C# Parameterized Query With Null Values
Jul 19, 2005
Hello.
I have (2) related questions.
#1: I am using a paramterized query, but am unable to make it work if one of the values happens to be null.
if (Request.Form["txtLink1"] != "")
{
mySqlCmd.Parameters.Add(new SqlParameter("@link1",
SqlDbType.VarChar));
mySqlCmd.Parameters["@link1"].Value =
Request.Form["txtLink1"];
}
else
{
mySqlCmd.Parameters.Add(new SqlParameter("@link1",
SqlDbType.VarChar));
mySqlCmd.Parameters["@link1"].Value = null;
}
If txtLink1 happens to be empty, I want @link1 to enter null. The
column in the Sql Server allows for nulls, but I get an error message
that says no value was supplied. In short, how do I supply a null value
using a parameterized query?
#2: For debugging purposes, how can I view what my SQL string looks
like (with all the values entered) before it gets submitted to the
database? When I view the string, it still contains the placeholder
values (@link1) instead of the actual values.
Thanks in advance!
-Brenden
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Jul 28, 2006
I am hoping someone could help me understand why this is happening and perhaps a solution.
I am using ASP.NET 2.0 with a SQL 2005 database.
In code behind, I am performing a query using a parameter as below:
sql = "SELECT field_name FROM myTable WHERE (field_name = @P1)"
objCommand.Parameters.Add(New SqlParameter("@P1", TextBox1.Text))
The parameter is obtained from TextBox1 which has valid input. However, the value is not in the table. The query should not return ANY results. However, I am getting one single row back with null values for each field requested in the query.
The SQL user account for this query has select, insert, and update permissions on the table. The query is simple, no joins, and the table has no null values in any fields. If I perform the exact same query using an account with select only permission on the table, I get what I was expecting, no records. Then if I go back to the previous user account with more permissioins, and I change the query to pass the paramter this way:
sql = String.Format("SELECT field_name FROM myTable WHERE (field_name = {0})", TextBox1.Text)
I also get NO records retuned using the same criteria.
What is going on here? I would prefer to use the parameterized query method with the account having elevated permissions. Is there some command object setting that can prevent the null row from returning?
Thanks!
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Jul 18, 2006
Using c# in the compact framework, is there a way to do a parameterized query for counting the number of records where a specified column is null. I tried all of these, but none of them work:
cmd.Add(new SqlCeParameter("@IntColumn", SqlInt32.Null));
cmd.CommandText = "select count(*) from TableName where IntColumn is not @IntColumn";
cmd.Add(new SqlCeParameter("@IntColumn", DBNull.Value));
cmd.CommandText = "select count(*) from TableName where IntColumn is not @IntColumn";
cmd.Add(new SqlCeParameter("@IntColumn", SqlInt32.Null));
cmd.CommandText = "select count(*) from TableName where not IntColumn = @IntColumn";
cmd.Add(new SqlCeParameter("@IntColumn", DBNull.Value));
cmd.CommandText = "select count(*) from TableName where not IntColumn = @IntColumn";
cmd.Parameters.Add(new SqlCeParameter("@IntColumn", SqlDbType.Int32));
cmd.Parameters["@IntColumn"].Value = SqlInt32.Null;
cmdGetNumRead.CommandText = "select count(*) from TableName where IntColumn is not @IntColumn";
cmd.Parameters.Add(new SqlCeParameter("@IntColumn", SqlDbType.Int32));
cmd.Parameters["@IntColumn"].Value = SqlInt32.Null;
cmdGetNumRead.CommandText = "select count(*) from TableName where not IntColumn = @IntColumn";
cmd.Parameters.Add(new SqlCeParameter("@IntColumn", SqlDbType.Int32));
cmd.Parameters["@IntColumn"].Value = DBNull.Value;
cmdGetNumRead.CommandText = "select count(*) from TableName where IntColumn is not @IntColumn";
cmd.Parameters.Add(new SqlCeParameter("@IntColumn", SqlDbType.Int32));
cmd.Parameters["@IntColumn"].Value = DBNull.Value;
cmdGetNumRead.CommandText = "select count(*) from TableName where not IntColumn = @IntColumn";
cmd.Parameters.Add(new SqlCeParameter("@IntColumn", SqlDbType.Variant));
cmd.Parameters["@IntColumn"].Value = SqlInt32.Null;
cmd.CommandText = "select count(*) from Meter where IntColumn is not @IntColumn";
cmd.Parameters.Add(new SqlCeParameter("@IntColumn", SqlDbType.Variant));
cmd.Parameters["@IntColumn"].Value = SqlInt32.Null;
cmd.CommandText = "select count(*) from Meter where not IntColumn = @IntColumn";
md.Parameters.Add(new SqlCeParameter("@IntColumn", SqlDbType.Variant));
cmd.Parameters["@IntColumn"].Value = DBNull.Value;
cmd.CommandText = "select count(*) from Meter where IntColumn is not @IntColumn";
cmd.Parameters.Add(new SqlCeParameter("@IntColumn", SqlDbType.Variant));
cmd.Parameters["@IntColumn"].Value = DBNull.Value;
cmd.CommandText = "select count(*) from Meter where not IntColumn = @IntColumn";
Whenever I use a "is not" in the query I get an exception, otherwise it returns a count of 0 which is not accurate. Any help will be appreciated.
