java.sql.SQLException: Field 'supplier_id' doesn't have a default value

Question

I got an error message from this：

 java.sql.SQLException: Field \'supplier_id\' doesn\'t have a default value
    at com.mysql.jdbc.SQLError.createSQLExcepti         


        

Answer 1

You are using table where you have supplier_id column . it does not have default value ,at insertion time this column not getting any value . initialize supplier_id column with some default value , or use auto increment if you are using supplier_id as a primary key.

Answer 2

I added this property

<property name="hbm2ddl.auto">create</property>

into hibernate.cfg.xml file, and it worked for me.

Answer 3

In my case, the problem was that the primary key column was not set as AUTO_INCREMENT

Here's how I solved it:

alter table library modify column Id int NOT NULL AUTO_INCREMENT;

Answer 4

To solve this, either supply a value for supplier_id when you do the INSERT, or make the column nullable in the DB.

Answer 5

The error is self explanatory. Your column supplier_id does not have a default value. So during insertion, mysql cannot figure out what to insert in the column supplier_id. You can do either of the three things :-
1. Add a default value to the column supplier_id Using -

ALTER TABLE `xxx` ALTER `supplier_id` SET DEFAULT NULL

2. Supply some value to the supplier_id column during insertion.
3. Add an auto increment to the column and add a primary key to it using the code :-

ALTER TABLE `xxx` CHANGE `supplier_id` `supplier_id` INT(10)AUTO_INCREMENT PRIMARY KEY;

Answer 6

There might be two cases.

1. You have declared the column's default value as NONE and are not not passing any value to it while inserting.

2. You have declared the column in database, but you have not declared the same in your entity object, which is causing the error.