Questions tagged [c#]

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

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1answer
17 views

Conditional multi table insert

My application parses a web resource for data constantly. The data is then used to build a domain object. The domain object is represented in my database across several tables. The domain object is ...
0
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1answer
33 views

First-In and Last-Out times for Night Shift and Day Shift Employees

Kindly share suitable technique to handle night shift as well as day shift. Below are the shifts, Night, 2020-07-20 17:00 to 2020-07-21 02:00 Night, 2020-07-20 17:00 to 2020-07-21 02:00 Day, 2020-...
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1answer
24 views

Upserting 50K records into big table (app. 350 columns) in postgresql

Using C# I'm trying to upsert from csv file (~ 55000 records) to a postgresql table with 350 columns. I'm just building the upsert statements from header and record which are comma separated. Like ...
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0answers
24 views

Sql service broker and SqlDependency

I have a system where my TCP/IP command prompt application receive data and insert that data in [database1].[mytable]. Now I want to move that data from [database1].[mytable] to [database2].[...
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0answers
36 views

Modeling Device Relationships

At currently I am designing an inventory system for internal use and I have come across an interesting scenario when adding tables for creating the devices. Currently I have tables for Device, ...
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1answer
20 views

i have error in query [closed]

i am not getting what is the issue in the query probably i am not following the correct way to put the string and char sign , i am inserting the data in c# to local host with where clause please check ...
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0answers
6 views

Gridview Computation of Specify rows

protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e) { decimal k=0; foreach (GridViewRow row in GridView1.Rows) { ...
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1answer
24 views

Login failed for newly created user

I just created my first database yesterday. It is now set up and I can write to it from my C# application using the admin user login. I would now like to use a limited write only user so my admin ...
5
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1answer
170 views

System.Web in SQL Server CLR Function

I have done some light research into this topic and I would like to know what are all the pro's and con's or enabling/registering this particular .dll within SQL Server? Back information - we are ...
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0answers
12 views

I need to know how many connections are using mongodb when an error comes up

According with this https://stackoverflow.com/questions/7446528/mongodb-c-sharp-driver-doesnt-release-connections-then-errors it doesn't really close the connections used, there's a way to know how ...
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1answer
99 views

Should I move ORDER BY to app?

I noticed this discussion on NOT using ORDER BY in SQL query unless really necessary. https://www.brentozar.com/archive/2019/10/how-to-think-like-the-sql-server-engine-adding-an-order-by/amp/ The ...
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0answers
22 views

Creating database wherein there are multiple tables with same fields under different categories

We have vehicle/equipment repair workshops located at different places, these workshops send a monthly report in a standard format in MS Word file (attached a sample copy)to the headquarter(HQ). The ...
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0answers
83 views

What would be an appropiate BatchSize for bulk insert 34 GB of data (JSON files) into SQL Azure?

I got like 25,000 JSON files whose size (in average) is 1.2 MB (also, the average of records per JSON is 5,000), and the total size is like 34 GB. I have been reviewed the BCP utility from SQL Server, ...
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1answer
65 views

Efficiently get first 10 results and total number of results

For a search page, I need the first 10 results and the total number of results of a query. That part is easy: SELECT TOP(10) ... FROM ... WHERE ... ORDER BY ... SELECT COUNT(*) FROM ... WHERE ... ...
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1answer
133 views

End of file reached. Error 38 in SQL. Passes verification checks

Having issues restoring a database in SSMS, error 38. The databases are transferred up to google via their Drive API. Download it on my side and has error. If I transfer it through teamviewer ...
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1answer
254 views

Facing permission error while trying to execute a stored procedure published through CLR

I've created a stored procedure using SQL CLR c# stored procedure in Visual Studio 2017 and I've published it in MSSQL Server. Now I can see my stored procedure, but I face this error when I want to ...
1
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1answer
178 views

This failure occured while attempting to connect to the Principle server

One of our clients recently came to us with a problem he's facing while working with our application. The error in the log file is the next: System.Data.SqlClient.SqlException (0x80131904): Timeout ...
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1answer
335 views

How to group by linq based on input parameter? [closed]

I want to use group by in C#, and my result must be like this code in SQL: SELECT MAX(EffectiveDate) AS EffectiveDate,details.PersonnelBaseID FROM dbo.tkp_PersonnelDetails AS details where details....
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1answer
69 views

Use table in database like in excel [closed]

I'm writing a program for my client in C# Winform. And the client gave this excel sheet. Process I have a table that used to calculate BULK amount of alcohol by "DIP" and "SLIDE". In excel I need ...
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0answers
63 views

Configure MSLocalDB in a .NET config file

I have created a .NET Standard C# project and a SQL database in my LocalDB server (LocalDb)\MSSQLLocalDB. I have tried to configure the connection string in the project web configuration file but in ...
0
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1answer
37 views

How do you combine the input of three parameters into one?