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Jan 25, 2008
I have a pivot transform that pivots a batch type. After the pivot, each batch type has its own row with null values for the other batch types that were pivoted. I want to group two fields and max() the remaining batch types so that the multiple rows are displayed on one row. I tried using the aggregate transform, but since the batch type field is a string, the max() function fails in the package. Is there another transform or can I use the aggragate transform another way so that the max() will work on a string?
-- Ryan
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Mar 18, 2008
I am trying to have a query with the option for items to be null. (So users don't need to fill in the other fields if they choose not too) SELECT Tickets.TicketID, Tickets.UserID, Tickets.SystemID, Tickets.Title, Tickets.Description, Tickets.Software, Tickets.Date, Systems.OS, OS.OS AS OstitleFROM Tickets INNER JOIN Systems ON Tickets.SystemID = Systems.SystemID INNER JOIN OS ON Systems.OS = OS.osIDWHERE (Tickets.Title LIKE '%' + @title + '%') AND (Tickets.Software LIKE '%' + @software + '%') AND (Tickets.Description LIKE '%' + @descrip + '%') AND (Systems.OS = @osid) OR (@osid IS NULL)This works when i give the LIKE values % as a parameter. So they can choose to search by title + software but not description or description and nothing else etc etc etc. The problem is, the osid. If I give it a value it works but if i try to do null, *. or % it always displays every item in the databse ignoring any of the previous like statements. Anyone have an idea?
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Nov 18, 2013
I have a grid with checkbox, where users can select multiple rows and edit at the same time and save it to the DB. Now I have used a Footer Template with textbox in the gridview. So if I want to put similar data's for some particular rows at the same time in the grid, I select the multiple rows and try to put values in the footer template textbox and when I click on save, it saves successfully.
UPDATE QUERY:
"UPDATE [Test] SET [Name]='" + Name + "',[Designation]= '" + Designation + "', [City]= '" + City + "' WHERE EmpID='" + EmpID + "'";
Now here is the challenge, but even when I enter null values in the footer template textbox it has to save with the old values of the rows and not null values. I tried it and couldn't make it happen. So anything like putting the case for each column and mentioning like if null accept the old value and not null accept new value.
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Jul 23, 2007
Hello,
I'm using the query wizard in VB.net to write a query for SQL CE. I want to replace null values with text. I expected the COALESCE function to do this but I get an error message saying its not a valid function. This is a sample.
Select COALESCE(table.Name,'No Name') as Name from table
Any help appreciated
Thanks
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Aug 2, 2006
I would like to populate a grid with data from 2 different tables.
Table1: [PK]id(int), name(nvarchar), areaID(int)
Table2: [PK][FK]areaID(int), areaDescription(nvarchar)
My cerrent query is:
SELECT Table1.id, Table1.name, Table2.areaDescription FROM Table1 INNER JOIN Table2 ON Table1.areaID = Table2.areaID
However, sometimes the areaID in Table1 will only be populated at a later stage and therefore will be NULL in Table1. Table2 is used as a lookup table when inserting into Table1. This query therefore ommits any records in Table1 which do not have an areaID. I would like to view ALL records(ones without an areaID as well) as they would be populated in the grid and selected to be updated on web forms because they are incomplete and then subsequently assigned an areaID.
