SQL Server :: Statement Using String Concatenation
Mar 25, 2011
I want to create a program that allows me to enter the name of a table, a field along with a value. The program should concatenate the values to form a valid SQL select statement. I can also modify the program to include multiple field names and values. Example: -Select "FieldName" from "TableName" where "FieldName"= "Value" I have created 3 textboxes called and 3 labels named Select, From and Where This is my code here, i would need an assistance on the right way to achieve this, maybe mine is wrong.
[Code]....
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Mar 25, 2011
I want to create a program that allows me to enter the name of a table, a field along with a value. The program should concatenate the values to form a valid SQL select statement. I can also modify the program to include multiple field names and values. Example: -Select “FieldName” from “TableName” where “FieldName”= “Value” I have created 3 textboxes called and 3 labels named Select, From and Where This is my code here, i would need an assistance on the right way to achieve this, maybe mine is wrong.
Partial Class _Default
Inherits System.Web.UI.Page
Protected Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim SelectItem As String
Dim From As String
Dim Where As String
SelectItem = txtSelectItem.Text
From = txtFrom.Text
Where = txtWhere.Text
lblDisplay = "Select" & " " & SelectItem & " " & "From" & " " & From & " " & Where
End Sub
End Class
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Apr 21, 2010
suppose x=3,y=4
Response.Write(x.ToString + " " + y.ToString)
This gave correct as i thought: 3 4 But this gave unexpected result, so what's the rule behind string concatenation and conversion?
Response.Write(x.ToString + " " + y).
This gave :7. Why could'nt 'y' here got converted to string ? why arithimatic sum happend here?
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Nov 3, 2010
how this string concatenation taking place? i am really confuse what is happening why that slash i there and how the double quotes are used
SessionStateItemCollection items = new SessionStateItemCollection();
items["LastName"] = "Wilson";
items["FirstName"] = "Dan";
foreach (string s in items.Keys)
Response.Write("items["" + s + ""] = " + items[s].ToString() + "<br />");
Response.Write("items["" + s + ""] = " + items[s].ToString() + "<br />");
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Feb 17, 2011
I have a string variable that is a concatenation of text and a variable;
var selectQueryString = "SELECT * FROM WholesaleItems WHERE ProductClass like '" + @pc + "%'" ;
This returns with a space between the variable and the percent sign breaking the LIKE selector. I cannot find any way to trim the variable result.
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Feb 4, 2010
I am developing a application in C#, ASP.NET and I have a lot os divs in my page, each div is a container for a chat message and each div have a unique id: like this
"<div id='" + myMsgs[j].id_chat_message + "' style='padding: 10px;'>"
so, each div have the same id in page and in database. now a want to find some div, with jquery, but it doesnt work
for (var j = 0; j < myMsgs.length; j++) {
findDiv = $('#<%= ' + myMsgs[j].id_chat_message + '.ClientID%>');
}
i know that my problem is the concatenation of the strings, but i dont know how to solve it.
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Dec 20, 2010
I'm trying to use a function in my code behind to let me select a different column each time by calling the function with a different parameter.
However, I keep being told 'invalid column name', even though in the error page the column name appears perfectly valid.
Private Function getData(ByVal s As String) As String
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Sep 25, 2010
have a very important issue,i have three Stored Procedures Sp1,Sp2 and Sp3 .the first one (Sp1) will execute the second one (Sp2) and save returned data into @tempTB1 and the Second one will execute the third one (Sp3) and save data into @tempTB2.if I execute the Sp2 it will works and it will returned me all my data from the Sp3 ,but the problem is in the Sp1, when i execute it it will display this Error:INSERT EXEC statement cannot be nested I tried to change the place of execute Sp2 and it display me another error:Cannot use the ROLLBACK statement within an INSERT-EXEC statement.
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Jun 14, 2010
My code for splitting the strings is working however, i still need to use the splitted string my page. How can i achieve this? Here's my current code
private void SplitStrings()
{
List<string> listvalues = new List<string>();
listvalues = (List<string>)Session["mylist"];[code].....
how can i replace the response.write with any label or literal? when i tried to use a literal on the code it displays one single string not all of the strings that's been splitted.
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May 28, 2010
I'm using LinqToSql like this with a CheckBoxList in ASP.NET:
var teachers = from x in dc.teachers select x;
cbl.DataSource = teachers;
cbl.DataTextField = "name";
cbl.DataValueField = "teacherID";
cbl.DataBind();
I want to display both "firstname" and "name" in the DataTextField however. I found this solution but I'm using LINQ: [URL]
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Nov 11, 2010
String or binary data would be truncated. The statement has been terminated. I'm using the following code but some times(not all the time) i get the above error ....
