All Questions
33,067
questions
0
votes
0
answers
55
views
Updating Database from DataSet with multiple tables
I have an application with an editor of multiple DataTables, that are stored in a DataSet which I load through a DataAdapter. My objective is to update the database with all the changes in all of the ...
- 1
0
votes
2
answers
44
views
Oracle parameterized query for explain plan in C#
I have an explain plan query and I need to call with parameters in my .Net application. When I try it as following it gives me ORA-1780 Error. I have many parameterized queries in my application but ...
- 81
0
votes
1
answer
75
views
How to ignore trailing whitespace? [duplicate]
Say a SQL table contains a column of char(10), and a record contains the value "ABC" in that column. Entity Framework will pass ABC ("ABC" with 7 trailing spaces) when asked ...
- 150
-2
votes
2
answers
101
views
Get particular value from string in SQL query
I am working with a stored procedure where I am getting a string with different characters I want to get a value at last index
[AV] Z_Prem_454-3000_XXXXX_800+ [InstalmentScheme 6]
above is the string ...
- 115
1
vote
2
answers
62
views
Read a SQL-DOUBLE column as raw
I have data defined as double saved in a PSQL-Database (Actian) and I'm using DbDataReader to read the values. I know I can use GetDouble to read the value, but I would like read the raw value into a ...
- 121
1
vote
1
answer
198
views
Converting System.String to System.Guid
I'm currently having a bit of a problem trying to convert a string with guid behaviour inside my database to convert to an actual Guid in my application. I have tried a lot of things, which currently ...
- 161
0
votes
1
answer
42
views
nullreferenceexception from ExecuteScalar()
I really don't know what to write here. I was just coding and this stuff happened.
connection.Open();
SqlCommand cmd = connection.CreateCommand();
cmd.CommandText = "select count(*) from ...
- 1
0
votes
1
answer
33
views
Transaction Log for database is full because update file about 100mb
I try to insert the data of a file about 100mb in size by splitting it into parts, each about 65,000 characters into the sql server. The first time I insert it and the next time I update that data. ...
- 1
1
vote
1
answer
70
views
PostgreSQL query returning different results in DbEaver and C# (Dapper/ADO.NET) despite same server connection
It's currently 1:15 AM on April 23rd, 2024. My timezone is GMT +7. I have a C# application and a DbEaver application both connecting to the same PostgreSQL server. I execute a very simple query as ...
- 697
-2
votes
1
answer
84
views
How do I convert this Knuth hash code in C# to the SQL equivalent?
Can anyone help me to convert the C# code below (Knuth hash) to the SQL equivalent?
/// <summary>
/// https://stackoverflow.com/a/9545731
/// </summary>
static string CalculateHash(string ...
- 485
1
vote
1
answer
243
views
Dapper how to pass object with list of objects into stored procedure
I have a problem with executing an existing stored procedure using Dapper. The stored procedure takes some parameters and list of user-defined type object. I mimicked the required parameters in C#, ...
- 540
0
votes
1
answer
66
views
Is there a way to enforce a specific JSON structure for JSON column?
I have a column in my table that will hold JSON objects. I currently have the column defined as MY_JSON_COLUMN NVARCHAR(MAX)
Is there a way to make sure the JSON adheres to a specific structure?
For ...
- 1,153
0
votes
2
answers
46
views
sql difficulties counting one column and getting the oldest id with the same content
I'm making a school project in mvc .net core, where people should be able to send in a request for help and it will show on a screen, my difficulties comes with the part that other people should be ...
- 9
1
vote
1
answer
59
views
Using FromSql or FromSqlInterpolated
According to this documentation (https://www.learnentityframeworkcore.com/raw-sql/from-sql) you should do this:
string value = "value";
_dbContext.Set<T>().FromSqlInterpolated($"...
- 597
0
votes
0
answers
133
views
using ajax with asp.net core mvc .NET 8 in visual studio 2022
I have a view that shows information from a sql tabel that I inserted in to a local DataTable I want to create a button that filters what is shown with ajax
this is the loop where the information from ...
- 1