Any help with this query would be much appreciated...
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Feb 23, 2007
I have a DTSX package which reads values from a fixed-length text file using a data reader and writes some of the column values from the file to an Oracle table. We have used this DTSX several times without incident but recently the process started inserting NULL values for some of the columns when there was a valid value in the source file. If we extract some of the rows from the source file into a smaller file (i.e 10 rows which incorrectly returned NULLs) and run them through the same package they write the correct values to the table, but running the complete file again results in the NULL values error. As well, if we rerun the same file multiple times the incidence of NULL values varies slightly and does not always seem to impact the same rows. I tried outputting data to a log file to see if I can determine what happens and no error messages are returned but it seems to be the case that the NULL values occur after pulling in the data via a Data Reader. Has anyone seen anything like this before or does anyone have a suggestion on how to try and get some additional debugging information around this error?
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Jan 29, 2008
When I try to add a parameter called findby to the order by part of a query like this:
dim q1 as string="select store+' '+customer+' '+left(customer,len(customer))" q1=q1+"+replicate('.',30-len(customer))+' '+cdate as a" q1=q1+" from tblcustomers" q1=q1+" where store='65' and customer like @lookfor" 'eventually want @findby where this says customer q1=q1+" order by @findby"
with command1.parameters: .Add(New SQLParameter("@lookfor", textbox1.text+"%")) .Add(New SQLParameter("@findby", dropdownlist2.text)) 'dropdownlist2.text="customer" which is the name of a column end with
I get this server error:
The SELECT item identified by the ORDER BY number 1 contains a variable as part of the expression identifying a column position. Variables are only allowed when ordering by an expression referencing a column name.
Are parameters not good for names of things in a query but ok for values of what those names represent? If not, what am I doing wrong?
Thank you very much.
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Feb 5, 2004
Can someone please help me with this parameterized query? Its is not working.
builder.Append("select datepart(dd, datetime) as 'Day', datepart(hh,datetime) as 'Hour', count(*) as 'Count' ");
builder.Append("from @table_name with (nolock) ");
builder.Append("where datetime > @date_time ");
builder.Append("group by datepart(dd, datetime), datepart(hh, datetime) ");
builder.Append("order by datepart(dd, datetime), datepart(hh, datetime");
dateTime = DateTime.Now.ToLongTimeString() + " " + DateTime.Now.ToLongTimeString();
cmd.CommandType = CommandType.Text;
cmd.CommandText = builder.ToString();
cmd.Parameters.Add("@table_name", tableName);
cmd.Parameters.Add("@date_time", dateTime);
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Mar 11, 2008
Hi,
I am new to Parameterize query ...
and i want to use above for inserting XML data and to retrive the same as it contains some special character so by using string it is changed.
plz give example or link
thanks
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Dec 9, 2013
I have SQL Server 2012 SSIS. I have Excel source and OLE DB Destination.I have problem with importing CustomerSales column.CustomerSales values like 1000.00,2000.10,3000.30,NotAvailable.So I have decimal values and nvarchar mixed in on Excel column. This is requirement for solution.However SSIS reads only numeric values correctly and nvarchar values are set as Null. Why?
CREATE TABLE [dbo].[Import_CustomerSales](
[CustomerId] [nvarchar](50) NULL,
[CustomeName] [nvarchar](50) NULL,
[CustomerSales] [nvarchar](50) NULL
) ON [PRIMARY]
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Mar 29, 2006
Hi
can somebody explain me how I can assign a NULL value to a datetime type field in the script transformation editor in a data flow task.
In the script hereunder, Row.Datum1_IsNull is true, but still Row.OutputDatum1 will be assigned a value '0001-01-01' which generates an error (not a valid datetime). All alternatives known to me (CDate("") or Convert.ToDateTime("") or Convert.ToDateTime(System.DBNull.Value)) were not successful.
Leaving out the ELSE clause generates following error: Error: Year, Month, and Day parameters describe an un-representable DateTime.
If Not Row.Datum1_IsNull Then
Row.OutputDatum1 = Row.Datum1
Else
Row.OutputDatum1 = CDate(System.Convert.DBNull)
End If
Any help welcome.
