Good day , i'm kind of struggling at the moment and this might be really easy for you , but i'm really new in sql .
I'm trying to change the format of a date from 2021-10-05 to Tue-05-Oct . in a htm file using SQL
I'm struggling cause i do not really understand how to use the convert or formatdate with an object (Select date.birthday as object) .
I'm a bit lost :(
You can format the date using the MySQL DATE_FORMAT() function.
For example:
SELECT DATE_FORMAT(`myDate`, '%a-%d-%b') as textDate from `myTable`
which will return a date in the form Tue-05-Oct.
You could also do this directly in crystal reports by creating a formula field as follows.
totext({ReplaceWithDataFieldToFormat},"ddd-dd-MMM")
Related
I have a large dataset with employees' time entries. The current date format is MM/dd/yyyy. However, I need to convert all the dates into yyyy-MM-dd format.
I have tried the following:
Update human_resources.timekeeping
Set Actual_Date = str_to_date(Actual_Date,'%d-%m-%Y');
Got the errror messsage Error Code: 1411. Incorrect datetime value: '' for function str_to_date.
My SQL version is 5.7.18-log.
I tried to view SQL mode using SELECT ##sql_mode; and I got NO ENGINE SUBSTITUTION.
I have tried to retrieve the value like shown below and it was working fine.
Converting varchar mm/dd/yy to date format yyyy-mm-dd
However, updating the data would not work. I need to update the actual records, not insert new records.
Hope someone can help me regarding this. Thank you in advance!
EDIT: The data type for Actual_Date is VARCHAR.
Apologies if my explanation may be a bit confusing. But I am using this data set to display and filter time entries in a gridview. When I am filtering dates, say for example (01/15/2022-01/25/2022), data from 2021 is also being displayed. When I tried to manually change the format of some of my data in sql to yyyy-MM-dd, my code seemed to be working fine. The problem is there are a lot of data in this table, which is why manually updating the format is impossible. What is the first thing that I need to do? I'm sorry this is all still a bit confusing for me.
My apologies if you have already taken the following things into consideration but I thought them worth mentioning.
Given that you say this is a "large dataset" I assume this is a table that is currently in use. Does the existing application rely on the Actual_Date being in that string format? Does it rely on a fixed number of columns in the table? Some poorly written applications can be very brittle when it comes to changing underlying data structure.
You may want to consider creating a copy of the current table, modifying the structure of the copy, and replacing the original with a view with the same columns and formats as the original. This way you get improved data but reduce risk to existing application.
In the title and first line of your question you state that the current format is MM/dd/yyyy
Update human_resources.timekeeping Set Actual_Date = str_to_date(Actual_Date,'%m/%d/%Y');
Your separator is / not -
%d-%m-%Y >> %d/%m/%Y
Asking for any ideas to convert this kind of date in SQL from May-15-2020 18:03 to 'yyyyMMddHHmiss' or 'yyyyMMdd'.
I am trying this query
select from_unixtime(unix_timestamp('May-15-2020 16:03', 'MM-dd-yyyy
HH:mi'), 'yyyyMMdd') from dual
but it wont work.
Use the right right function STR_TO_DATE, and use a format that matches your date rather than something scraped from a previous answer/blog.
Reference manuals of date and time functions are very useful for solving these basic problems.
I'm using Access DB 2007 - 2010; I've tried to import many CSV files but the timestamp column keeps failing to import correctly.
So I linked all of the CSV's to an Access DB and I'm trying to query all of the tables.
I'm trying to extract the year and day of the year from the time stamp (which is currently a string)
I'm trying to combine the Format with datepart functions and it keeps failing. (it just says error in the table)
The format function by itself works but I can't combine it with anything.
I'm basically trying to do this:
select datepart("y", Format(gmt, "dd-mmm-yyyy hh:nn:ss")) as DOY from Table1;
but it fails. I've also tried CDate and DateValue in different combinations but it all fails.
Does anyone know how to get this to work?
UPDATE
The format function isn't doing anything. The text remains the same no matter how I try to format it.
Here's a datetime sample: 05-Dec-2008 13:40:01.955
Access can't cope with the milliseconds in your date strings.
Use Left() to exclude them and feed the resulting substring to CDate().
SELECT CDate(Left(gmt, 20)) AS date_from_string
FROM Table1;
Once you have a valid Date/Time value, you can use Year(<Date/Time value>) or DatePart("yyyy", <Date/Time value>) to extract the year. And DatePart("y", <Date/Time value>) will give you the day of the year.
Just solve this issue, here is my code for your reference:
update tablename
set date=cdate(format(left(gmt,4)&"-"&right(gmt,2),"yyyy-mm"))
I've got this as the select part of my query:
SELECT cast(cast(exp_channel_titles.edit_date as char(14)) as datetime) AS Edit_Date
That takes data from a db in this format 20130501092128 and returns it in this format 2013-05-01 09:21:28
I can only assume it is some kind of magic as i don't fully understand how this works tbh.
But, i need to change the format of the date that it spits out to this format: %d/%m/%Y %k:%i:%s
I can honestly say i have no idea how to do this in that query, i've tried adding it as a param to datetime (is that even a mysql function?!?) but no joy and many other poor attempts that i wont go into.
If anyone can help, i'd be hugely grateful!
MySql automatically converts 20130501092128 to a date and time field, even if it is a VARCHAR or a INT, and you can just use this:
SELECT DATE_FORMAT(exp_channel_titles.edit_date, '%d/%m/%Y %k:%i:%s')
Please see fiddle here.
You can change output format using DATE_FORMAT() function from MySQL. Here is the documentation post about it.
https://dev.mysql.com/doc/refman/5.5/en/date-and-time-functions.html#function_date-format
You can change the output format into whatever format you want, but if you recieve that data into an application, modifies it and return that data to server (editing a row for example). Remember to reformat it into a valid date for MySQL.
If you dont know how to do it, just have to do this into your query:
SELECT DATE_FORMAT(cast(cast(exp_channel_titles.edit_date as char(14))
as datetime), '%e/%m/%Y %k:%i:%s') AS Edit_Date
I have a query from within my vb.net code which searchs for a record by date. The date being entered via the code is in format dd/mm/yyyy, i need to search in the database using yyyy/mm/dd?
Ideally i thought there may just be a function within MySQL which will convert this. If not in vb.net to convert the string 01/01/2011 to 2011/01/01?
Thanks
Take a look at str_to_date() function
select str_to_date('01/01/2011','%d/%m/%Y')
So, your search becomes
select * from table where date_field = str_to_date(your_variable,'%d/%m/%Y')