Updating records in sql

You will be given questions that you need to solve.After each exercise, we provide the solution so you can check your answer.

updating records in sql-15updating records in sql-53updating records in sql-59

Import required packages import *; public class JDBCExample { // JDBC driver name and database URL static final String JDBC_DRIVER = "com.

Driver"; static final String DB_URL = "jdbc:mysql://localhost/STUDENTS"; // Database credentials static final String USER = "username"; static final String PASS = "password"; public static void main(String[] args) { Connection conn = null; Statement stmt = null; try{ //STEP 2: Register JDBC driver Name("com.

Driver"); //STEP 3: Open a connection println("Connecting to a selected database..."); conn = Driver Connection(DB_URL, USER, PASS); println("Connected database successfully..."); //STEP 4: Execute a query println("Creating statement..."); stmt = conn.create Statement(); String sql = "UPDATE Registration " + "SET age = 30 WHERE id in (100, 101)"; stmt.execute Update(sql); // Now you can extract all the records // to see the updated records sql = "SELECT id, first, last, age FROM Registration"; Result Set rs = stmt.execute Query(sql); while(rs.next()){ //Retrieve by column name int id = Int("id"); int age = Int("age"); String first = String("first"); String last = String("last"); //Display values print("ID: " + id); print(", Age: " + age); print(", First: " + first); println(", Last: " + last); } rs.close(); }catch(SQLException se){ //Handle errors for JDBC se.print Stack Trace(); }catch(Exception e){ //Handle errors for Name e.print Stack Trace(); }finally{ //finally block used to close resources try{ if(stmt!

=null) conn.close(); }catch(SQLException se){ }// do nothing try{ if(conn!

=null) conn.close(); }catch(SQLException se){ se.print Stack Trace(); }//end finally try }//end try println("Goodbye! ID: 100, Age: 30, First: Zara, Last: Ali ID: 101, Age: 30, First: Mahnaz, Last: Fatma ID: 102, Age: 30, First: Zaid, Last: Khan ID: 103, Age: 28, First: Sumit, Last: Mittal Goodbye!

"); }//end main }//end JDBCExample java JDBCExample Connecting to a selected database...

UPDATE summary_data SET current_category = (SELECT category_id FROM products WHERE products.product_id = summary_data.product_id) WHERE EXISTS (SELECT category_id FROM products WHERE products.product_id = summary_data.product_id); If you want to test your skills using the SQL UPDATE statement, try some of our practice exercises.

These exercises allow you to try out your skills with the UPDATE statement.

Because only one exception can be raised at a time in a session, it doesn’t make any sense to allow you to check for two (or more) exceptions in a single handler.

For full explanations of both of these answers, visit plsqlchallenge.com, register or log in, and click the Closed/Taken tab in Play a Quiz.

The Oracle PL/SQL language was designed to be a portable, high-performance transaction processing language that is tightly integrated with the SQL language.

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