Postgres error: null value in column id - during insert operation
You aren't inserting a value for id
. Since you don't explicitly set it, it's implicitly given a null
value, which is, of course, not a valid value for a primary key column. You can avoid this entire situation by defining this column as serial
instead of a plain old integer
, and leave all the heavy lifting to the database.
PostgreSQL: Not null violation: 7 ERROR: null value in column id violates not-null constraint
Make sure your id
column has a default:
ALTER TABLE acme_search_item
ALTER COLUMN id SET DEFAULT nextval('acme_search_item_id_seq');
You can view current defaults in the information schema tables:
SELECT column_name
, column_default
FROM information_schema.columns
WHERE table_name = 'acme_search_item'
ORDER BY
ordinal_position;
null value in column violates not-null constraint PostgreSQL
In your table trendmania_video
, you have v_id
to be not null which causes this issue. You one option is to get ride of the not null constrain:
ALTER TABLE public.trendmania_video ALTER COLUMN v_id DROP NOT NULL;
If this is a new table then it's better to recreate it with a new table with an auto-cremented id
while v_id
is another value.
CREATE TABLE trendmania_video(
id SERIAL PRIMARY KEY,
v_id VARCHAR
--the rest of the columns
);
23502: null value in column id violates not-null constraint in postgreSQL
Looks like Entity Framework auto insert a value to the column.
After I add the script to prevent this issue, it works fine now.
[DatabaseGenerated(DatabaseGeneratedOption.None)]
Model would like:
public partial class ERRORLOG
{
[Key]
[DatabaseGenerated(DatabaseGeneratedOption.None)]
public long ID { get; set; } = DateTimeOffset.Now.ToUnixTimeMilliseconds();
public string MESSAGE { get; set; }
}
EF Core - null value in column Id of relation table violates not-null constraint
Your entity configuration does not autoincrement the Id.
Update VeganItem COnfiguration and Add this line in addition to AddKey.
veganItem.Property(e => e.Id).IsRequired().ValueGeneratedOnAdd();
ERROR: null value in column id violates not-null constraint
You have to skip id
in the INSERT
operation:
INSERT INTO assignments(account_id, l_id, ...)
VALUES
(1, 1, ...)
The id
will automatically get the next sequence number, since it is an auto-increment field.
ERROR: null value in column id of relation xxx violates not-null constraint - Spring Data JPA
For it to work, you have to change somethings in your Product table.
@GeneratedValue(strategy = GenerationType.IDENTITY) just work if your ID column is SERIAL type.
Check if the ID column is that type. Example:
CREATE TABLE Product(
id SERIAL NOT NULL,
name VARCHAR(20),
etc...
)
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