mysql - 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.createSQLException(SQLError.java:946)
    at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:2985)
    at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1631)
    at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:1723)
    at com.mysql.jdbc.Connection.execSQL(Connection.java:3277)
    at com.mysql.jdbc.Statement.executeUpdate(Statement.java:1402)
    at com.mysql.jdbc.Statement.executeUpdate(Statement.java:1317)

Everyone can help me ? my database fields are not empty . but i want to get this results:

insert into xxx(name,password)values('xxx','xxx'); and insert into xxx(name,password,man)values('xxx','xxx','xxx'); both success (both of that in client is success ,but in java code is error,error code at top title), instead of insert into xxx(name,password)values('xxx','xxx') is false; my mysql jar is mysql-connector-java-5.0.8

Answer 1

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;