how to check date count in mysql

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Hi
I want to check whether a person has applied for leave today for that i am passing DateTime.Now as parameter but i am getting null as result but there records already exists in the table how to check it?

Posted 31-Jan-12 0:16am

Shashwath7

Updated 31-Jan-12 0:34am

Michel [mjbohn]

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SARAVANAKUMAR.M · Answer 1 · 2012-01-31T00:35:00

Solution 1

Hi Shashwath,

You need to pass the Parameter value as System.DateTime.Now instead of datetime.now and then in Database you just try the Below Query it will Work,

select Count(*) from Table_Name where Convert(NvarChar(15),LeaveDate,103)=Convert(NvarChar(15),@Parameter_Value,103)

Posted 31-Jan-12 0:35am

SARAVANAKUMAR.M

vjdeeds · Answer 2 · 2012-01-31T02:39:00

You are getting the null value because you are not getting a match in the table.
Since,DateTime.Now.ToString() gives the output in the format "dd/MM/yyyy hr:min:sec". Which includes the time(hr:min:sec). So to check the date of the leave. You only need to send the (dd/MM/yyyy) part of today's date.
Which you can achieve by using this code

DateTime dtm = DateTime.Now;
string date = dtm.ToString("dd/MM/yyyy");

Pass this 'date' as parameter.
Next in the database, you would need to check the leave date as

SQL

select CONVERT(VARCHAR(10),leaveDate, 103) as  RequestedDate from Table_Name

It will give you the value in the format(dd/MM/yyyy).

Hope this solves your issue.
Thanks!!