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Feb 4, 2007
can anyone show me where i've done wrong in my coding? because i can't seems to find the error. I've looked through forums and google but just can't understand what they are on about as i'm kind of a beginner. Please help me...thanks in advance...(i dont have any stored pocedure, just using a connectionstring called connectionstringnews)HERES THE ERRORParameterized Query '(@newsid nvarchar(4000),@author nvarchar(5),@date
datetime,@arti' expects parameter @newsid, which was not supplied.
Description:
An unhandled exception occurred during the execution of the current web
request. Please review the stack trace for more information about the error and
where it originated in the code. Exception Details:
System.Data.SqlClient.SqlException: Parameterized Query '(@newsid
nvarchar(4000),@author nvarchar(5),@date datetime,@arti' expects parameter
@newsid, which was not supplied.Source Error:
Line 37: txtMessage.Text)Line 38: con.Open()Line 39: cmd.ExecuteNonQuery()Line 40: con.Close()Line 41: 1 Imports System.Web.Configuration
2 Imports System.Data.SqlClient
3 Partial Class News_Articles_Default
4 Inherits System.Web.UI.Page
5
6 Protected Sub btnPost_Click( _
7 ByVal sender As Object, _
8 ByVal e As System.EventArgs) _
9 Handles btnPost.Click
10
11 Dim cs As String
12 cs = WebConfigurationManager _
13 .ConnectionStrings("ConnectionStringNews") _
14 .ConnectionString
15 Dim insertNews As String
16 insertNews = "INSERT news " _
17 + "(newsid, author, date, articles) " _
18 + "VALUES(@newsid, @author, @date, @articles);"
19
20 Dim con As SqlConnection
21 con = New SqlConnection(cs)
22 Dim cmd As SqlCommand
23 cmd = New SqlCommand(insertNews, con)
24
25 Dim newsid As String
26 newsid = Request.QueryString("news")
27
28 cmd.CommandText = insertNews
29 cmd.Parameters.Clear()
30 cmd.Parameters.AddWithValue("newsid", _
31 newsid)
32 cmd.Parameters.AddWithValue("author", _
33 txtAuthor.Text)
34 cmd.Parameters.AddWithValue("date", _
35 DateTime.Now)
36 cmd.Parameters.AddWithValue("articles", _
37 txtMessage.Text)
38 con.Open()
39 cmd.ExecuteNonQuery()
40 con.Close()
41
42 End Sub
43
44
45 End Class
46
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Feb 6, 2008
Hi,
Below are two methods o passing a parameterized query, are these the same, or is one open to sql injection attacks more than the other?Option 1 - through code behindDim testDataSource As New SqlDataSource()testDataSource.ConnectionString = ConfigurationManager.ConnectionStrings("ConnectionStringName").ToString()testDataSource.UpdateCommandType = SqlDataSourceCommandType.TexttestDataSource.InsertCommand = "INSERT INTO test(id) VALUES (@id1)"testDataSource.InsertParameters.Add("@id1", TextBox1.Text)
Option 2: through sqldatasource on page and control parameters<asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:ConnectionStringName %>"InsertCommand="INSERT INTO test(id) VALUES (@id1)" <InsertParameters><asp:ControlParameter ControlID="TextBox1" Name="id1" Type="Int32" /></InsertParameters></asp:SqlDataSource>
Feedback would be great, thanks!
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Dec 8, 2003
I am trying to use the following SQL query to return a set of values:SELECT id, submit_date, company_name, request_type, status
FROM tblRequestForms
WHERE request_type IN (@RequestType) AND status IN (@Status)
ORDER BY id ASCI have tried passing an array of string values to both @RequestType and @Status, but It does not work. Is there any way to pass multiple values like this using parameters?
Thanks,
Aaron
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Apr 30, 2002
I want to export an SQL Server table to an Excel Spreadsheet driven by a web interface.
I am using Cold Fusion to call a SQL Server Stored procedure. The SP accepts a variable (IDlist) from the web page and sets this to a Global Variable.
EXEC @hr = sp_OASetProperty @oPKG, 'GlobalVariables("outIDlist").Value', @outIDlist
The SP then executes a DTS package to export to Excel. The DTS package uses the Global variable in the SQL Query thus:
SELECT ...
FROM ...