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Apr 9, 2010
I have a SqlCommand object on my c# based asp.net page. The SQL and the passed parameters are working the majority of the time. I have one case that is not working, I get the following error:
String or binary data would be truncated. The statement has been terminated.
I understand the error and but all the columns in the database should be long enough to hold everything being sent.
Is there a way to see what the actual SQL being sent to the database is from SqlCommand object? I would like to be able to email the SQL when an error occurs.
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Feb 19, 2010
How can I concatenate two string in Markup Portion. See the following:
<ItemTemplate>
<asp:Image ID="Image1" runat="server"
ImageUrl='<%#Bind("PictureURL") %>' Width="80px" />
</ItemTemplate>
I want to add an pre URL before the binding. How can I accomplish this?
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Feb 27, 2011
The following stored procedure updates the value in LeaveTransaction table.
[code].,...
My Question here:
I have written the above trigger,which would update the value for the corresponding records in another table ie) LeaveCumulative table. The trigger is not updating the value in the designated rows in the leavecumulative table. Whereas when I excute the same update command separately in the Query Editor window the trigger is working fine.
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Jan 15, 2011
At University it was suggested to us that the best way to learn about designing and implementing databases is to practice the art. So I chose the following statement to implement and refine my skills:
Harpers Hauliers deliver shipments on contract for customers. Each contract is identified by a unique contract number. The contract may require a single or many shipments. Each shipment must be allocated resources of a vehicle (regisatration number, type, volume, weight), which is suitable for the shipment and a driver (name, address, telephone number) who is licensed to drive that type of vehicle.
As soon as a customer (companyname, address, telephone number) makes an enquiry, a pending contract is set up. The contract is then negotiated on price between the customer and the haulier. Not all pending contracts are successfully negotiated. Either the customer or the haulier may back out at this stage. If the haulier has previously carried for this customer and financial settlements were not made to his satisfaction, he may reject the contract. He may also reject the contract on the basis that he thinks the workload being undertaken is too big a risk for his company with this customer that is the contract is worth more than he is willing to risk for this customer.
An agreed contract requires the haulier to deliver the listed shipments between a start and an end date, at an agreed price. The haulier always takes out an insurance policy on the contract, in case he cannot allocate enough resources to the contract to get it delivered on time.For each shipment in the delivery there is an origin and destination. The shipment has a description, a weight and a volume. The haulier has a fleet of vehicles of different types and a staff of drivers with different license types, to match the vehicle types. During the contract, the haulier tries to allocate vehicle, driver and time-slot resources to each ship-ment. The vehicle must have a suitable volume and weight capacity and the driver must have a suitable license to drive that vehicle.
The time must be when the driver and vehicle are free and before the contract end date. As each shipment is delivered, it is marked off as delivered by the driver, giving the date and time of delivery. If not all shipments are delivered by the contract end date, the con-tract becomes overdue, incurring a penalty cost on the haulier. When all shipments are delivered, the haulier invoices the customer for the required amount. Each invoice is has a date and is identified by a unique invoice number . Payment from the customer may be in full or may be partial. The contract is kept active until all payments have been made against it.
And here is the ERD that I have come up with. I have created the ERD in Visio 2010.
[IMG]http://i56.tinypic.com/6s43t4.jpg[/IMG]
Can someone who's an expert in Database design kindly check my ERD and see if it perfectly matches the Problem Statement.
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Mar 26, 2016
CREATE TABLE [dbo].[login] (
[Id] NVARCHAR (50) NOT NULL,
[username] NCHAR (10) NOT NULL,
[password] NCHAR (10) NOT NULL,
[Phone_no] NVARCHAR (50) NOT NULL,
[Email] NVARCHAR (50) NOT NULL,
PRIMARY KEY CLUSTERED ([Id] ASC)
[Code] ....
When I am trying to save the value then get above mentioned error ....
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May 29, 2010
i'm trying to to create a simple string array with data retrieved from a select statement(SELECT firstname FROM customers , for ex.)
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May 23, 2010
I am creating a string that is a list of comma-delimitted values by looping through the selections in a CheckBoxList.I am able to display this value, so I know that it is creating what I expect. I am attempting to pass this list to an IN statment in a SELECT query:
[code]...
