Mysql Insert Statement Return Generated Keys

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Description: When connecting to MySQL 4.0.16 with a preparedstatement containing an INSERT statement using the constant Statement.RETURNGENERATEDKEYS hangs the servlet container after 7-10 uses of this type of statement. The servlet container hangs with no exception & subsequent requests fail. The driver will ignore the array if the SQL statement is not an INSERT statement, or an SQL statement able to return auto-generated keys (the list of such statements is vendor-specific). In some (uncommon) situations, a single SQL statement may return multiple result sets and/or update counts. Query the code lastinsertid/code. This returns the first id generated by your batch of rows. Then assume the next N consecutive id values are used by your batch of rows. This is a reliable method. If you read the source code for MySQL’s JD.

In this tutorial, you will learn how to use PreparedStatement object to insert data into MySQL table.

In the previous tutorial, we have shown you how to use the PreparedStatement object to update data. When you call the executeUpdate() method, you get the number of rows affected. When you insert a record into a table, you may want to get the inserted ID back to the program for further processing. Let’s see how we can do it.

First, as always, you open a new connection to MySQL. You can utilized the utility class MySQLJDBCUtil that we developed in the previous tutorial.

Then, you construct an INSERT statement with placeholders and create a new PreparedStatement object by calling the prepareStatement() method of the Connection object. You pass the INSERT statement as the first argument and an integer with value Statement.RETURN_GENERATED_KEYS as the the second argument to the method. The second argument instructs JDBC to give the inserted ID back.

Mysql multiple insert statements

Next, you supply values for placeholders by calling setYYY() method of the PreparedStatement object.

After that, you call the executeUpdate() method to execute the INSERT statement. This method returns the number of rows affected. We check the return value to see if the record has been inserted successfully.

Finally, to get the inserted id, you call the getGeneratedKeys() method of the PreparedStatement object. The method returns a ResultSet . You just need to get data out of this ResultSet as follows:

  1. Then, you construct an INSERT statement with placeholders and create a new PreparedStatement object by calling the prepareStatement method of the Connection object. You pass the INSERT statement as the first argument and an integer with value Statement.RETURNGENERATEDKEYS as the the second argument to the method. The second argument.
  2. Sorry for the stress of the names! RETURNGENERATEDKEYS is not the unique way to request the autogenerated keys, Connection.prepareStatement(String sql, String columnNames) is another way as JAVA API states: 'Creates a default PreparedStatement object capable of returning the auto-generated keys designated by the given array.
  3. Java prepared Statement get auto increment value after insert in MySQL How to get auto generated keys from MySQL database? PreparedStatement stmt = conn.prepareStatement(sql, PreparedStatement.RETURNGENERATEDKEYS); //.
  4. In fact I'd print the INSERT statement as well, as that seems to be generated. As well as each set of parameters you are setting in the batch. Because I have produced your basic structure there in 5.6 and it works fine (as expected), so it is going to be something to do with your setup, and you really need much more logging to track it down.

The following is the complete example of inserting data into the candidates table and get the inserted ID back.

Mysql Insert Statement Example

Let’s run the program.

C# Mysql Insert Return Identity

It shows that you have successfully inserted a new candidate into the candidates table with id 134.

Mysql Insert Statement Return Generated Keys In Excel

In this tutorial, we have shown you how to use PreparedStatement object to insert a new record into a MySQL table and get the inserted ID back for further processing.