I'm a complete novice in Java programming but I'm hammering away. I have searched extensively but I can't figure it out even though many fellow beginner programmers have had the same problem..
I have is this Java <> MySQL problem, and I can't wrap my head around it!
If I execute this query in phpMyAdmin:
SET count = 0; UPDATE tablename SET table_id = count:= count + 1;
ALTER TABLE tablename AUTO_INCREMENT = 1;
It works as I want it to, reset ID (after I delete a row) it may not be the most elegant solutions but it gets the job done.
But as soon as I execute the same query from eclipse my console lights up like a Christmas tree and I get a:
com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: You have an
error in your SQL syntax; check the manual that corresponds to your
MySQL server version for the right syntax to use near 'UPDATE
tablename SET table_id = @count:= @count + 1; ALTER TABLE tablename
AU' at line 1
Error... check my syntax. It works in phpMyAdmin.
My Eclipse Java method:
public void resetDBID(){
try{
// query to reset menu_id manly after delete row
Statement statement = con.connection.createStatement();
String sset;
sset = "SET @count = 0; "
+ "UPDATE afhaalmenus SET menu_id = @count:= @count + 1; "
+ "ALTER TABLE afhaalmenus AUTO_INCREMENT = 1;";
statement.execute(sset);
} catch(SQLException ex){
String message = "rest ID fail";
JOptionPane.showMessageDialog(null, message, "method fail", JOptionPane.INFORMATION_MESSAGE);
ex.printStackTrace();
}
}
What is it that I'm missing here? Or doing wrong...
Thanks in advance for all of your help!