I hope you might be able to give some advice. I'm trying to create a table within SQL Server 2008 and I need to update my DateTime column to a different format.
CREATE TABLE #History (Tag nvarchar(512), User nvarchar(40), DateTime datetime, Quality int)
However I need to make the DateTime column return a DateTime value in the following format:
yyyy-MM-dd THH:mm:ss
Thanks in advance for any advice you can give.
There's no dateformat there's only the binary data!
Your date data is persisted as bunch of 0 and 1 and got no format at all.
when you retrieve that data, let's say in a select the query analyzer ill show you a representation of that data, by default a ISO formated datetime.
If anything consuming that result set needs a specif date format you can use cast/convert or set dateformat (and language) to achieve that.
See Damien comment for a good example.
Related
I have a table in SQL database in which there is an NVARCHAR(MAX) column. In it, the data is stored as 'Datetime1&Datetime2&Datetime3&Datetime4...'(& separated dates. I know this is not correct way to store data but I have to support an older system).
Now the issue is that this table is used in multiple sites and hence the data coming in this column could come in different formats. Means, for one site, the datetime could be in the format '22-06-2015 13:00:00' and for some other site, the datetime could be in the format '2015-06-22 13:00:00' or '2015-22-06 13:00:00'.
I have to break the data from this column and store individually each value as a datetime in a new row in another table. This has to be datetime only as I need to do some date operations like comparison, Datediff, Dateadd etc.
So, in my Stored Procedure, if I select value as convert(datetime,[date],121), then it gives error if the string is in any other format than 121(yyyy-mm-dd hh:mm:ss.mmm).
So how can I address this problem that this datetime string could be converted to actual datetime without any issue of a particular format or system format?
I have a Mysql 5.5 and a table with a column as follow:
`VERSION_TS` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP
but i'm having difficulties lately i'm getting this exception:
Incorrect datetime value: '1998-03-20' for column 'VERSION_TS' at row
1
when trying to enter values to the table, values of type Date, using mySql MakeDate().
Now, i can't change the function that return Date, but i can change the column to Date, but then i'll lose the default value. i've tried a couple of things, and then checked the web, and from what i understand in Mysql 5.5 there is no way to do it, but i could be wrong, so i came here to ask:
Is there a way that i can change the column to a Date and still have
a default value?
Also, is there a better way to do approach the problem?
I think the documentation is quite clear on this point:
TIMESTAMP and DATETIME columns can be automatically initialized and
updated to the current date and time (that is, the current timestamp).
So, this does not apply to DATE. However, you could create a view that does what you want:
create view v_table as
select t.*, date(version_ts) as version_date
from table t;
if the function which returns date is written in php then after receiving the date value you can do this:
$date = new DateTime('2006-12-12');
echo date_format($date,'Y-m-d H:i:s');// this you can store in mysql table.
if not same kind of approach you can apply in the respective language to do the job.
OR work with view as Gordon Linoff mentioned.
For "date1" attribute of my table I am trying to insert date of the format
YEAR-MONTH-DAY HOUR:MIN:SEC
Do I have ot define this format in the schema?
All I have done is
date1 DATE NULL
I know I can use DATE_FORMAT(), but I think only for retrieving/querying purposes.
What about recording data in the table?
if you are trying to insert a date with the time you need to instantiate it with datetime
date1 DATETIME NULL
SEE DOCS
alternatively you can store it as a TIMESTAMP. both store in that format
Your schema is fine (though you'll need DATETIME if wanting to preserve the time component), there aren't formatting options for how a DATETIME type is stored.
As long as the data you're inserting has a valid datetime format (the one you posted is fine) then you don't need to do anything else. Some non-standard formats will require a fix prior to insert.
The DATE_FORMAT() function is for displaying a DATE/DATETIME in a chosen format, but how the data is stored is defined solely by the data type.
I hope you can understand my question from the title.
I have a days.csv file, which includes the following tablenames
meter_id,date,meterstand
Which stores data like this:
1122,15/03/2013,458
The importing goes fine, but once imported the data types aren't good. The meter_id gets converted to an INT, which is fine. But the date gets converted to VARCHAR and the meterstand gets converted to decimal(9,4). I want the date table to be DATE and the meterstand to be an INT as well. Is there a quick fix for this? I have to run queries based on dates, which would be a lot easier if the date was actually a DATE type.
Thanks in advance.
I am inserting date from Android app in this format 2013-11-30T00:00:00.000+01:00 but when I see the stored data, it shows like this: 2013-11-30 00:00:00.
I tried different structures - timestamp and datetime, it's always the same. Why is it changing, or what am I doing wrong? Thanks
If you check out the reference guide for The DATE, DATETIME, and TIMESTAMP Types, you'll see both DATETIME and TIMESTAMP store the data in the format YYYY-MM-DD HH:MM:SS.
If you want to store it in the original format then you can use CHAR instead.