Writing Stored Procedures In C#
Jun 17, 2008
Sorry, not sure if this is the right forum for this but hopefully you may be able to give me an answer.
I have a website which fetches data from a SQL Server database using stored procedures, so I only grant execute rights to the procedures
to avoid granting select rights to the tables. This has been working fine but I would like to try writing this code in C# instead. I have written
stored procedure that runs a select to test, and I am getting the error that the user has no rights to do select over the table.
My question is, is the code writen this way (in C#) considered equivalent to dynamic SQL (which would require select rights over the tables)?
Would this mean that I want to code my procedures in C# I need to grant select privileges over the tables to the db user?
Thanks for your time
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Nov 9, 2006
My TableAdapter wizard will not write the update and delete stored procedures and I do not know why. Any thoughts?
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Jul 23, 2005
Dear All,Please suggest some of the best practices for writing SQL serverstored procedures?I'm writing a business function (stored procedure), which callsmany-stored procedure one after another.I want this to be best optimized, so that speed can be very good.Suggestion in this regard will be appreciated.Thanks in advance,T.S.Negi
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Feb 26, 2007
Hi all,
I’m currently writing a web application on student exam timetables, I’m using SQL Server 2005 as the back-end for the database.
At present, the case states that if a student is in one examination, he/she can’t attend, or be allocated another examination while the first examination is in place, which would result in a clash
The way I’m going to target this is by writing a stored procedure in SQL Server 2005 to return an error code, which I’ll translate using ASP,NET, however at present I’m having difficulty writing the SQL code. This is because…
I’m using SQL Server 2005 Management Studio; I created the tables using MS Access and upsized them using the wizard. I can now access my database, but having difficulty editing my tables and with code…
Any ideas??
Thank-you
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May 25, 2006
I have a database schema that has an Address table used to store addresses for different entities such as Customers and Employees. I want to reuse the same Address record between different Customers and Employees without duplicating any address information. I'm not sure what the best approach might be.
Should have I have seperate stored procedures on the Address table that update and insert new addresses, where each Address record remains immutable once created? (So the update stored procedure actually creates a new Address record if the data changes). These stored procedures would then be invoked by business logic and used in tandem with stored procedures that act on Customers and Employees to ensure that no address records are duplicated.
Or should I create a view on a Customer joined with Address, and similarily with Employee and Address, and have stored procedures that act on these views and ensure that no Address records are duplicated. Should I use instead of triggers to override the behavior of insert and update on the view to achieve these?
I'm rather lost as to what direction I should take. Any help would be much appreciated, thanks!
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Jul 23, 2005
I want to know the differences between SQL Server 2000 storedprocedures and oracle stored procedures? Do they have differentsyntax? The concept should be the same that the stored proceduresexecute in the database server with better performance?Please advise good references for Oracle stored procedures also.thanks!!
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Sep 30, 2006
Hi,
This Might be a really simple thing, however we have just installed SQL server 2005 on a new server, and are having difficulties with the set up of the Store Procedures. Every time we try to modify an existing stored procedure it attempts to save it as an SQL file, unlike in 2000 where it saved it as part of the database itself.
Thank you in advance for any help on this matter
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Nov 6, 2007
Using SQL 2005, SP2. All of a sudden, whenever I create any stored procedures in the master database, they get created as system stored procedures. Doesn't matter what I name them, and what they do.
For example, even this simple little guy:
CREATE PROCEDURE BOB
AS
PRINT 'BOB'
GO
Gets created as a system stored procedure.
Any ideas what would cause that and/or how to fix it?
Thanks,
Jason
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Dec 20, 2007
I'm developing a library and want to display the alphabets across the screen. When a user clicks on one of the alphabets I want all titles beginning with that letter to appear on the screen.
How would I write this stored procedure?
My table is called Titles
Fields: Title ID Titles
Thanks!