WHERE tblPropertyRegister.IDProperty IN (?);
This works fine when I pass one single ID (@outIDlist = "20") into the stored procedure.
But it returns no records when I pass multiple IDs (@outIDlist = "19, 20, 21") into the stored procedure. It works fine also if I "hard code" the IDlist into the DTS query (eg WHERE tblPropertyRegister.IDProperty IN (19, 20, 21);).
The problem appears to be in the setting of the global variable in the stored procedure.
Has anyone had any experience with this? Any feed back would be greatly appreciated. TIA
Alan
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Apr 15, 2008
I'm creating a data flow task to export a set of records that were created within a specific time frame. The date offsets I'm using are read into user variables that are of type Int32. I have an OLEDB source connected to a SQL Server 2005 database using the following query to get the records I want:
select * from claim where date_created > dateadd(day,?,getdate)
I've mapped Parameter0 to my offset variable, which has a value of -7. When I hit OK to close out of the OLE DB Source editor, I get a message saying "Argument data type datetime is invalid for argument 2 of dateadd function." I can't figure out why it keeps talling me this even though the variable I'm passing in is an integer, not a datetime. I've done a lot of searching and found some instances of other people having this problem, but so far no answers. I could just go ahead and try to create an equivalent query using datediff or something, but I'd like to know what's going on here. Is this a bug in Integration Services itself, or is there another explanation?
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Sep 6, 2007
I am developing a website for multiple clients, each with their own separate database on SQL Server 2005. The database structures are identical for all clients. I like to use SQL stored procedures for the security advantages (i.e., don't need to grant access to the tables, only exec permissions on the stored procedures), but maintaining and deploying many sp's across all databases is becoming unwieldy and error-prone.
Is there a way to use parameterized queries (SqlCommand, SqlParameter) in C# code (which could be reused for all databases by changing the connection string) without having to grant access to the tables?
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Feb 27, 2008
I am having an issue with a Parameterized Query in Sql Ce 3.5
The Query resembles
select * from sometable where ((ID = @someId) or (NAME like @someName))
The first part of the query runs fine, the second returns no results when it should.
What I was hoping is that there is some way to run a server trace against the SqlCe file to see the actual query that is ran with the params replaced.
Any help would be great.
Thanks
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Oct 13, 2006
Hi all, I am using the below parameterized query and get an error while executing it....can anyone please spot the error. Any help will be appreciated. I have gone cross-eyed now looking at it all day. The error I get it isParameterized Query '(@Re_UK_Eligible nvarchar(4000),@Re_Aus_Eligible nvarchar(33),@R' expects parameter @Re_JobType_Temp, which was not supplied. sqlStmt = "UPDATE Re_Users SET Re_UK_Eligible=@Re_UK_Eligible,Re_Aus_Eligible=@Re_Aus_Eligible,Re_Can_Eligible=@Re_Can_Eligible,Re_USA_Eligible=@Re_USA_Eligible,Re_Address1=@Re_Address1,Re_Address2=@Re_Address2,Re_Address3=@Re_Address3,Re_City=@Re_City,Re_Postcode=@Re_Postcode,Re_Country=@Re_Country,Re_Homephone=@Re_Homephone,Re_Mobile=@Re_Mobile,Re_JobType_Per=@Re_JobType_Per,Re_JobType_Temp=@Re_JobType_Temp,Re_JobType_Con=@Re_JobType_Con,Re_Hours_Full=@Re_Hours_Full,Re_Hours_Part=@Re_Hours_Part,Re_Sector=@Re_Sector,Re_StepTwoDone=1 WHERE Re_UserCount=" + Session["ReUserIdentity"];
