Solved

Match date only with datetime.date in sql server, c#

Posted on 2011-09-19
10
663 Views
Last Modified: 2012-05-12
trying to match the date only in Convert(arrivedtime) with datetime.date in sql server, c#

but couldnt getting any record,
string strSQL = "select sa1.arrivedtime as arrivedtime, sa1. from traineemodule tm " +
                "JOIN StudentAttendanceC sa1 WHERE CONVERT(VARCHAR(10), arrivedtime,111) = '" + dtArrivedTime.Date + "'";

eg.
---

select sa1.arrivedtime as arrivedtime from traineemodule tm 
                JOIN StudentAttendanceC sa1 ON sa1.id = tm.said WHERE CONVERT(VARCHAR(10), arrivedtime,111) = '09/01/2011';

Open in new window

0
Comment
Question by:doramail05
10 Comments
 
LVL 15

Expert Comment

by:Haris Djulic
ID: 36558715
can you debug to see in what format the dtArrivedTime.Date is displayed i.e. how the date is passed to server?
0
 
LVL 44

Expert Comment

by:AndyAinscow
ID: 36558766
Try converting both dates to the same format, something like the following:

JOIN StudentAttendanceC sa1 WHERE CONVERT(VARCHAR(10), arrivedtime,111) = '" + CONVERT(VARCHAR(10), dtArrivedTime.Date, 111) + "'";

Note this is air code, you will probably have to modify the quote marks to make it fit
0
 
LVL 1

Author Comment

by:doramail05
ID: 36558872
guess somehow that might not be working, coz its coming from a parameter the dtArrivedTime.Date


public static DataTable getStudentAttendance_ByArrivedTime(DateTime dtArrivedTime)
    {
        string strConnString = connstring.getIDashString();

        using (SqlConnection sqlconn = new SqlConnection(strConnString))
        {
            DataTable dt = new DataTable();
            string strSQL = "select sa1.arrivedtime as arrivedtime, sa1. from traineemodule tm " +
                "JOIN StudentAttendanceC sa1 WHERE CONVERT(VARCHAR(10), arrivedtime,111) = '" + dtArrivedTime.Date + "'";
            SqlDataAdapter adpt = new SqlDataAdapter(strSQL, sqlconn);
            adpt.Fill(dt);

            if (dt.Rows.Count > 0)
            {
                return dt;


            }

        }

        DataTable dt01 = new DataTable();
        return dt01;
    }

Open in new window

0
Comprehensive Backup Solutions for Microsoft

Acronis protects the complete Microsoft technology stack: Windows Server, Windows PC, laptop and Surface data; Microsoft business applications; Microsoft Hyper-V; Azure VMs; Microsoft Windows Server 2016; Microsoft Exchange 2016 and SQL Server 2016.

 
LVL 44

Expert Comment

by:AndyAinscow
ID: 36558884
You NEED to make both dates in the same formatted string otherwise it won't work correctly.
0
 
LVL 8

Expert Comment

by:gena17
ID: 36558888
I guess SQL CONVERT(VARCHAR(10), arrivedtime,111) format is "yyyy/MM/dd", and not "MM/dd/yyyy".

That said, try formatting C# to the same format:

string strSQL = "select sa1.arrivedtime as arrivedtime, sa1. from traineemodule tm " +
                "JOIN StudentAttendanceC sa1 WHERE CONVERT(VARCHAR(10), arrivedtime,111) = '" + dtArrivedTime.Date.ToString("yyyy/MM/dd") + "'";
0
 
LVL 1

Author Comment

by:doramail05
ID: 36558896
if like that,

string strSQL = "select sa1.arrivedtime as arrivedtime, sa1. from traineemodule tm " +
                "JOIN StudentAttendanceC sa1 WHERE CONVERT(VARCHAR(10), arrivedtime,111) = '" + dtArrivedTime.Date.ToString("yyyy/MM/dd") + "'";

somehow i tried the sample data like 01-09-2011,  (or 09-01-2011 or 09-01-2011 or 01-09-2011)

select sa1.arrivedtime as arrivedtime from traineemodule tm
                JOIN StudentAttendanceC sa1 ON sa1.id = tm.said WHERE CONVERT(VARCHAR(10), arrivedtime,111) = '09/01/2011';

it could retrieve any record, but there is record in db.
0
 
LVL 1

Author Comment

by:doramail05
ID: 36558899
it couldnt i mean
0
 
LVL 44

Expert Comment

by:AndyAinscow
ID: 36558913
What does the following give:

SELECT CONVERT(VARCHAR(10), sa1.arrivedtime,111) as xxx;

That should show you what the result of the CONVERT is.
0
 
LVL 143

Expert Comment

by:Guy Hengel [angelIII / a3]
ID: 36558920
you may want to read this article to learn about how to handle date/time correctly in databases:
http://www.experts-exchange.com/A_1499.html
0
 
LVL 3

Accepted Solution

by:
Srm74 earned 500 total points
ID: 36558931
This works for me :-)
I made a Store function, having a datetime as a parameter, feeding it with at Standard C# DateTime obj.
I can post that if you like...

A rewrite to your parameternames is something like..


string strSQL = "select sa1.arrivedtime as arrivedtime, sa1. from traineemodule tm " +
                "JOIN StudentAttendanceC sa1
WHERE
dateadd(month,(((Year(arrivedtime))-1900)*12)+Month(arrivedtime)-1,Day(arrivedtime)-1) = dtArrivedTime


0

Featured Post

Ransomware-A Revenue Bonanza for Service Providers

Ransomware – malware that gets on your customers’ computers, encrypts their data, and extorts a hefty ransom for the decryption keys – is a surging new threat.  The purpose of this eBook is to educate the reader about ransomware attacks.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Calculating holidays and working days is a function that is often needed yet it is not one found within the Framework. This article presents one approach to building a working-day calculator for use in .NET.
Use this article to create a batch file to backup a Microsoft SQL Server database to a Windows folder.  The folder can be on the local hard drive or on a network share.  This batch file will query the SQL server to get the current date & time and wi…
With Secure Portal Encryption, the recipient is sent a link to their email address directing them to the email laundry delivery page. From there, the recipient will be required to enter a user name and password to enter the page. Once the recipient …

735 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question