java.sql.SQLException:字段"supplier_id"没有默认值 [英] java.sql.SQLException: Field 'supplier_id' doesn't have a default value

问题描述

我收到一条错误消息:

 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)

每个人都可以帮助我吗? 我的数据库字段不为空. 但我想得到这个结果:

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'); 和insert into xxx(name,password,man)values('xxx','xxx','xxx'); 两者都成功(在客户端中都是成功，但是在Java代码中是error，错误代码位于标题的顶部)，而不是insert into xxx(name,password)values('xxx','xxx')是false； 我的mysql jar是mysql-connector-java-5.0.8

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

推荐答案

该错误不言自明.您的列supplier_id没有默认值.因此，在插入期间，mysql无法找出要在列supplier_id中插入的内容.您可以做以下三件事之一:-
1.将默认值添加到supplier_id使用-

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.在插入过程中为supplier_id列提供一些值.
3.在该列中添加一个自动增量，并使用以下代码向其添加主键:-

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;

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