Questions tagged [c#]

C# is a general-purpose, managed, garbage-collected, object-oriented programming language created by Microsoft.

Filter by
Sorted by
Tagged with
1
vote
1answer
104 views

Joining tables on DB server vs App-Backend server

I have two tables stored on the DB server. I need to join these two tables and perform further calculations. I am sure that the calculations part should be done on backend server. But I am wondering ...
0
votes
1answer
741 views

Create a maintenance plan for sql database with C#

We are planning to create c# jobs that perform some database maintenance actions such as backup, shrink files etc... I have read in many blogs that database shrink is not recommended and thats why I'...
3
votes
3answers
2k views

AddWithValue performance and plan cache implications

Recently I noticed my company's application using AddWithValueto pass parameter values to dynamic, parameterized queries. Example: cmd.Parameters.AddWithValue("@VehicleId", Vehicles.VehicleId); In ...
0
votes
1answer
332 views

What is a staging table and how do you protect data loss when transferring the data?

What is a staging table? What is it used for? Are there best practices that should be applied? I'm working in Oracle right now. Are staging tables platform dependent? I'm performing a bulk copy with ...
6
votes
3answers
8k views

Pass datatable as parameter in PostgreSQL

I have one datatable in asp.net C#. And I want to pass that datatable into PostgreSQL function as a table parameter. How is it possible? Below example is same but it is in SQL Server. I need same ...
5
votes
2answers
2k views

What's the best practice of inserting a collection of data into a SQL Server database

I am using C#, Entity Framework. SQL Server for the development. I have a method which has two parameters (int ID, List<String> _listobj). For each ID, there is a list of obj. All of these IDs ...
1
vote
0answers
202 views

SSIS log subcomponent name

I want to log information using a 2016 SSIS C# (2015) script task that will be easily findable in my SSIS reports I have built. My plan is to use the IDTSComponentEvents.FireInformation method, and ...
6
votes
2answers
15k views

sql server , set N prefix as unicode for all queries by default

Is there any option in ms sql server which use N prefix for my database. There are many query in my application which non of them use N prefix for nvarchar fields , and now I have to set N for all of ...
0
votes
1answer
306 views

Arithmetic Overflow at RunningPackages (SSIS) problem [closed]

I've developed an SSIS Package with the C# Code.All the Package were running fine.But for the past 2 days, we are experiencing public void Main() { // TODO: Add your code here ...
2
votes
2answers
48 views

Report individual changes to data

I need to produce a daily extract on the individual changes to a dataset. So, there are 14 tables containing product and customer information and the extract must only show records from each table ...
3
votes
1answer
3k views

Unable to connect using Azure AD Service Principal on SQL Server

I'm having trouble testing a connection to Azure SQL Server using SSMS with an active directory service principal. I have an AD Admin account created, and have successfully added a colleague's AD ...
4
votes
2answers
873 views

Timeout expired SqlException for complex Procedure

I use Sql Server 2008 R2 and ASP.NET 4.5. Sometimes, I get this error when I executed a complex procedure: System.Data.SqlClient.SqlException Timeout expired. The timeout period elapsed ...
7
votes
2answers
1k views

Why can't C# SMO see extended properties on a column but Powershell SMO can?

I am attempting to read extended properties on tables and columns in a winforms C# application. I am using SQL Server SMO to do so. When I execute the application it does not see the extended ...
-3
votes
1answer
131 views

SQL Server database chooser

I remember I used to use a tool that displayed a form so that any reachable database could be selected, like the initial prompt when you open SSMS. I don't remember if it's a StackOverflow tool, ...
1
vote
2answers
586 views

How to copy data from one database to another database efficiently?

I have a conceptual question. I have two databases which theoretically have the same structure but one of them is a SQLBase database and the other one is a SQL Server database. One database (the ...
2
votes
0answers
544 views

What to do when you find slow running query?

