在将数据插入具有自动递增列的表中时,只需保留该特定列,并使用INSERT语句的以下语法指定其余列即可插入剩余值-
INSERT into table_name (column_name1, column_name2....) values(value1, value2....)
让我们使用CREATE语句在MySQL数据库中创建一个名称为sales的表,其中一列自动递增,如下所示-
CREATE TABLE Sales( ID INT PRIMARY KEY AUTO_INCREMENT, ProductName VARCHAR (20), CustomerName VARCHAR (20), DispatchDate date, DeliveryTime time, Price INT, Location VARCHAR(20) );
以下JDBC程序与数据库建立连接,并将5条记录插入到sales表中-
import java.sql.Connection; import java.sql.Date; import java.sql.DriverManager; import java.sql.PreparedStatement; import java.sql.SQLException; import java.sql.Time; public class InsertingData_AutoIncrement { public static void main(String args[]) throws SQLException { //注册驱动程序 DriverManager.registerDriver(new com.mysql.jdbc.Driver()); //获得连接 String mysqlUrl = "jdbc:mysql://localhost/sample_database"; Connection con = DriverManager.getConnection(mysqlUrl, "root", "password"); System.out.println("Connection established......"); //查询以将值插入销售表 String insertQuery = "INSERT INTO Sales (ProductName, CustomerName, DispatchDate, DeliveryTime, Price, Location) VALUES (?, ?, ?, ?, ?, ?)"; //创建一个PreparedStatement对象 PreparedStatement pstmt = con.prepareStatement(insertQuery); pstmt.setString(1, "Key-Board"); pstmt.setString(2, "Raja"); pstmt.setDate(3, new Date(1567315800000L)); pstmt.setTime(4, new Time(1567315800000L)); pstmt.setInt(5, 7000); pstmt.setString(6, "Hyderabad"); pstmt.execute(); pstmt.setString(1, "Earphones"); pstmt.setString(2, "Roja"); pstmt.setDate(3, new Date(1556688600000L)); pstmt.setTime(4, new Time(1556688600000L)); pstmt.setInt(5, 2000); pstmt.setString(6, "Vishakhapatnam"); pstmt.execute(); pstmt.setString(1, "Mouse"); pstmt.setString(2, "Puja"); pstmt.setDate(3, new Date(1551418199000L)); pstmt.setTime(4, new Time(1551418199000L)); pstmt.setInt(5, 3000); pstmt.setString(6, "Vijayawada"); pstmt.execute(); pstmt.setString(1, "Mobile"); pstmt.setString(2, "Vanaja"); pstmt.setDate(3, new Date(1551415252000L)); pstmt.setTime(4, new Time(1551415252000L)); pstmt.setInt(5, 9000); pstmt.setString(6, "Chennai"); pstmt.execute(); pstmt.setString(1, "Headset"); pstmt.setString(2, "Jalaja"); pstmt.setDate(3, new Date(1554529139000L)); pstmt.setTime(4, new Time(1554529139000L)); pstmt.setInt(5, 6000); pstmt.setString(6, "Goa"); pstmt.execute(); System.out.println("Records inserted......"); } }
输出结果
Connection established...... Records inserted......
如果您使用SELECT语句验证Sales表的内容,则可以看到插入的记录为-
mysql> select * from sales; +----+-------------+--------------+--------------+--------------+-------+----------------+ | ID | ProductName | CustomerName | DispatchDate | DeliveryTime | Price | Location | +----+-------------+--------------+--------------+--------------+-------+----------------+ | 1 | Key-Board | Raja | 2019-09-01 | 11:00:00 | 7000 | Hyderabad | | 2 | Earphones | Roja | 2019-05-01 | 11:00:00 | 2000 | Vishakhapatnam| | 3 | Mouse | Puja | 2019-03-01 | 10:59:59 | 3000 | Vijayawada | | 4 | Mobile | Vanaja | 2019-03-01 | 10:10:52 | 9000 | Chennai | | 5 | Headset | Jalaja | 2019-04-06 | 11:08:59 | 6000 | Goa | +----+-------------+--------------+--------------+--------------+-------+----------------+ 5 rows in set (0.00 sec)