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Here s the solution: import java.util.*; import java.io.*; import java.sql.*;
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CHAPTER 12 WORKING WITH THE PREPAREDSTATEMENT
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import jcb.util.DatabaseUtil; import jcb.db.VeryBasicConnectionManager; public class Insert_Records_Using_PreparedStatement { public static void main(String[] args) { String dbVendor = args[0]; // { "mysql", "oracle" } int deptNumber = Integer.parseInt(args[1]); String deptName = args[2]; String deptLocation = args[3]; Connection conn = null; PreparedStatement pstmt = null; try { System.out.println("--Insert_Records_... begin--"); conn = VeryBasicConnectionManager.getConnection(dbVendor); System.out.println("conn="+conn); System.out.println("deptNumber= "+ deptNumber); System.out.println("deptName= "+ deptName); System.out.println("deptLocation= "+ deptLocation); // prepare query String query = "insert into dept(DEPT_NUM, DEPT_NAME, DEPT_LOC) " + "values( , , )"; pstmt = conn.prepareStatement(query); // pstmt.setInt(1, deptNumber); // pstmt.setString(2, deptName); // pstmt.setString(3, deptLocation); // pstmt.executeUpdate(); // System.out.println("--Insert_Records_... } catch(Exception e){ e.printStackTrace(); System.exit(1); } finally { // release database resources DatabaseUtil.close(pstmt); DatabaseUtil.close(conn); } } } create a statement set input parameter 1 set input parameter 2 set input parameter 3 execute insert statement end--");
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Setting Up the Oracle Database
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This shows how to set up the Oracle database: SQL> desc dept; Name ------------------DEPT_NUM DEPT_NAME DEPT_LOC Null -------NOT NULL Type -------------NUMBER(2) VARCHAR2(14) VARCHAR2(13)
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SQL> select * from dept;
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DEPT_NUM ---------10 20 30 40
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DEPT_NAME -------------ACCOUNTING RESEARCH SALES OPERATIONS
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DEPT_LOC --------NEW YORK DALLAS CHICAGO BOSTON
Running the Solution for the Oracle Database
This shows how to run the solution for the Oracle database: $ javac Insert_Records_Using_PreparedStatement.java $ java Insert_Records_Using_PreparedStatement oracle 60 Marketing "Los Gatos" --Insert_Records_... begin-conn=oracle.jdbc.driver.OracleConnection@edc3a2 deptNumber= 60 deptName= Marketing deptLocation= Los Gatos --Insert_Records_... end-$ java Insert_Records_Using_PreparedStatement oracle 70 Sports Cupertino --Insert_Records_... begin-conn=oracle.jdbc.driver.OracleConnection@edc3a2 deptNumber= 70 deptName= Sports deptLocation= Cupertino --Insert_Records_... end--
Viewing the Oracle Database After Running the Solution
This shows the Oracle database after running the solution: SQL> select * from dept; DEPT_NUM ---------10 20 30 40 60 70 DEPT_NAME -------------ACCOUNTING RESEARCH SALES OPERATIONS Marketing Sports DEPT_LOC --------NEW YORK DALLAS CHICAGO BOSTON Los Gatos Cupertino
Setting Up the MySQL Database
This shows how to set up the MySQL database: mysql> desc dept; +-----------+-------------+------+-----+---------+-------+ | Field | Type | Null | Key | Default | Extra | +-----------+-------------+------+-----+---------+-------+ | dept_num | int(11) | | PRI | 0 | | | dept_name | varchar(14) | YES | | NULL | | | dept_loc | varchar(14) | YES | | NULL | | +-----------+-------------+------+-----+---------+-------+ 3 rows in set (0.00 sec)
CHAPTER 12 WORKING WITH THE PREPAREDSTATEMENT
mysql> select * from dept; +----------+------------+----------+ | dept_num | dept_name | dept_loc | +----------+------------+----------+ | 10 | Accounting | New York | | 20 | Research | Dallas | | 30 | Sales | Chicago | | 40 | Operations | Boston | +----------+------------+----------+ 4 rows in set (0.00 sec)
Running the Solution for the MySQL Database
This shows how to run the solution for the MySQL database: $ javac Insert_Records_Using_PreparedStatement.java $ java Insert_Records_Using_PreparedStatement mysql 60 Marketing "Los Gatos" --Select_Records_... begin-conn=com.mysql.jdbc.Connection@8fce99 deptNumber= 60 deptName= Marketing deptLocation= Los Gatos --Select_Records_... end-$ java Insert_Records_Using_PreparedStatement mysql 70 Sports Cupertino --Select_Records_... begin-conn=com.mysql.jdbc.Connection@8fce99 deptNumber= 70 deptName= Sports deptLocation= Cupertino
12-23. How Do You Update an Existing Record Using PreparedStatement
The following sections show how to update an existing record of a table using a PreparedStatement object.
How It Works
The following example creates a PreparedStatement object to update an existing record of the dept table (this program updates department locations for a given department number). The example uses a SQL UPDATE statement to update data for a table.
Solution
Here s the solution: import java.util.*; import java.io.*; import java.sql.*; import jcb.util.DatabaseUtil; import jcb.db.VeryBasicConnectionManager; public class Update_Records_Using_PreparedStatement {
CHAPTER 12 WORKING WITH THE PREPAREDSTATEMENT
public static void main(String[] args) { String dbVendor = args[0]; // { "mysql", "oracle" } int deptNumber = Integer.parseInt(args[1]); String deptLocation = args[2]; Connection conn = null; PreparedStatement pstmt = null; try { System.out.println("--Update_Records_... begin--"); conn = VeryBasicConnectionManager.getConnection(dbVendor); System.out.println("conn="+conn); System.out.println("deptNumber= "+ deptNumber); System.out.println("deptLocation= "+ deptLocation); // prepare query String query = "update dept set DEPT_LOC pstmt = conn.prepareStatement(query); // pstmt.setString(1, deptLocation); // pstmt.setInt(2, deptNumber); // pstmt.executeUpdate(); // System.out.println("--Update_Records_... } catch(Exception e){ e.printStackTrace(); System.exit(1); } finally { // release database resources DatabaseUtil.close(pstmt); DatabaseUtil.close(conn); } } }
= where DEPT_NUM = "; create a statement set input parameter 1 set input parameter 2 execute update statement end--");
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