Updating table with integer values using jdbc in servlets

Before version 3.0 of the JDBC API, there was no standard way of retrieving key values from databases that supported auto increment or identity columns.

updating table with integer values using jdbc in servlets-51

JDBC batch statements are processed through Statement and Prepared Statement methods.

This tutorial is aimed to provide details about JDBC Batch insert example for My SQL and Oracle database.

We will look into different programs so we have a project with structure as below image.

Today we will look into JDBC Batch insert and update examples in My SQL and Oracle databases.

Sometimes we need to run bulk queries of similar kind for a database, for example loading data from CSV files to relational database tables.

As we know that we have option to use to execute queries.Apart from that JDBC provides Batch Processing feature through which we can execute bulk of queries in one go for a database.stmt = conn.create Statement(); // // Issue the DDL queries for the table for this example // stmt.execute Update("DROP TABLE IF EXISTS auto Inc Tutorial"); stmt.execute Update( "CREATE TABLE auto Inc Tutorial (" + "pri Key INT NOT NULL AUTO_INCREMENT, " + "data Field VARCHAR(64), PRIMARY KEY (pri Key))"); // // Insert one row that will generate an AUTO INCREMENT // key in the 'pri Key' field // stmt.execute Update( "INSERT INTO auto Inc Tutorial (data Field) " + "values ('Can I Get the Auto Increment Field?')"); // // Use the My SQL LAST_INSERT_ID() // function to do the same thing as get Generated Keys() // int auto Inc Key From Func = -1; rs = stmt.execute Query("SELECT LAST_INSERT_ID()"); if (rs.next()) { auto Inc Key From Func = Int(1); } else { // throw an exception from here } println("Key returned from " + "'SELECT LAST_INSERT_ID()': " + auto Inc Key From Func); } finally { if (rs ! CONCUR_UPDATABLE); // // Issue the DDL queries for the table for this example // stmt.execute Update("DROP TABLE IF EXISTS auto Inc Tutorial"); stmt.execute Update( "CREATE TABLE auto Inc Tutorial (" + "pri Key INT NOT NULL AUTO_INCREMENT, " + "data Field VARCHAR(64), PRIMARY KEY (pri Key))"); // // Example of retrieving an AUTO INCREMENT key // from an updatable result set // rs = stmt.execute Query("SELECT pri Key, data Field " + "FROM auto Inc Tutorial"); To Insert Row(); rs.update String("data Field", "AUTO INCREMENT here?= null) { try { rs.close(); } catch (SQLException ex) { // ignore } } if (stmt ! "); rs.insert Row(); // // the driver adds rows at the end // rs.last(); // // We should now be on the row we just inserted // int auto Inc Key From RS = Int("pri Key"); println("Key returned for inserted row: " + auto Inc Key From RS); } finally { if (rs != null) { try { stmt.close(); } catch (SQLException ex) { // ignore } } } Statement stmt = null; Result Set rs = null; try { // // Create a Statement instance that we can use for // 'normal' result sets as well as an 'updatable' // one, assuming you have a Connection 'conn' to // a My SQL database already available // stmt = conn.create Statement( = null) { try { rs.close(); } catch (SQLException ex) { // ignore } } if (stmt !

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