I have a property on an class that is of the .Net type DateTime. It is attempting to save into a table in SQL Server 2008 with a type of DATETIME. I am receiving a Database Error when I attempt to save a new record to the table from my .Net service.
When I look at SQL Server Profiler and see the call to the Stored Procedure that saves to the table, the property is a string: '2014-09-04 23:08:18.0500000'. When I truncate this string to just milliseconds the Stored Procedure call succeeds. The conversion of my .Net DateTime property to this string all happens under the hood and I have no control over that.
I do not need the full precision that I am seeing in the string, but it is important to keep milliseconds. I would rather not change my table column to a data type of DATETIME2. How can I remove the extra precision from the .Net DateTime property?
DateTime dateTime;
dateTime.ToString("yyyy-MM-dd HH:mm:ss.fff");
Please have #Tanner reply and mark that as an answer if correct as I believe he is correct in his comment above. Be careful to check for NULL on DateTime as you cannot convert to formated string if no data exists.
Below explains the range of DATETIME field in SQL Server.
http://msdn.microsoft.com/en-us/library/ms187819.aspx
Related
I am using C# and MySql. I have a requirement where I need to save DateTime.MaxValue to one of the column.
ADO.NET code gives me below value for DateTime.MaxValue
12/31/9999 11:59:59 PM
When I save this in mysql, I see that the value for that datetime(3) column is saved as:
0000-00-00 00:00:00.000
Sample ADO.NET Code
DateTime time = DateTime.MaxValue;
sqlCommand.Parameters.AddWithValue("Expires", time);
sqlCommand.ExecuteNonQuery();
DataType of the column is datetime(3)
I still cannot figure it out why DateTime.MaxValue is saved as 0000-00-00 00:00:00.000
Any thoughts around this?
A DATETIME column can store values up to '9999-12-31 23:59:59'. DateTime.MaxValue is actually 9999-12-31 23:59:59.9999999. When you try to insert it, the fractional seconds overflow the maximum size of the field.
Normally (in STRICT mode), MySQL Server would issue a datetime field overflow error. But if you're running your server in ANSI mode, the overflow is silently converted to the "invalid" date time value 0000-00-00.
One way to fix this problem is to use STRICT mode in your MySQL Server.
Another way is to specify the column type as DATETIME(6), which allows the fractional seconds to be stored.
A third way is to truncate the fractional seconds from your DateTime objects in C# before inserting them in the database.
Maybe some trigger prevents from saving such a high date to your column?
Have u tried inserting that date from SQL query ?
I did some tests in Oracle DB, and all went smoothly.
It shouldnt be different in mysql ...
I've been looking for a solution to this for hours. The problem I have having is that I have an SQL table which is storing dates as datetime DATATYPES, but when I try to pass a DateTime field to this table with Entity framework It's of datetime2 DATATYPE. All the solutions I found is using strings to format the date but this isn't working for me since I am using Entity Framework, and Entity Framework is expecting a DateTime type variable to be passed to the model and NOT a string.
result.SurveyDate = Convert.ToDateTime(CurrentSurveryDateValue);
I can't do something like the above because this is sending a datatime2 DATATYPE to the my model result. Which throws this error...
The conversion of a datetime2 data type to a datetime data type resulted in an out-of-range value
Now I can't pass a string formatted to be of datetime format either because it throws a compile time error stating I can only pass DateTime types and not string...
How can i resolve this without changing the date datatype within my SQL table?
I have in SQl Server table with col timestamp.
Now i use Entity Framework 6, and get in model field byte[].
Now what I should do to save current date to this field, and what i should do to print in view this date like(dd/mm/yyyy hh/mm/ss)
I find this:
How to convert byte array (SQL-server Timestamp) to DateTime (C#)?
and I felt that I should not use tiemstamp. What is a correct way to solved it?
The timestamp data type in SQL Server is a misnomer. It is not related to date/time at all so it cannot be converted to a .NET DateTime. The SQL Server timestamp data type is actually a binary value that changes every time the row is updated, intended to be used for optimistic concurrency checking. The use of the timestamp data type name is deprecated in favor of the alias rowversion in later SQL Server versions.
You need to use SQL Server data type datetime, datetime2, datetimeoffset, or time to store temporal values in SQL Server.
In my database I have used Timestamp in each table to see when data was inserted.
It stores data in byte[] of 8 byte.
Now I want to read that time using C#.
How can I get DateTime object from Timestamp which is byte[]?
SQL Server's TIMESTAMP datatype has nothing to do with a date and time!
It's just a binary representation of a consecutive number - it's only good for making sure a row hasn't change since it's been read.
In never versions of SQL Server, it's being called RowVersion - since that's really what it is. See the MSDN docs on ROWVERSION:
Is a data type that exposes automatically generated, unique binary numbers within a database. rowversion is generally used as a mechanism
for version-stamping table rows. The
rowversion data type is just an incrementing number and does not
preserve a date or a time. To record a date or time, use a datetime2
data type.
So you cannot convert a SQL Server TIMESTAMP to a date/time - it's just not a date/time.
But if you're saying timestamp but really you mean a DATETIME column - then you can use any of those valid date formats described in the CAST and CONVERT topic in the MSDN help. Those are defined and supported "out of the box" by SQL Server. Anything else is not supported, e.g. you have to do a lot of manual casting and concatenating (not recommended).
The format you're looking for looks a bit like the ODBC canonical (style = 121):
DECLARE #today DATETIME = SYSDATETIME()
SELECT CONVERT(VARCHAR(50), #today, 121)
gives:
2011-11-14 10:29:00.470
SQL Server 2012 will finally have a FORMAT function to do custom formatting......
I have a stored procedure which input is from the type datetime. i.e. I transfer the input
2014-01-13T16:55:03.370 ,while running the stored procedure from the sql server.
Now I want to execute a stored procedure from the application.So I tried to use parameter having System.DateTime type.Looks like it is not corresponds to sql datetime.
Which type should I use for that?
UPD.
I didn`t get the answer for my question. So I`ll try to make my question more clear.
In SQL SErver database tables the values of the type datetime are saved.I am writing a stored procedure which looks for this values .I mean I need to get a parameter from the user of the for yyyy-mm-ddThh:mm:ss:.mmmm
from MSDN:
GetDate() is a inbuilt function in sql, for c# you can use follwing:
DateTime CurrentDate;
CurrentDate = Convert.ToDateTime(DateTime.Now.ToString("dd-MMM-yyyy"));
I guess you can pass this variable through to the procedure call parameters?
or, search the site again and read: Function that creates a timestamp in c#
Here you can find samples on data time conversions between SQL and C#, depending
on the date data types you use