All Questions
Tagged with entity-framework-core npgsql
330
questions
0
votes
1
answer
26
views
Confused about NpgSql connection pooling vs AddDbContextPool
I'm trying to implement database pooling in my .net core application that's connecting to PostgreSql db. While reading documentation on NpgSql, It states that pooling is avaible in the this library (...
- 23
0
votes
0
answers
21
views
MSDataSetGenerator generates references to obsolete type NpgsqlTypes.NpgsqlDbType.TimestampTZ
Like the title says, in my .Net Core 8 project, MSDataSetGenerator generates references to obsolete type TimestampTZ instead of TimestampTz (note the case difference!). Every time I change my .xsd ...
- 315
2
votes
1
answer
65
views
How to correctly use 2 different DbContexts using Entity Framework Core to connect to postgres reader instance, writer instance
I have 2 database (AWS Aurora Postgres) instances - reader instance and writer instance. There are 2 different connection strings for the instances and I want to utilize both instances.
I want to use ...
- 21
0
votes
0
answers
41
views
Adding a match type to a foreign key with EF Core and Npgsql
When creating a foreign key that references multiple nullable columns in Postgresql it's possible to add a match type of "MATCH FULL" on the foreign key to ensure that all values are either ...
- 517
0
votes
0
answers
60
views
EF Core mechanisms in .NET Core to handle concurrency issues
I am just starting to learn about concurrent processing in EF Core to make consistent applications and I have some questions, Microsoft documentation says the following:
using var context = new ...
0
votes
1
answer
68
views
Is there a way to set IP address as primary key with EF Core (Npgsql)
Entity:
public class IPAddressInformation
{
public IPAddress Address { get; set; }
// ...
}
Configuration:
public void Configure(EntityTypeBuilder<IPAddressInformation> builder)
{
...
- 376
1
vote
2
answers
79
views
How can I modify my EF Core query to include an array conversion
Problem Statement
I am using Entity Framework (EF) Core and PostgreSQL. In my target table, there is a JSONB column that might contain a version number. My goal is to sort the query by this version ...
- 752
0
votes
0
answers
8
views
Is it possible to have a secondary mapping of a field(json) in NPGSQL/EF Core for querying purposes only?
I have a very dynamic json data(extracted from a diagnostic tool) and mapping everything is very tedious, and there's a possibility that the data content might change, so I have to store everything.
...
- 932
0
votes
1
answer
53
views
How to suppress warning about constant primary key? Microsoft.EntityFrameworkCore.Model.Validation[20600]
I have a table defined to have exactly one row, by using a boolean primary key and a unique constraint. The idea behind this was based on this post from ten years ago: One-Row by Brandstetter. This is ...
- 276
0
votes
0
answers
29
views
Can't convert a record from PostgreSQL with EF Core to a usable
I struggle to get the result of a SqlQueryRaw (EF Core) from a PostgreSQL db.
I have the following query :
select
case
when ... then (col1, col2)
when ... then
...
- 13
1
vote
1
answer
43
views
PostgreSQL view column NOT NULL is not persist when reverse engineering using Entity Framework Core [duplicate]
I worked with EF Core and SQL Server using database first approach. It is Ok for me to use dotnet-ef CLI for reverse engineering both tables and views. It preserves nullability of select columns from ...
0
votes
2
answers
109
views
Dynamically specify which table to query at runtime
I have many tables that can be fetched. Right now, for each table I have a Controller class that gets the request, applies the query params and paging, and finally returns the result. All of them are ...
- 376
0
votes
2
answers
377
views
Conditionally include and filter related entities in EF Core 8
How can I query the Employees and Holidays collections so that even if no holidays are found matching their specified criteria, the employees matching their criteria are still returned?
Entities:
...
- 2,469
1
vote
1
answer
46
views
Is supported string aggregates on Entity Framework Core using NPGSQL?
I'm trying to translate this PostgreSQL query to Linq using Npgsql:
var result = _dbContext.Substrates.FromSql(@$"SELECT
vs.*,
...
- 1,179
0
votes
1
answer
47
views
How to map encrypted DateOnly to text in PostgreS
In an ASP.NET Core 8 Web API, I need to store a C# DateOnly entity property in a PostgreSQL text column after encrypting using Npgsql.EntityFrameworkCore.PostgreSQL (8.0.2) and EntityFrameworkCore....
- 11