a string. But I want to save it as a date type.
Is there any date data type in Postgre sql that accepts this kind of date format?
February 1, 2016, 10:17 AM
You can use TIMESTAMP, DATE or TIME field to save your date, but date variables/ fields in postgres doesnt save format.
http://www.postgresql.org/docs/9.4/static/datatype-datetime.html
You have to use postgres function to_date(text, text) to convert from string to date
http://www.postgresql.org/docs/9.4/static/functions-formatting.html
You have TIMESTRAMP and TIMESTAMP WITH TIME ZONE.
You can have all the information here: http://www.postgresql.org/docs/9.4/static/datatype-datetime.html
Related
I have issue with this date m/d/y for example 01/09/15 but when i insert that in my table of field name date and declared date i adde to me 2001/09/15 how can i save this format 01/09/15 in field database of my table
You can't change the format of mysql dates. You could save your date as a varchar but you can't use any manipulation.
You can save it as a mysql date or a time int, and then cast it to the format that you want, using date function.
You can read more about this in this post:
Change date format (in DB or output) to dd/mm/yyyy - PHP MySQL
I hope this will be useful.
Hope somebody can advise on the following:
I have created a table into my database which has a coloumn with datatype defined as DATE. The normal MySQL date order is YYYY-MM-DD, however I need to enter it in format DD-MM-YYYY.
I am using php to insert data into my table, and I was wondering at what point should I convert the date format.
To summerize, I am asking the following:
Is it possible to insert into MySQL database where field is formatted as DATE, a date in format DD-MM-YYYY instead in format YYYY-MM-DD?
If not possible, can I convert a value posted from PHP in format DD-MM-YYYY into the format YYYY-MM-DD using the MySQL syntax or I should use PHP to post the value in YYYY-MM-DD format?
Thank you in advance
You would use STR_TO_DATE in your INSERT to convert the date to the ANSI standard date format.
INSERT INTO `table` (`date`) VALUES (STR_TO_DATE('01-05-2013','%d-%m-%Y'));
You can then use DATE_FORMAT to convert the ANSI standard date to the format you want.
A date is always stored in the same manner in the DB.
When inserting you have to give the DB a format that it can parse as date. And when reading from the DB you can format the date in any way you like.
So you have to format your data before inserting into the correct format. Otherwise the DB can't store it as date.
You can go to different mysql website and get this answer. For Example:
http://www.tutorialspoint.com/mysql/mysql-date-time-functions.htm
SELECT STR_TO_DATE('21,5,2013','%d,%m,%Y');
I am saving date of birth in MySQLusing my form with
db->insert()
method, but it's not properly inserted in the database. How can I save the input field value in the proper date format in MySQL? (In MySQL the type of dob is also set to "DATE".)
MYSQL DATE - A date in YYYY-MM-DD format
so you need to convert via sql or php
PHP
$date= date('YYYY-MM-DD',strtotime($old_date));
$date= date('Y-m-d',strtotime($old_date));
if you have taken your dateofbirth field's datatype as date then you have to insert date in yyyy-mm-dd format.
While creating a table, I defined one column of DATE type and one of TIME type. As I insert the values using a php script like :
date--> 2013-11-11
time--> 12:12:12
and when I query the sql browser I see those values in exactly the same manner. But I am unaware of the format with which it stores the date and time. Like yyyy-mm-dd or yyyy-dd-mm.
Is there any way I change it ?
Dates and times are stored in MySQL in the format "YYYY-MM-DD" and "YYYY-MM-DD HH:MM:SS" which is not necessarily the format you want to display in your web page or application. There are two methods to reformat the date and time into the desired format. One is to do it in the SQL query in MySQL calling the DATE_FORMAT() function and the other is to do it with the programming language retrieving the data from the MySQL database.
From MySQL 5.1:
The DATE type is used for values with a date part but no time part.
MySQL retrieves and displays DATE values in 'YYYY-MM-DD' format. The
supported range is '1000-01-01' to '9999-12-31'.
For second question: you can't change default DATE format for the storage, please see this question also
http://dev.mysql.com/doc/refman/5.5/en/datetime.html
MySQL retrieves and displays DATE values in 'YYYY-MM-DD' format
http://dev.mysql.com/doc/refman/5.5/en/time.html
MySQL retrieves and displays TIME values in 'HH:MM:SS' format
I do not believe this can be changed. But you do not care. You can extract dates and times in the format of your liking with the DATE_FORMAT() and the TIME_FORMAT() functions.
If you want to know the internal storage of Date columns, you can check Date and Time Data Type Representation, but I think you want to select date in different format; which other guys already answered about it.
It is stored in 3 bytes, and it is always YYYY-MM-DD.
The datetime is in Y-m-d H:i:s format, or year month day and hour minute second. If you only use a part, the format stays the same.
If you want to change the format there are many ways. The easiest would be to do something like return date("Y-d-m H:i:s", strtotime($mysqldatetime)); (will turn it to dutch date);
Keep in mind that you are using two seperate columns, one for time and one for the date. If you use only one column the missing values are filled with default values (time would be 00:00:00 and date would be 1970-01-01
I am working with dates, in both PHP as well as MySQL. EVerytime I use to convert date in unix format. But this time I have taken field in DB as date. But issue is it is taking yyyy-mm-dd format. I want to store it in dd-mm-yyyy format. Is this possible if I set default setting of DB. or each time I have to explode the dd-mm-yyyy format in PHP and convert it in YYYY-MM-DD format. Its my first query.
Second query is I wish to fetch the records from today's date. I mean dates after today's date. Like today then tomorrow then so on.... Is it possible to use order by on date field.
Just use:
$date = date('d-m-Y', strtotime($dateFromDB));
That will convert from MySQL DateTime to the format you have specified.
It is possible to order by date fields, e.g.:
SELECT *
FROM table
WHERE date > [yourDate]
ORDER BY date [DESC | ASC]
Your second requirement contradicts with the first one.
If you store your date in dd-mm-yyyy format, you'll be unable to sort your dates.
So - yes, you have to "explode" the dd-mm-yyyy date in PHP or format it any other way. That's not a big deal though. Everyone does it.
If you have a field of type 'datetime' you can use the MySQL-Command: FROM_UNIXTIME(%d) for conversion. 'order by' should be no problem.
Store the date in default format that is yyyy-mm-dd
when you want to display in front end
use the following query to
select otherFields, date_format(dateField,'%d-%m-%Y') from tableName;
For ordering by date
SELECT * FROM tbl
ORDER BY date DESC