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Feb 2, 2008
How would I write a stored procedure to get * where duedate is lessthan and not equal to today's date. Is this right?select * from librarywhere duedate < != getdate()Thanks
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Oct 30, 2007
hi,
i am new to this.
in my aspx page, i am having a dropdown which has two value
Name
EmpID
if user clicks on name from drop down, user has enter the name of employee in a textbox. And if user clicks on EmpID, he has to enter the employee ID in textbox.
Based on selection the data will be displayed in grid view.
In my database, i have a table called EmpInfo, which has three fields - EmpName, EmpID and State.
can anybody help me in writing a stored procedure for this??
Thanks
Jaimin
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Jul 7, 2006
Hi,
I am working on an application in ASP.NET 1.1 and SQL Server 2005 as database.I wanted to use SQLCLR feature of SQL Server 2005. Is it possible that i write Stored Procedures in C# 1.1 and deploy on SQL Server 2005? as it is in case of C# 2.0.
Please refer some good tutorial for it.
Regards,Imran Ghani
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Aug 13, 2007
Hi Guys,
I need some help and suggestion to rewrite one of my screens (using ASP.NET) which is using stored procedure. The processing on this screen is taking more than 3 minutes (which i know is totaly
unacceptable). I am making use of cursors within the stored procedure (SQL Server 2005). I really intend to get rid of cursors as they have their performance hit. I have been told to rewrite this screen
(or the stored procedure) so i need some help for SQL Gurus. Following are the details:
1. This is a Monthly Employee Attendance Report on a day by day basis for any given month (maximum 31 days in a month)
2. The values (for each day) have to be computed at runtime and not stored. e.g. Since an employee may have signed in/out several times in a day
3. There are around 500 employees data im dealing with
4. The user will select any given department and employee's data for the respective department has to be displayed for any given month
5. If the user selects [All Department], the entire 500 employees have to be displayed on the screen
6. This report will look like an excel report on the screen i.e. Employee's basic info and record of 31 days (maximum days in a month) are displayed in one row for each employee
7. This report involves are 7-8 tables. 7 tables are for employees basic info whereas one table has the attendance record
Kindly give me your suggestion on writing the SQL stored procedure. I cannot use any other option such as a real Excel Sheet or anything. I need suggestion on how to write this monthly report. By the
way, we dont intend to Cache the data since the report can be viewed at anytime of the day, so fresh data is required everytime. Also the data for 500 employees may be too much to be cached. Also in
the attendance table, we are dealing with approximately half a million attendance records.
Thanks and waiting for your suggestions...
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Mar 7, 2005
I am trying to write a stored procedure which would execute following logic:
- The stored procedure takes 2 optional parameters @StartDate and @EndDate
@StartDate Datetime = null
@EndDate Datetime = null
- Since the parameters are optional user can enter either one or can leave both blank.
- If user doesnot enter any values for SD (start date) and ED (end date), stored procedure should run select query replacing those values with wildcard character '%' or NULL
- If user enters SD, query should use @StartDate as the SD and GetDate() as the ED
- If user enters ED, query should use @EndDate as the ED and MIN() of the Date field as SD
I was able to write query which did almost everything as is stated above expect for incorporating NULLs
The query is as below
CREATE PROCEDURE SearchDocumentTable
@FName varchar(100) = null,
@LName varchar(25) = null,
@ID varchar(9) = null,
@StartDate Datetime = null,
@EndDate Datetime = null
AS
IF ( @StartDate IS NULL)
Select @StartDate = MIN(DateInputted) from Document
Select
FName as 'First Name',
LName as 'Last Name',
ID as 'Student ID',
Orphan as 'Orphan',
DocumentType as 'Document Type',
DocDesc as 'Description of the Document',
DateInputted as 'Date Entered',
InputtedBy as 'Entered by'
From Document,DocumentTypeCodes
Where FName LIKE ISNULL(@FName,'%')
AND LName LIKE ISNULL(@LName,'%' + NULL)
AND ID LIKE ISNULL(@ID,'%' + NULL)
AND (DateInputted BETWEEN @StartDate AND ISNULL(@EndDate,GETDATE()) OR DateInputted IS NULL)
AND Document.DocTypeCode = DocumentTypeCodes.DocTypeCode
GO
Any help would be appreciated
Thanks in advance :)
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Sep 26, 2013
Want to write from a table variable to a text file from a stored procedure.Read about xp_cmdshell bcp etc. but worried because it's supposed to be a security problem and needs to be from a permanent database.Also am getting error "The EXECUTE permission was denied on the object 'xp_cmdshell'..."
