I'm using the date plugin for Template::Toolkit (Template::Plugin::Date), it works well with datetimes (yyyy-mm-dd hh:mm:ss) pulled straight out of MySQL, but it will not work with dates (yyyy-mm-dd).
What's the simplest way to get date.format to accept dates (without modifying the sql query)?
Thanks.
[% date.format(yourDateColumn _ ' 00:00:00', '%d %b %Y') %]
Related
I have a dateformat but to display on front end I would like to display the data like so.
SELECT STR_TO_DATE('5,2013','%m,%Y');
The result I would like to generate is 'May 2013'.
Why are you storing dates as string values? Mysql has dedicated data types for date and time values: https://dev.mysql.com/doc/refman/5.7/en/date-and-time-types.html
When using date, you can easily use DATE_FORMAT and set %m,%Y as formatting (second argument).
SELECT replace(date_format(str_to_date('5,2013','%m,%Y'),'%M-%Y'),'-',' ');
As to the format just read the docs: https://dev.mysql.com/doc/refman/8.0/en/date-and-time-functions.html#function_date-format. You need an uppercase M for the month name. And use DATE_FORMAT to get from a date to a string.
SELECT DATE_FORMAT(DATE '2013-05-01', '%M %Y');
Assuming that you have 5,2013 stored in your database, you need to use DATE_FORMAT after parsing the string:
SELECT DATE_FORMAT(STR_TO_DATE('5,2013','%m,%Y'), '%b %Y')
Why? Because it seems you don't have a date type stored in the database. So you parse it to date using STR_TO_DATE. This give you the default date format. DATE_FORMAT let you apply other formattings on it.
All avaliable formatting values are documented here: https://www.w3schools.com/sql/func_mysql_str_to_date.asp
In general, I would recommend to think about storing date objects instead of custom date strings like 5,2013. This avoids those castings, because you could directly use DATE_FORMAT. It also has benefits on filtering/ordering and performance. Using date types, you could easily sort by it or filter e.g. everything in month X.
I don't say its not possible with custom strings like 5,2013 but would be more complex and could result in bad performance if the db grows.
You can use the functions:
str_to_date() to convert the string (after concatenating the prefix '1' to your string) to a valid date and then
date_format() to reformat the date:
SELECT date_format(str_to_date(concat('1,', ?),'%d,%m,%Y'), '%b %Y');
Replace ? with your string.
See the demo.
Result:
May 2013
I want to get time from mysql dd/mm/YYYY H:M:S format.
I have tried,
SUBSTRING_INDEX(field, 'delimiter', index)
but am looking for a better solution.
have tried, DATE_FORMAT(field, "%H:%i:%s") but it returns NULL because my date format was not native (YYYY-mm-dd)
it was 02/05/2019 19:38:27
How to get time from this above format in a better way?
NOTE: I am storing date like above.. this fetching form SQL Server
I guess you can first use STR_TO_DATE followed by CAST(... AS time). Casting instead of formatting allows you to use the result in date/time calculations.
SELECT CAST(STR_TO_DATE('02/05/2019 19:38:27', "%d/%m/%Y %H:%i:%s") AS TIME)
Ideally you should teach SQL Server to export dates in yyyy-MM-dd hh:mm:ss format.
This is how i Resolved,
TIME(STR_TO_DATE(d.in_punch, "%d/%m/%Y %H:%i:%s"))
also as per #Salman A
CAST(STR_TO_DATE('02/05/2019 19:38:27', "%d/%m/%Y %H:%i:%s") AS TIME)
this also worked.
is there mySQL function to convert a date from format dd.mm.yy to YYYY-MM-DD?
for example, 03.09.13 -> 2013-09-03.
Since your input is a string in the form 03.09.13, I'll assume (since today is September 3, 2013) that it's dd.mm.yy. You can convert it to a date using STR_TO_DATE:
STR_TO_DATE(myVal, '%d.%m.%y')
Then you can format it back to a string using DATE_FORMAT:
DATE_FORMAT(STR_TO_DATE(myVal, '%d.%m.%y'), '%Y-%m-%d')
Note that the year is %y (lowercase "y") in STR_TO_DATE and %Y (uppercase "Y") in DATE_FORMAT. The lowercase version is for two-digit years and the uppercase is for four-digit years.
Use
SELECT CONCAT(
'20',
SUBSTR('03.09.13', 7, 2),
'-',
SUBSTR('03.09.13', 4, 2),
'-',
SUBSTR('03.09.13', 1, 2))
Fiddle demo.
More about formats you can read in the corresponding manual page.
Tip: if this is about conversion value from non-datetime field - better to use DATE/DATETIME data type instead. However, this is a bad idea to operate with dates via string functions. Above there is a nice trick with STR_TO_DATE (will not repeat that code, updated to fit better)
Dates are stored using an internal format. You can use the function date_format() to convert it to a string using a variety of formats. For yours in particular:
select date_format(`date`, '%Y-%m-%d')
In one of my Mysql database table the dates are stored in the format 31-Jan-05.
I'm trying to convert this format to 2005-01-31 before inserting them in other tables.
I've tried in this way str_to_date(exam_date, '%d%M%Y'), but i encounter the following error
Incorrect datetime value: '31-Jan-05' for function str_to_time
Can't i change the date format from 31-Jan-05 to 2005-01-31 using str_to_date?
Thanks in advance.
Yes. But you have two problems.
The second parameter is the current date format. (i.e. of the string)
You need to have the proper format (i.e. %b instead of %M).
Read the docs the for str_to_date().
str_to_date(exam_date, '%d-%b-%y')
Note: If you don't have a zero padded day, then you need to use %e instead of %d.
I have a database full of dates that are in the format: MM/dd/yy. For example, today's date (November 4, 2011) is saved in the database as: 11/04/11. I'm having trouble with date ranges since my dates aren't formatted as yyyy/MM/dd (example: 2011/11/04). I don't have a way to change the way the database is populated, so I need to account for the date formatting differences within my MYSQL queries (via VB.NET). Here is my query (it doesn't work well because the dates are in the incorrect format):
SELECT CMP_DATE FROM my_data WHERE OBJ_DATE >= '1994/01/01' AND CMP_DATE <= '2011/11/04'
Is there anyway to reformat the dates within the query? Thank you.
The function you need is STR_TO_DATE:
SELECT CMP_DATE
FROM my_data
WHERE STR_TO_DATE(OBJ_DATE, '%d/%m/%y') >= '1994-01-01'
AND STR_TO_DATE(CMP_DATE, '%d/%m/%y') <= '2011-11-04'
#Piskvor has a good point, too, you should consider interpreting the 2-digit year yourself, instead of letting mysql perform some arbitrary conversion.