I have two databases. One with 10.000 rows and one with 10 million rows. I have a load test and I am running it towards a rest api endpoint. This endpoint does a query to database and average ...
1
vote
2answers
2k views

Getting the metadata about a Query and a Stored procedure in SQL Server

I would like to get all the names of the columns in a given query [SQL Textual Query] and also the columns that are in the SELECT clause in a Stored Procedure. Is there any ways other than using ...
-1
votes
2answers
637 views

Get compressed data from sql server database to application

I have created a C# application. I have used sql server database for this application. When i run the application it communicate with the sql server and retrieve data. My problem is that when ...
2
votes
1answer
915 views

SSIS append trailer with Script

I am trying to add a footer to a flat file output. I have 2 data flows in my control flow. One creates the file from the DB. It goes from OLE DB Source to Flat File Destination. The second control ...
1
vote
2answers
3k views

c# Backup sql server database, error Operating system error 5(Access is denied.)

I have been trying to backup an sql server database, and I understand that this error is in regards to drive write protection. I am at the end of my rope with this, as nothing that I have found online ...
1
vote
1answer
3k views

Asynchronous database inserts from C# always result in a deadlock

I'm hoping this doesn't come off as too amateurish, but I'm converting a synchronous program to run asynchronously. So far, I've gotten everything running asynchronously except database inserts. ...
0
votes
1answer
436 views

Query fails from application but runs fine in SSMS

I have a query that runs fine when executed from SSMS but when done so from the application, it fails with a (database level) exception. select ksprintid from kshistory_akt h where cast(h.serialno as ...
3
votes
2answers
724 views

Can add one CLR function to SQL server but not a second in the same assembly: loading wrong DLL

With the following code, I used csc to compile the dll. I then added the assembly to sql server 2014 using CREATE ASSEMBLY ReplaceMultiWord from 'd:\bcp\ReplaceMultiWord.dll' WITH PERMISSION_SET = ...
14
votes
3answers
20k views

3rd party dll in SQL Server CLR

I need to use a third party DLL in a trigger c# code in SQL Server CLR But when I try to add reference it just shows some DLLs from SQL Server. How can I add my third party dll to SQL Server?
2
votes
1answer
516 views

SELECT COUNT(*) returns no data SQL Server 2012

I have a query, that as far as I know has failed exactly one time. It's a simple select count(*) from one table, no joins. But at least this once, executing that query resulted in no data read from ...
3
votes
2answers
3k views

A Dynamic where clause in MS SQL Server

The Problem My SQL Server database contains a view that looks like the following: +-------------+-----------+------+-------+------+------+ | CAR_ID | MAKE |COLOR | Miles | Seats| MODEL| +--...
0
votes
1answer
68 views

Procedure returning different values

I have a procedure TempSalesUpdateID which gets all ProductName's column in TempSales table and set it's corresponding ProductID. ALTER PROCEDURE [dbo].[TempSalesUpdateID] AS UPDATE T SET T....
2
votes
1answer
151 views

150 External flat files used to create internal DB

I have a situation in which I must create an entire DB off of ~150 external txt files (pipe delimited) which all represent unique tables. Furthermore these txt files come in daily and need to be ...
4
votes
3answers
9k views

What's the most efficient way to load a csv file into SQL Server 2016?

Alright, so this question seems simple up-front. Well, there's a bit more to it than just loading the file. The entire story goes like this: For some reason, our client sends us what can only be ...
3
votes
1answer
1k views

CLR Procedure with XML parameter returns Data at the root level is invalid. Line 1, position 1

I have following CLR stored procedure, which is throwing error on this command xmlDoc.LoadXml(inputXml); code public static int spGetTaxOfficeXML(SqlXml _inputXml) { // this ...
1
vote
4answers
980 views

Load testing: The performance of a query is decreasing as the number of parallel executions is increasing

I'm seeing a slow down when doing load testing on my app. I have a query that takes about 350ms to run, but what I run it in parallel 8 times (not to mention 32 times), it goes up to 2.5 seconds. I ...
3
votes
4answers
62k views

Converting varbinary data to varchar in SQLServer leads to unexpected results

I need to fix some data conversion issue in SQL server 2008. I got some requirement change on storing the data. Without much care I converted existing varbinary data to varchar using CONVERT(NVARCHAR(...
14
votes
1answer
8k views

Are we required to handle Transaction in C# Code as well as in stored procedure

Do we really require transaction handling in c# as well database store process both side C#: Using(transaction with transaction scope) { Execute stored proc; Transaction. Complete; } SQL ...
5
votes
1answer
3k views

