Question

I have the following mysql query in PHP and it works fine.

$strUpdate = "INSERT INTO  `batchfolder`.`newbatch` (`BatchID` ,`Batch` ,`barcode` ,`PG`)VALUES (NULL ,  '',  '1',  '')";

and is also fine when i run it directly in database.

However when I run it in java,

 try {
          conn = DriverManager.getConnection (url, userName, password);
          Statement st = conn.createStatement();
          st.execute("INSERT INTO  `batchfolder`.`newbatch` (`BatchID` ,`Batch` ,`barcode` ,`PG`)VALUES (NULL ,  '',  '1',  '')");            
          st.close();
}

It gives the following error.

Exception in thread "main" java.sql.SQLException: Field 'Pre' doesn't have a default value

Pre is the the next row in the database and it does not have a default value.

My question is, then how does this query run fine in mysql and php.

P.S BatchID is an int(10) autoincremented value in newbatch.

This is my table structure.

CREATE TABLE IF NOT EXISTS `newbatch` (
  `BatchID` int(10) NOT NULL AUTO_INCREMENT,
  `Batch` varchar(100) NOT NULL,
  `barcode` varchar(5) NOT NULL,
  `Ly` varchar(5) NOT NULL DEFAULT '0',
  `PG` varchar(5) NOT NULL,
  `Pre` varchar(5) NOT NULL,
  `Flu` varchar(5) NOT NULL,
  `FluID` varchar(100) DEFAULT NULL,
  `DateCreated` varchar(100) DEFAULT NULL,
  `Comments` varchar(500) DEFAULT NULL,
  PRIMARY KEY (`BatchID`),
  UNIQUE KEY `FluID` (`FluID`)
) ENGINE=MyISAM  DEFAULT CHARSET=latin1 AUTO_INCREMENT=1000160 ;

Answer 1

Are you absolutely sure this actually runs in PHP? You may just not be seeing the error message.

Try this again with display_errors = 'on' and error_reporting(E_ALL | E_STRICT);
This is a SQL error, it doesn’t depend on the driver. The driver just displays the message to you.

UPDATE:
It looks like Java is turning off MySQL’s strict mode for some reason. The only thing that (to my knowledge) should be able to cause this behavior is MySQL strict mode being off.

If strict mode is not enabled, MySQL sets the column to the implicit
default value for the column data type.

You can check the mode that your server is running on by SELECT @@GLOBAL.sql_mode;. Try that in both Java and PHP. If the results differ then that’s your answer.

UPDATE2: Jep!