cn = new SqlConnection(ConfigurationManager.ConnectionStrings["ReConnectionString"].ConnectionString);
cmd = new SqlCommand(sqlStmt, cn);
cmd.CommandType = CommandType.Text;
//Insert UK
if (chkUK.Checked == false)
{
cmd.Parameters.Add(new SqlParameter("@Re_UK_Eligible", DBNull.Value));
}
if ((chkUK.Checked == true) && (UKRadioButtonList.SelectedIndex > -1))
{
cmd.Parameters.Add(new SqlParameter("@Re_UK_Eligible", UKRadioButtonList.SelectedItem.Text));
}
//Insert AUS
if (chkAUS.Checked == false)
{
cmd.Parameters.Add(new SqlParameter("@Re_Aus_Eligible", DBNull.Value));
}
if ((chkAUS.Checked == true) && (AUSRadioButtonList.SelectedIndex > -1))
{
cmd.Parameters.Add(new SqlParameter("@Re_Aus_Eligible", AUSRadioButtonList.SelectedItem.Text));
}
//Insert CAN
if ((chkCAN.Checked == false))
{
cmd.Parameters.Add(new SqlParameter("@Re_Can_Eligible", DBNull.Value));
}
if ((chkCAN.Checked == true) && (CANRadioButtonList.SelectedIndex > -1))
{
cmd.Parameters.Add(new SqlParameter("@Re_Can_Eligible", CANRadioButtonList.SelectedItem.Text));
}
//Insert USA
if (chkUSA.Checked == false)
{
cmd.Parameters.Add(new SqlParameter("@Re_USA_Eligible", DBNull.Value));
}
if ((chkUSA.Checked == true) && (USARadioButtonList.SelectedIndex > -1))
{
cmd.Parameters.Add(new SqlParameter("@Re_USA_Eligible", USARadioButtonList.SelectedItem.Text));
}
//Contact Details
cmd.Parameters.Add(new SqlParameter("@Re_Address1", Address1TextBox.Text));
if (Address2TextBox.Text == "")
{
cmd.Parameters.Add(new SqlParameter("@Re_Address2", DBNull.Value));
}
else
{
cmd.Parameters.Add(new SqlParameter("@Re_Address2", Address2TextBox.Text));
}
if (Address3TextBox.Text == "")
{
cmd.Parameters.Add(new SqlParameter("@Re_Address3", DBNull.Value));
}
else
{
cmd.Parameters.Add(new SqlParameter("@Re_Address3", Address3TextBox.Text));
}
cmd.Parameters.Add(new SqlParameter("@Re_City", CityTextBox.Text));
cmd.Parameters.Add(new SqlParameter("@Re_Postcode", PostcodeTextBox.Text));
cmd.Parameters.Add(new SqlParameter("@Re_Country", CountryDropDownList.SelectedItem.Text));
if (HomeTelephoneTextBox.Text == "")
{
cmd.Parameters.Add(new SqlParameter("@Re_Homephone", DBNull.Value));
}
else
{
cmd.Parameters.Add(new SqlParameter("@Re_Homephone", HomeTelephoneTextBox.Text));
}
if (MobileTelephoneTextBox.Text == "")
{
cmd.Parameters.Add(new SqlParameter("@Re_Mobile", DBNull.Value));
}
else
{
cmd.Parameters.Add(new SqlParameter("@Re_Mobile", MobileTelephoneTextBox.Text));
}
//Job Preferences
for (int i = 0; i < JobTypeCheckBoxList.Items.Count; i++)
{
if (JobTypeCheckBoxList.Items[i].Text == "Permanent" && JobTypeCheckBoxList.Items[i].Selected == true)
{
cmd.Parameters.Add(new SqlParameter("@Re_JobType_Per", 1));
}
else if (JobTypeCheckBoxList.Items[i].Text == "Permanent" && JobTypeCheckBoxList.Items[i].Selected == false)
{
cmd.Parameters.Add(new SqlParameter("@Re_JobType_Per", 0));
}
if (JobTypeCheckBoxList.Items[i].Text == "Temporary" && JobTypeCheckBoxList.Items[i].Selected == true)
{
cmd.Parameters.Add(new SqlParameter("@Re_JobType_Temp", 1));
}
else if (JobTypeCheckBoxList.Items[i].Text == "Temporary" && JobTypeCheckBoxList.Items[i].Selected == false)
{
cmd.Parameters.Add(new SqlParameter("@Re_JobType_Temp", 0));
}
if (JobTypeCheckBoxList.Items[i].Text == "Contract" && JobTypeCheckBoxList.Items[i].Selected == true)
{
cmd.Parameters.Add(new SqlParameter("@Re_JobType_Con", 1));
}
else if (JobTypeCheckBoxList.Items[i].Text == "Contract" && JobTypeCheckBoxList.Items[i].Selected == false)
{
cmd.Parameters.Add(new SqlParameter("@Re_JobType_Con", 0));
}
}
//Hours and Sector