1. Is xp_cmdshell a bad idea to use even if I get permissions ?
2. Can a "permanent" table be used in a stored procedure starting out fresh each time with 0 rows rather than use a table variable ?
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Mar 29, 2006
hi
Writing to text file from table/view is done using osql,bcp etc. How do we write output of stored procedure into text file??
Thank you
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Aug 7, 2007
Was wondering which is better, writing the SQL code within the execute SQL task or calling a SP from within it with respect to performance? and what is the best practice? Also is there any way to incoporate the logic of a cursur within SSIS?
Thanks
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Oct 31, 2006
I just started looking into writing queries/SPs in C#. A simple SP looks like this.
public class ContactCode
{
[SqlProcedure]
public static void GetContactNames(string lastName)
{
SqlCommand cmd = €¦€¦. €¦€¦
cmd.CommandText = "SELECT * FROM Person.Contact WHERE LastName = " + lastName;
SqlDataReader rdr = cmd.ExecuteReader();
SqlPipe sp = €¦€¦€¦€¦..;
sp.Send(rdr);
}
}
Since it's concatenating a dynamic SQL in the code, is SQL injection a concern or the CLR integration knows to take care of the input sanity? I know good programming practice is to validate input before it gets to this but it's necessary for CLR SPs to have the same robustness as normal T-SQL SPs when it comes to input parameter handling.
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Mar 29, 2007
Hi Everybody,
I am trying to update a column Percentage in a table named Critical Doctors with a column named
PercentTime from tblPercent table, Where the column Doctor matches with any DoctorId from
tblPercent.
I am getting an error message for the following query.
Have Two tables
1.CriticalDoctors
2.tblPercent
update CriticalDoctors set Percentage =
(select PercentTime from tblPercent)
where CriticalDoctors.Doctor = (select DoctorId from tblPercent)
Server: Msg 512, Level 16, State 1, Line 1
Subquery returned more than 1 value. This is not permitted when the subquery follows =, !=, <, <=
, >, >= or when the subquery is used as an expression.
The statement has been terminated.
Pls give me reply on how to write a stored procedure so that I can equate the percentage column
with one value and also check the condition with one value.
Thanking you guys in advance.
madhav
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Feb 26, 2015
Any way to have a process run that will not write its changes to the transaction log? I have a process that runs every three hours and has a huge impact on the transaction log (it becomes larger than the database itself). We do hourly backups of the transaction log and normally it is reasonably sized but when this process runs, it gets HUGE.
The process takes source data, massages it and writes it to summary tables. It is not something we need to track as we can recreate the summary tables if needed and it has no impact on the source tables.
Everything is driven through a stored procedure. Is there a way to run a stored procedure and tell it that nothing it does should be written to the transaction log?
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Apr 29, 2008
How do I search for and print all stored procedure names in a particular database? I can use the following query to search and print out all table names in a database. I just need to figure out how to modify the code below to search for stored procedure names. Can anyone help me out?
SELECT TABLE_SCHEMA + '.' + TABLE_NAME
FROM INFORMATION_SCHEMA.TABLES
WHERE TABLE_TYPE = 'BASE TABLE'
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May 15, 2007
hi,
i am a nubie, and struggling with the where clause in my stored procedure. here is what i need to do:
i have a gridview that displays records of monthly view of data. i want the user to be able to page through any selected month to view its corresponding data. the way i wanted to do this was to set up three link buttons above my gridview:
[<<Prev] [Selected Month] [Next>>]
the text for 'selected month' would change to correspond to which month of data was currently being displayed in the gridview (and default to the current month when the application first loads).
i am having trouble writing the 'where' clause in my stored procedure to retrieve the selected month and year.
i am using sql server 2000. i read this article (http://forums.asp.net/thread/1538777.aspx), but was not able to adapt it to what i am doing.
i am open to other suggestions of how to do this if you know of a cleaner or more efficient way. thanks!
