Questions about foreign-keys
Read more about foreign-keys
python (65.1k questions)
javascript (44.2k questions)
reactjs (22.7k questions)
java (20.8k questions)
c# (17.4k questions)
html (16.3k questions)
r (13.7k questions)
android (12.9k questions)
Adding a foreign key constraint referencing to primary key columns
I am applying a foreign key constraint to a table(datareal.official). Should I always refer to the same columns in the primary key of the other tabel (datareal.officialcarriage). Or could I theoretica...
hering
Votes: 0
Answers: 0
Hasura Graphql does not return all documents when multiple foreign keys exist in a table to the same foreign field
Query:
user (where: { id: {_eq: 104}}) {
connections {
user1
user2
status
}
}
Response:
{
"data": {
"user": [
{
"id": 104...
Shivu D.G
Votes: 0
Answers: 1
Laravel Migration Error Foreign key constraint is incorrectly formed
This is the error showing every time.
Illuminate\Database\QueryException
SQLSTATE[HY000]: General error: 1005 Can't create table `codehacking`.`posts` (errno: 150 "Foreign key constraint i...
Md. Imrul Kayes
Votes: 0
Answers: 2
How to add foreign keys in multiple table in ASP.NET Core MVC code-first approach?
ApplicationDbContext.cs
public class ApplicationDbContext : DbContext
{
public ApplicationDbContext(DbContextOptions<ApplicationDbContext> options) : base(options)
{
}
...
Kaushik Ghosh
Votes: 0
Answers: 2