for (int i = 0; i < HoursCheckBoxList.Items.Count; i++)
{
if (HoursCheckBoxList.Items[i].Text == "FullTime" && HoursCheckBoxList.Items[i].Selected == true)
{
cmd.Parameters.Add(new SqlParameter("@Re_Hours_Full", 1));
}
else if (HoursCheckBoxList.Items[i].Text == "FullTime" && HoursCheckBoxList.Items[i].Selected == false)
{
cmd.Parameters.Add(new SqlParameter("@Re_Hours_Full", 0));
}
if (HoursCheckBoxList.Items[i].Text == "PartTime" && HoursCheckBoxList.Items[i].Selected == true)
{
cmd.Parameters.Add(new SqlParameter("@Re_Hours_Part", 1));
}
else if (HoursCheckBoxList.Items[i].Text == "PartTime" && HoursCheckBoxList.Items[i].Selected == false)
{
cmd.Parameters.Add(new SqlParameter("@Re_Hours_Part", 0));
}
}
cmd.Parameters.Add(new SqlParameter("@Re_Sector", SectorDropDownList.SelectedItem.Text));
cn.Open();
cmd.ExecuteNonQuery();
thanks,vijay
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Feb 27, 2007
I have a class that works fine using the SQLDataReader but when I try and duplicate the process using a Dataset instead of a SQLDataReader it returnsa a null value.
This is the code for the Method to return a datareader
public SqlDataReader GetOrgID()
{
Singleton s1 = Singleton.Instance();
Guid uuid;
uuid = new Guid(s1.User_id);
SqlConnection con = new SqlConnection(conString);
string selectString = "Select OrgID From aspnet_OrgNames Where UserID = @UserID";
SqlCommand cmd = new SqlCommand(selectString, con);
cmd.Parameters.Add("@UserID", SqlDbType.UniqueIdentifier, 16).Value = uuid;
con.Open();
SqlDataReader dtr = cmd.ExecuteReader(CommandBehavior.CloseConnection);
return dtr;
This is the code trying to accomplish the same thing with a Dataset instead.
public DataSet organID(DataSet dataset)
{
Singleton s1 = Singleton.Instance();
Guid uuid;
uuid = new Guid(s1.User_id);
string queryString = "Select OrgID From aspnet_OrgNames Where UserID = @UserID";
SqlConnection con = new SqlConnection(conString);
SqlCommand cmd = new SqlCommand(queryString, con);
cmd.Parameters.Add("@UserID", SqlDbType.UniqueIdentifier, 16).Value = uuid;
SqlDataAdapter adapter = new SqlDataAdapter();
adapter.SelectCommand = cmd;
adapter.Fill(dataset);
return dataset;
}
Assume that the conString is set to a valid connection string. The Singlton passes the userid in from some code in the code behind page ...this functionality works as well.
So assume that the Guid is a valid entry..I should return a valid dataset but its null.
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Apr 16, 2008
I'm trying to do a basic update query which is working on other pages but not on this page. Dim uid As Integer = CInt(Session("uid"))
Dim cmd As New SqlCommand("UPDATE [cvdata] SET [jobCompanyName] = @inputJobCompanyName WHERE [user_id] = @uid", strConn)
With cmd.Parameters
cmd.Parameters.AddWithValue("@inputJobCompanyName", inputJobCompanyName.Text)
cmd.Parameters.AddWithValue("@uid", uid)
End With
cmd.Connection.Open()
cmd.ExecuteNonQuery()
cmd.Connection.Close()
The funny thing is that if i remove inputJobCompanyName.Text and add a custom value (for example "test") it works.So it doesn't seem to read my updated textfield or something im clueless.Kind regards,
Mark
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Sep 2, 2014
I am doing parameterized queries from Visual Basic in Visual Studio.
I have a query where I want to do something like this.
Select * from people where city in (<list of cities>)
The problem is I want to build my <list of cities> in Visual Basic and pass it to the SQL as a parameter.
I know I can't do this:
Select * from people where city in (@ListOfCities)
Currently, I'm doing this by writing the <list of cities> out to a separate table, just so I can do the query.