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Jun 13, 2007
Seems like I'm stealing all the threads here, : But I need to learn :) I have a StoredProcedure that needs to return values that other StoredProcedures return.Rather than have my DataAccess layer access the DB multiple times, I would like to call One stored Procedure, and have that stored procedure call the others to get the information I need. I think this way would be more efficient than accessing the DB multiple times. One of my SP is:SELECT I.ItemDetailID, I.ItemDetailStatusID, I.ItemDetailTypeID, I.Archived, I.Expired, I.ExpireDate, I.Deleted, S.Name AS 'StatusName', S.ItemDetailStatusID, S.InProgress as 'StatusInProgress', S.Color AS 'StatusColor',T.[Name] AS 'TypeName', T.Prefix, T.Name AS 'ItemDetailTypeName', T.ItemDetailTypeID FROM [Item].ItemDetails I INNER JOIN Item.ItemDetailStatus S ON I.ItemDetailStatusID = S.ItemDetailStatusID INNER JOIN [Item].ItemDetailTypes T ON I.ItemDetailTypeID = T.ItemDetailTypeID However, I already have StoredProcedures that return the exact same data from the ItemDetailStatus table and ItemDetailTypes table.Would it be better to do it above, and have more code to change when a new column/field is added, or more checks, or do something like:(This is not propper SQL) SELECT I.ItemDetailID, I.ItemDetailStatusID, I.ItemDetailTypeID, I.Archived, I.Expired, I.ExpireDate, I.Deleted, EXEC [Item].ItemDetailStatusInfo I.ItemDetailStatusID, EXEC [Item].ItemDetailTypeInfo I.ItemDetailTypeID FROM [Item].ItemDetails IOr something like that... Any thoughts?
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May 13, 2008
Greetings:
I have MSSQL 2005. On earlier versions of MSSQL saving a stored procedure wasn't a confusing action. However, every time I try to save my completed stored procedure (parsed successfully ) I'm prompted to save it as a query on the hard drive.
How do I cause the 'Save' action to add the new stored procedure to my database's list of stored procedures?
Thanks!
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Apr 7, 2006
We recently upgraded to SQL Server 2005. We had several stored procedures in the master database and, rather than completely rewriting a lot of code, we just recreated these stored procedures in the new master database.
For some reason, some of these stored procedures are getting stored as "System Stored Procedures" rather than just as "Stored Procedures". Queries to sys.Objects and sys.Procedures shows that these procs are being saved with the is_ms_shipped field set to 1, even though they obviously were not shipped with the product.
I can't update the sys.Objects or sys.Procedures views in 2005.
What effect will this flag (is_ms_shipped = 1) have on my stored procedures?
Can I move these out of "System Stored Procedures" and into "Stored Procedures"?
Thanks!
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Apr 23, 2008
Hello friends......How are you ? I want to ask you all that how can I do the following ?
I want to now that how many ways are there to do this ?
How can I call one or more stored procedures into perticular one Stored Proc ? in MS SQL Server 2000/05.
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Mar 26, 2008
Hello
I'm start to work with SSIS.
We have a lot (many hundreds) of old (SQL Server2000) procedures on SQL 2005.
Most of the Stored Procedures ends with the following commands:
SET @SQLSTRING = 'SELECT * INTO ' + @OutputTableName + ' FROM #RESULTTABLE'
EXEC @RETVAL = sp_executeSQL @SQLSTRING
How can I use SSIS to move the complete #RESULTTABLE to Excel or to a Flat File? (e.g. as a *.csv -File)
I found a way but I think i'ts only a workaround:
1. Write the #Resulttable to DB (changed Prozedure)
2. create data flow task (ole DB Source - Data Conversion - Excel Destination)
Does anyone know a better way to transfer the #RESULTTABLE to Excel or Flat file?