However,I do not understand when this would be converted to an INT. I have tried many different formatting attempts (such as encapsulating the string in parenthesis (e.g. "(4,5)" ) for the SELECT query, but I have yet to find the right one to make this work. It seems like formatting is the problem, but perhaps I am missing something else.
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Mar 9, 2011
I have a requirement in my app to find out if a certain row exists in a table and then if it does get some fields from another row
I have two parameters an EventId and a UserId.
This is the normal statement I would use to get that row
[Code]....
Then I would check if the result > 0. If it is greater than 0 this is the statement I would use to get the other details
[Code]....
So how can I join this into one statement? This is what I have tried
[Code]....
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Dec 27, 2010
I've build a query, but the where statement is doing strange things. First my query:
select * from
(
SELECT 1 as Tag, null as Parent, row_number() OVER (ORDER BY tblOccasion.ID DESC) AS [tblOccasion!1!rownum], FROM tblOccasionwhere tblOccasion.UserID = @UserName and ((tblOccasion.MerkDesc like '%' + @search + '%')or(tblOccasion.UitvoeringDesc like '%' + @search + '%')or(tblOccasion.UitvoeringDesc like '%' + @search + '%'))
) AS A where a.[tblOccasion!1!rownum] BETWEEN (@startRowIndex) AND (@startRowIndex+@pageSize)
order by a.[tblOccasion!1!MerkDesc!Element],a.[tblOccasion!1!TypeDesc!Element],a.[tblOccasion!1!UitvoeringDesc!Element]
FOR XML EXPLICIT;
But the result should be ordered by Merkdesc, then TypeDesc, and then as last the uitvoeringDesc.
So for testing i only used the MerkDesc. The strange thing is that i get the result:
BMW
BMW
BMW
Opel
Volvo
But this was page 1, on page 2 (paging) you got BMW again... so he takes the first 5 rows ore something and then the order. But i like that he first orders it by MerkDesc and then picks the first 5. How can i change that, i can't add a Order by in the inline sql statement i get this error: Msg 1033, Level 15, State 1, Procedure MijnAdvertenties, Line 47 De ORDER BY-component is ongeldig in weergaven, in line functies, afgeleide tabellen en algemene tabelexpressies, tenzij ook TOP of FOR XML is opgegeven.
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Nov 9, 2010
I'm trying to pull a list of clients that have both of two codes in the code table. Here is what I have tried and it does not return any rows. I know that there are clients that have both codes.
[Code]....
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Sep 27, 2010
I have to pull up a list of people by their branch number which could vary, and give a detailed report on there performance using a select queries. I have the select queries but how can i create a script to look similar to this one. Ive got the branch drop downlist already created just need to know how i can go about pulling all the users in this group and doing this select to all of them. someone told me I might need to use cursors to loop thru a select with every person in the list but im not sure how to go about that.
select fldusername from tbluser where fldio='o' and
flduserbranch=@branchid
is going to give me the names of the people i need to query. but how can i run a query on each of them seperate?
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Jan 29, 2011
Here is the deal. I need to create a Stored Procedure that has 2 SELECT statements. Now in ASP.NET, I know that a DataSet can have multiple tables and the DataAdapter can do just that. I am stuck with a scenario where I need to get a value from the first SELECT statement which will later be used in the second SELECT statement. I am creating a SP that passes one parameter (@AnswerID). Which should give me 2 resultsets. See below SELECT statements.
[Code]....
So how do I get the QuestionID from the first SELECT statement?
Basically I am creating a Questionnaire that has Question Dependacies. So from the above SQL statements I would like to display the Question Title with it's relevant answer options but depending on the previous Answer selected hence the @AnswerID parameter.
The reason why I want to use 2 SELECT statements is because I don't want to have 2 roundtrips to th server. So in my code the DataAdapter should return 2 resultsets and fill the DataSet.
If there is any another solution that can prevent 2 roundtrips to the server, I would most definitely like to know how to do it.
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Mar 30, 2011
n my button_click event, I have three data connections being opened and closed... I'm wondering... should I have one try/catch statement with the three connections and executions in the single try/catch... or should I have a try/catch statement for each connection/execution?
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Jul 21, 2010
Here's my SQL Statement
[Code]....
Unfortunately, I get the following error message:Message="The ORDER BY clause is invalid in views, inline functions, derived tables, subqueries, and common table expressions, unless TOP or FOR XML is also specified."
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