SSIS 2012: What rights are needed to connect to SSDB via DMO

I'm trying to connect to the SSDB catalog to execute a package using the .NET object model e.g. using Microsoft.SqlServer.Management.IntegrationServices; var sqlConn = new SqlConnection(...
-1
votes
1answer
1k views

Can't connect to LocalDB from Visual Studio 2015

When I try to connect to the database, to which I was previously able to connect, I get the following error: I tried to solve this by looking up other stackoverflow questions and online resources, ...
0
votes
2answers
904 views

fetching Remote table data and storing into local dump file in pgSQL? [duplicate]

I want to copy one table's content from a remote machine to local. I have tried with psql Command \copy. It's working fine as "copy" is not working due to copying from remote. But is there any way I ...
2
votes
2answers
2k views

Grant execute on xp_logevent to sa using sa user to do it

Running a SQL Server 2012 CLR stored procedure with this code: const string executeLog = "EXEC master..xp_logevent @errorNumber, @message, informational"; using (SqlCommand cmd = new SqlCommand(...
0
votes
1answer
51 views

Best way to store products of Multiple Fields of different information

I have around 6 table in one of 3rd party cloud database. I am planning to Build it MSSQL. My problem in each of these table there are 20-40 field of different information and Item. Which approach ...
1
vote
1answer
165 views

Creating a Windows database backup service [closed]

I am creating a Windows service in C# that will run on our system to run a backup between 3am and 5am on our databases. I have started by creating a method that will basically run the backup when SQL ...
0
votes
1answer
908 views

How to setup sync between MongoDB and C# .NET Application

What is the best practice to synchronize a MongoDB remote database with a C# .NET App that would allow queries to be responded to within the local file system and update itself when there is a change ...
1
vote
1answer
3k views

Service Broker activation procedure in C# with external dependencies

I am not entirely sure if I have come to the right place, because this question involves both SQL Server and .Net. Apologies if this is not an appropriate place for my question! I am currently ...
6
votes
4answers
86k views

Login to SQL Server using Windows Authentication

I have an (.Net Console App) EXE which connects to various SQL databases using SQL server Authentication with appropriate credentials. Now there is change required in the EXE to use windows ...
2
votes
0answers
957 views

Using C#, is there a method to restore a database from a multi-file backup detecting which files are full vs diff?

I know there is functionality to restore databases in C#, however if I am given 2 or more files in a directory containing a full and differential backup files I would like to: 1) Determine which file ...
0
votes
1answer
739 views

How to make SQL Server order fields by 'Id' (which in this case is an Identity column)

I have an SQL Server table that i post into using C#. I would like the fields to be ordered using Id. Instead i get something like this: I need the id column to be arranged in order of increasing ...
1
vote
2answers
541 views

Understanding connection string syntax

I am following How To Create a SQL Server Database Programmatically but find limited resources explaining the syntax is greater detail other than MSDN: Filegroup Options. Take the following code on ...
3
votes
2answers
953 views

SQLCLR TVF that calls web service is getting error 401: Unauthorized

I am calling a web service from a SQLCLR TVF in SQL Server 2008 R2. On the IIS server this service has open permissions. When tested using GET or POST requests on a browser the web service works as ...
0
votes
1answer
64 views

Check for existing matches to find the field their grouped-by

So I have a table of values associated with different sessions using a field called sessionid, lets say the table has 3 other fields: itemcode, itemcost, & itemeffect. What I end up doing, is ...
4
votes
2answers
553 views

How to deal with Users Needing to Enter Mixed Data Types in MS SQL Server

I have a form in a C# application that I can't change with a data table bound to a query. The user enters a mark for a student's task or 'A' for absent. However, the person who designed this had the ...
3
votes
1answer
2k views

Handle concurrency on sql server for a booking system

I've been banging my head against the wall trying to solve this problem and I couldn't come up with a solution that absolutely guarantees two users can't book an appointment for the same time. The ...
0
votes
1answer
4k views

Change the default version of MSSqlLocalDB for Visual Studio 2015

I am working on a C# project with SQL Server. For development, we use LocalDB instance of SQL Server. If something is changed in the database, we check-in the .mdf/.ldf files into TFS. The connection ...