Thanks for an early Answer
Chaepp
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May 30, 2008
suppose,the type of the stored procedure's paramters is varchar .I hate to add parameterNames and types.If i can read the string of the stored procedure the get the paramterNames by operating text?
public void storeOperate(string stringParameter,string name) { string[] strs=stringParameter.Split('&'); SqlConnection conn = new SqlConnection(getConnectionString.getconnectionString()); SqlCommand cmd=new SqlCommand(name,conn); cmd.CommandText=name; cmd.CommandType=CommandType.StoredProcedure; foreach(string str in strs) { cmd.Parameters.Add(".....",SqlDbType........).Value=str; //my trouble } conn.Open(); cmd.ExecuteNonQuery(); conn.Close(); cmd.Dispose(); }
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Jun 16, 2007
Hi,
Do you know how to write stored procedures inside another stored procedure in MS SQL.
Create procedure spMyProc inputData varchar(50)
AS
----- some logical
procedure spMyProc inputInsideData varchar(10)
AS
--- some logical
--- go
-------
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May 8, 2008
I am writing a set of store procedures (around 30), most of them require the same basic logic to get an ID, I was thinking to add this logic into an stored procedure.
The question is: Would calling an stored procedure from within an stored procedure affect performance? I mean, would it need to create a separate db connection? am I better off copying and pasting the logic into all the store procedures (in terms of performance)?
Thanks in advance
John
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Nov 1, 2007
Hi all - I'm trying to optimized my stored procedures to be a bit easier to maintain, and am sure this is possible, not am very unclear on the syntax to doing this correctly. For example, I have a simple stored procedure that takes a string as a parameter, and returns its resolved index that corresponds to a record in my database. ie
exec dbo.DeriveStatusID 'Created'
returns an int value as 1
(performed by "SELECT statusID FROM statusList WHERE statusName= 'Created')
but I also have a second stored procedure that needs to make reference to this procedure first, in order to resolve an id - ie:
exec dbo.AddProduct_Insert 'widget1'
which currently performs:SET @statusID = (SELECT statusID FROM statusList WHERE statusName='Created')INSERT INTO Products (productname, statusID) VALUES (''widget1', @statusID)
I want to simply the insert to perform (in one sproc):
SET @statusID = EXEC deriveStatusID ('Created')INSERT INTO Products (productname, statusID) VALUES (''widget1', @statusID)
This works fine if I call this stored procedure in code first, then pass it to the second stored procedure, but NOT if it is reference in the second stored procedure directly (I end up with an empty value for @statusID in this example).
My actual "Insert" stored procedures are far more complicated, but I am working towards lightening the business logic in my application ( it shouldn't have to pre-vet the data prior to executing a valid insert).
Hopefully this makes some sense - it doesn't seem right to me that this is impossible, and am fairly sure I'm just missing some simple syntax - can anyone assist?
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May 15, 2008
i have created the folowing function but keep geting an error.
Only functions and extended stored procedures can be executed from within a function.
Why am i getting this error!
Create Function myDateAdd
(@buildd nvarchar(4), @avdate as nvarchar(25))
Returns nvarchar(25)
as
Begin
declare @ret nvarchar(25)
declare @sqlval as nvarchar(3000)
set @sqlval = 'select ''@ret'' = max(realday) from (
select top '+ @buildd +' realday from v_caltable where realday >= '''+ @avdate +''' and prod = 1 )a'
execute sp_executesql @sqlval
return @ret
end
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Jun 17, 2006
hi
i need to use only one stored procedure and access many tablesso how write a stored procedure for that dohelp me looking forward for a reply to the earliest i am developing web page using asp.net using c# and sqlserver as backend
looking forward for a replygayathri
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