I'm working on a query that will run via C# to SQL server. I'm trying to make the query flexible and provide parameters for all the inputs. Here is the query: SELECT Test_Matrix.tblTestMatrix....
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0answers
525 views

How can I figure out the root cause of “Out of range value for column” error in MySQL

I have a console app written with C# on the top of .Net Core 2.2 framework with EntityFrameworkCore as ORM. My application runs various tasks that run every 15 minutes. Each task calls an external API ...
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0answers
59 views

Database design for multilingual tags

I'm looking for a simple database design for tags, where the tag-label can be translated (multilingual). I'm currently looking at Toxi, which is a very simple and clean way of creating a tagging ...
2
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1answer
118 views

Bind dll in SQL Server

I have a little side project at my work. My task is to deploy some SQLCLR code into our dev-database (SQL Server 2017) to test it. If the tests are successfull, we want to develop triggers and ...
0
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1answer
213 views

Conditional insert vs UNIQUE constraint

https://stackoverflow.com/questions/4069718/postgres-insert-if-does-not-exist-already I would like to check if something exists before inserting it, what should I rely on? UNIQUE constraint or ...
3
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1answer
887 views

Error publishing SQLCLR C# Function using Visual Studio 2017

I'm trying to (learn) publish a SQLCLR function using Visual Studio 2017. (It's a simple function that sends an email.) As a reference I used this articles on CodeProject and MSSQLTips: Create, Run, ...
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1answer
88 views

How Can i Parse the sms text to textboxes [closed]

how can can i do this ? i can't get the return value and i can understand how regex work . string value = "+CMT:"+639231568462"," ","18/10/07,14:31:32+32" HELLO" "; Regex r = new Regex(""); ...
0
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1answer
354 views

Check if master is up from slave server(replication) postgresql

I want to check whether my master server is up by querying from slave server ? Is there any view or command ?
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2answers
337 views

Saving SSIS package from server to local computer

Right now I'm able to upload an SSIS package from my local computer to SQL Server with my C# program: Microsoft.SqlServer.Dts.Runtime.Application app; app = new Microsoft.SqlServer.Dts.Runtime....
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1answer
36 views

unable to add data to table because related record is required

I have an access database with my work that I am trying to insert into but I keep getting. 'You cannot add or change a record because a related record is required in table 'Projects'.' I'm running ...
3
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2answers
22k views

Before and After update trigger on same table

I have a table with 4 columns qty, qtydiff, price and value. I want a after update trigger that fires when qty row values change (more than one rows). The Before trigger should read and store the ...
1
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0answers
61 views

increment row and calculate amount - follow up question

This is a follow up to my original question, but anyone can answer nonetheless. Increment each row according to condition in SQL C# WITH upd AS ( SELECT [Bill No], Item_Name, ...
0
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1answer
504 views

How to ensure that row with same PK inserted replaces old row in MS SQL Server, instead of throwing exception of PK Violation?

I'm transferring bulk data from a C# DataTable into a SQL Server DB. The DataTable provides values for all 26 columns except the first column, which is an auto-incremental ID The schema skeleton is as ...
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0answers
1k views

Oracle Number (10, 0) decimal in (C#) code

The following query is executed to add a new column to an existing table: ALTER TABLE TABLE1 ADD COLUMN1 NUMBER(10, 0) DEFAULT -1 NOT NULL. Using DBForge to check the database, result in NUMBER (10, ...
1
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2answers
53 views

How to provide a SQL Server database with a C# application [closed]

I am working on a C# application which depends on a few SQL Server databases. Now, in my development environment, I am using SSMS (SQL Server Management Studio) to create and manage my databases. My ...
2
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3answers
817 views

Should I use SSIS to write programming logic?

I have come across a fairly complex system where the business logic is written in SSIS. Since SSIS is not able to perform a big portion of this logic, it is heavily dependent on C# script tasks to ...
2
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0answers
440 views

SSIS Script Component Not Logging

How can I log from within an SSIS Script Component? I am using the below code, which I believe should work. public override void PreExecute() { this.Log("Entering PreExecute()", 0, new byte[0]); ...
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1answer
1k views

how do you output a plsql array via ref cursor

I have a legacy procedure that returns a plsql assoc table to a C++ DLL. Now I need to call it via C# and ODP.NET. I have been unable to find any info on how to call a proc that returns a pl/sql ...
0
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1answer
172 views

Select data from a table and update a second table using most recent value [closed]

I have two table: Stampings and Registries. Stampings is populate from a program that read a CSV file and do an insert into the table. Some field into the table are: name, surname, card-code and ...
0
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1answer
353 views

Regular data transfer from SQL Server to MySQL

Our company uses an application with a SQL Server database where we store all of our Project Item data. Our company's Portal Website uses a MySQL database that holds other Project information (...
0
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3answers
114 views

SQL Server FullText searching on text that is slightly obfuscated before insert

Our app slightly obfuscates text before insertion to the database. This is done by the application (C#) and not the database. (This is not encryption but just to stop people who are looking at the ...
1
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1answer
1k views

What is the “Default Timeout” value in SQLite connection string used for?

I have looked at the SQLite documentation and I can't find anything clear about the value "Default Timeout". Looking at other websites, it seems to refer to some sort of "Connection timeout", while ...
2
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0answers
500 views

C# Windows Service task fails due to a SP timeout, but works fine after executing the SP in SSMS

I have a Windows Service app running and sometimes a task which has a method call to a stored procedure (with a Select operation) is keep failing due to a timeout. But when I execute that SP with ...
7
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1answer
646 views

Why would a foreign key from a table to itself cause a deadlock when running two deletes?

I have a database with a table "SelfRef". SelfRef has two fields: Id (guid, PK, not null) SelfRefId (guid, nullable) There is a foreign key constraint that maps the SelfRefId field back to the Id ...
0
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1answer
765 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'...
1
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1answer
156 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 ...
3
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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
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1answer
388 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
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3answers
10k 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 ...
1
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0answers
233 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 ...

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