Select * from people where city in (Select CityName from CityTable)
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Feb 7, 2008
Hi,
I have a parameterized query. The parameters contain data from my tables. Some of the parameters could include single quotes. The single quotes are wreaking havoc in my parameterized query. How can I replace single quotes with double quotes inside of my SQL stored
procedure?
I know that it's something similar to REPLACE(@variablename, '''''', ''''''''), but I can't get the number of quotes right.
All of the examples that I am seeing are converting the quotes inside of an application. This is not an option for me, as I am calling this stored procedure from a SQL job that will run daily.
Thx.
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Feb 14, 2006
Hey everyone,
I have a smart device project in Visual Studio 2005 that has a SQL Mobile data source. I am trying to create a parameterized query that utilizes 'LIKE' and wildcards. My query is below:
SELECT LocationID, StreetNum, StreetName, rowguid
FROM tblLocations
WHERE (StreetNum = @StreetNum) AND (StreetName LIKE '%' + @StreetName + '%')
However, when I test this on my PDA, I get the following error:
SQL Execution Error.
Executed SQL statement: SELECT LocationID, StreetNum, StreetName, rowguid FROM tblLocations WHERE (StreetNum = @StreetNum) AND (StreetName LIKE '%' + @StreetName + '%')
Error Source: SQL Server Mobile Edition ADO.NET Data Provider
Error Message: @StreetName : deerbrook - FormatException
Does anyone know how to add wildcards to a parameter?
Thanks,
Lee
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Nov 9, 2000
Hi,
My query "select blah, blah, rank from tablewithscores" will return results that can legitimately hold nulls in the rank column. I want to order on the rank column, but those nulls should appear at the bottom of the list
e.g.
Rank Blah Blah
1 - -
2 - -
3 - -
NULL - -
NULL - -
At present the NULLs are at the top of the list, but I do not want my ranking in descending order. Any suggestions?
Thanks
Dan
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Jun 11, 2008
Hi, Im struggling with this insert statement, I want to use with a AJAX validation Post Form page.
Its quite straght forward, if a search query returns null the insert these values. The search query does work, what I mean by that is that txt field values seem to pass for search but not insert. Any help out there cheers Paul if (RowCount == 0)
{String strSQL = "INSERT INTO Mail_List (FirstName, Email) VALUES( @FirstName, @Email )";
try
{mySqlConn = new SqlConnection(strSqlConn);
mySqlConn.Open();SqlCommand cmd = new SqlCommand();
cmd = new SqlCommand(strSQL, mySqlConn);cmd.Parameters.AddWithValue("@FirstName", Request.Form["FirstName"]);cmd.Parameters.AddWithValue("@Email", Request.Form["Email"]);
cmd.ExecuteNonQuery();
lblStatus.Text = "Registration Successful";
}
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Feb 4, 2014
From MS Dynamics NAV 2013 I get a lot of querries that have a where clause like this:
where [Field1] like @p1 and [Field1] < @p2.
Field1 is the only primary key field and clustered index. The query also has a TOP 50 clause.
@p1 is always a "Starts-With"-value (something like N'abc%').
The query plan uses a clustered index seek but the number of reads look more like a clustered index scan.
Depending on the table size I see 1M or more reads for these querries.
If I rebuild the query in SSMS, but replace the paramerters with actual values I only see a few reads.
I was able to reproduce the issue with a temp table. See code below.
Is there a way to make SQL Server use another strategy when using the parameterized query?
SQL Server Version is 11.0.3401.
if object_id('tempdb..#tbl') is not null
drop table #tbl;
create table #tbl
(
[No] nvarchar(20)
,[Description1] nvarchar(250)
[Code] ....
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Sep 11, 2006
hi everyone,
joy mundy alluded in her webcast that it is possible to dynamically specify a table name in a parameterized ole db source query. is this true? if so, how can it be done?
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Jul 21, 2014
know if there is any way out to run execution plan for parameterized queries?
As application is sending queries which are mostly parameterized in nature and values being used are very robust in nature, So i can not even make a guess.
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May 22, 2015
I have defined a variable Var_Query_SQL and passed the below query using expression but it is showing error. where am i going wrong.
"SELECT
sample_id ,
sample_time ,
trans_date ,
product = mh.[identity] ,
comments = s.m_smp_comment
[URL] ...
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