Mysql Jdbc Return_generated_keys

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  1. Mysql Jdbc Connection String
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Dec 25, 2019 Support multiple JDBC driver class names (MySQL introduced a new driver class name with its 6.x connector) JDBC-172. Allow with-db-connection and with-db-metadata to nest JDBC-171. Release 0.7.7 on 2018-06-23. Support:as-arrays?,:result-set-fn, and:row-fn in operations that return generated keys as a result set (execute!, insert!, and insert. Import java.sql.Connection; import java.sql.DriverManager; import java.sql.ResultSet; import java.sql.Statement; public class Main. The following are Jave code examples for showing how to use getGeneratedKeys of the java.sql.Statement class. You can vote up the examples you like. Your votes will be used in our system to get more good examples. Problem with Statement.RETURNGENERATEDKEYS ra.416892.us Mar 15, 2004 4:05 PM Dear Colleagues, I am using Oracle 9i Enterprise Edition Release 9.2.0.1.0 with Java 1.4.101 on Red Hat Linux 8.0 and I am observing the following problem. Mar 16, 2004  Problem with Statement.RETURNGENERATEDKEYS ra.416892.us Mar 15, 2004 4:05 PM Dear Colleagues, I am using Oracle 9i Enterprise Edition Release 9.2.0.1.0 with Java 1.4.101 on Red Hat Linux 8.0 and I am observing the following problem.

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JDBCObject Oriented ProgrammingProgramming

While creating a table, in certain scenarios, we need values to column such as ID, to be generated/incremented automatically. Various databases support this feature in different ways.

Generate public key from ppk mac. In MySQL database you can declare a column auto increment using the following syntax.

While inserting records in a table there is no need to insert value under the auto-incremented column. These will be generated automatically.

For example, in a table if we have a column with name ID and data type INT, which is auto-incremented and, if we already have 6 records in that table. When you insert the next record using the INSERT statement the ID value of the new record will be 7 and the ID value of its next record will be 8.

(You can specify the initial value and interval for these auto-incremented columns).

Retrieving the auto-incremented values

If you insert records into a table which contains auto-incremented column, using a PreparedStatement object.

You can retrieve the values of that particular column, generated by the current PreparedStatement object using the getGeneratedKeys() method.

Example

Let us create a table with name sales in MySQL database, with one of the columns as auto-incremented, using CREATE statement as shown below −

Now, to insert records into this table using PreparedStatement object and, to retrieve the auto-incremented values generated by it −

  • Register the Driver class of the desired database using the registerDriver() method of the DriverManager class or, the forName() method of the class named Class.
  • Create a Connection object by passing the URL of the database, user-name and password of a user in the database (in string format) as parameters to the getConnection() method of the DriverManager class.
  • Create a PreparedStatement object using the prepareStatement() method of the connection interface.

To this method pass the INSERT statement with bind variables in string format as one parameter and, Statement.RETURN_GENERATED_KEYS as other parameter as −

  • Set values of each record to the bind variables using the setXXX() methods and, add it to batch.

After adding values of all the records to the batch, execute the batch using the executeBatch() method.

  • Finally, get the auto-incremented keys generated by this PreparedStatement object using the getGeneratedKeys() method.

Following JDBC program inserts 5 records into the Sales table (created above) using PreparedStatement, retrieves and displays the auto-incremented values generated by it.

Mysql Jdbc Connection String

Mysql

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  • Related Questions & Answers
  • Selected Reading
JDBCObject Oriented ProgrammingProgramming

If you insert records into a table which contains auto-incremented column, using a Statement or, PreparedStatement objects.

You can retrieve the values of that particular column, generated by them object using the getGeneratedKeys() method.

Mysql Jdbc Return_generated_keys Free

Example

Let us create a table with name sales in MySQL database, with one of the columns as auto-incremented, using CREATE statement as shown below −

Mysql Jdbc Driver

Retrieving auto-generated values (PreparedStatement object)

Following JDBC program inserts 3 records into the Sales table (created above) using PreparedStatement, retrieves and displays the auto-incremented values generated by it.

Mysql Jdbc Connector Jar Download

Example

Output

Retrieving auto-generated values (Statement object)

Following JDBC program inserts 3 records into the Sales table (created above) using Statement, retrieves and displays the auto-incremented values generated by it.

Mysql Jdbc Example

Output