I have a database table--> date field and the date format is yyyy-mm-dd
if i input in anouther format then field show 0000-00-00
what is the problem and how i can overcome this whereas i have use no form encode method??
I would recommend using int(32) for your date field and storing unixtime. That way you can format your date into any type of string you want to display.
UNIX_TIMESTAMP()
It's called and the you can do this in your query.
INSERT INTO `table` (`date`) VALUES (UNIX_TIMESTAMP());
You can parse unixtime in any language, and many (like PHP) have built it parsing of unixtime.
date("Y-m-d", $row["time"]); // YYYY-MM-DD
Insert dates in YYYY-MM-DD (ISO format) and when retrieving the date, you may convert it to any format you like using:
DATE_FORMAT()
Reference:
DATE_FORMAT(date,format).
Related
I need to convert varchar string data to time format in mysql.
For example,
I have a varchar column in table which stores time. The accepted values should be like 9:30 AM or 1200 PM. But currently it has either blank values or it has values like 9.30am or 12:00
There are many records like this, so cannot update manually.
Ithere any work around or function or procedure to do so?
please help.
Thanks
You can use the STR_TO_DATE() MySQL function to convert any string to a date.
Additionally you can use TIME() to extract the time portion of a datetime. A combination of both function is used to convert an arbitrary date string to a datetime and then you can extract the time portion from it as a valid MySQL TIME.
By default MySQL functions follow standard format but custom format can be specified and if your values don't use the international formats you'll need to check with the documentation and provide the format your system is using.
I got in my table two types:
hour_Event in type date
date_Event in type datetime
I would like hour_Event to be formatted to hh:mm
and date_Event to be dd/mm/yyyy
I use PHPMyAdmin and im new with MySQL so I dont know how to change the format and for what.
How do I do it?
**DATE_FORMAT(hour_Event,'%h:%i')** will give you hour_Event in hh:mm
and
**DATE_FORMAT(date_Event,'%d/%m/%Y')** will give you date_Event in dd/mm/yyyy
You could change the format using php before you insert data or after retrieving themfrom your database according to your needs.You could use DateTime / strtotime() & date(). In most cases a single timestamp field in your table is enough for an event.
Have a look here:
Convert one date format into another in PHP
Also you could format your field according to your needs with mysql for example:
DATE_FORMAT(tables.field, '%d-%m-%Y %H:%i:%s') AS 'new_name'
Have a look about it here:
http://dev.mysql.com/doc/refman/5.0/en/date-and-time-functions.html#function_date-format
How to Create a colummn DATE with format DD/MM/YYYY?
Mysql come for defaut with this formar YYY/MM/DD.
I need isert via HTML5 date Day/Month/Year, for this format come in DD/MM/YYYY
On your insert/select statements, you can convert MySQL Date Functions:
SELECT ... DATE_FORMAT(field,'%d/%m/%Y');
INSERT ... STR_TO_DATE('formatteddate','%d/%m/%Y')
you can check your js file if any,corresponding to date and change format to MySQL database format
I guess you could save it as a varchar, but that's messy. Your best option is to have MySQL save the date in the default format, then simply format the date to DD/MM/YYYY upon retrieval.
How do I import and preserve date format fields such as "8/21/2012" from Excel to MySQL?
I am using MySQL Workbench and the Excel MySQL Excel data transfer plug in. When I select the Excel data I want to import into MySQL, I get a window where I declare variable types for all fields. All fields and declarations work as expected except for date and time fields. Both date and time switch from 8/21/2012 to a number like 398475 etc. How can I import these fields into MySQL by preserving the dashed mm/dd/yyyy format? I assume the same procedure will work for time as well.
Alternatively, is there a way to convert the serialized datetime value (a float, representing the number of days since 1/1/1900) back to mm/dd/yyyy in MySQL ?
Thank you!
You can convert your date cells into a MySQL supported format using the TEXT function.
=TEXT(A1,"YYYY-MM-DD")
This will convert a date in cell A1 to the yyyy-mm-dd format that the MySQL date field expects.
To get the serialized date format (say 36422) into a useful date format in MYSQL use the interval function added to the base date that Excel uses (which is actually 1900-00-00 but since that doesn't exist you will have to use 1900-01-01 which is why we subtract 2 from the date column)
`'1900-01-01' + INTERVAL(Your_Date_Column - 2)DAY`
You can convert your datetime cells into a MySQL supported format using the TEXT function
=TEXT(A1,"YYYY-MM-DD HH:MM:SS")
Simply use Date (java.util package) for this.
Date d=Date date=cell.getDateCellValue();
Now Use it as you want.
Does anyone know how to insert into column(of date type) date in the format of dd-mm-yyyy?
I'm using calendar, and it selects days like dd-mm-yyyy, but it can't be inserted because of the format that uses mysql by default (yyyy-mm-dd).
The problem is, that I need to compare dates that has been inserted by the calendar and the dates that has been automatically inserted with current_date function. Basicly I have column DoR (date_of_registration) and Status. I've made DoR of date type, and Status of varchar(). In the Status I use Calendar to insert the date. Thus, I've compared it anyway but it gives strange results. I guess it is not comparing correctly.
Any ideas?
Thanks
Convert the output from calendar into date format like this
$cal_date=17-08-2012;
$date=date('Y-m-d',strtotime($cal_date));
echo $date; //gives date as 2012-08-17
Now you can insert this date into mysql and do comparisons
select str_to_date('31-12-2012', '%d-%m-%Y')
See STR_TO_DATE
All you need are these two functions:
STR_TO_DATE()
and
DATE_FORMAT()
Please, always store dates as a DATE type in MySQL. If you need to select it in another form, use the correct string function DATE_FORMAT!
You don't need to insert database as dd-mm-yyyy. You have to user date format. If you are writing code in php you can parse date what every type you want
Select datetime for database. And insert date data date("Y-m-d H:i:s"); when you want to echo date different formats like
echo date('d-m-Y', strtotime('2012-08-17 19:00:00'));
There is also another way to store the date like, if you are choose that
`<input type="date" name="bdate" />
`
then it directly store the date in to database in yyyy-MM-DD Format.
Here my text field format is dd-mm-yyyy.
Here you don't have to convert the string using strtotime()