import com.ayasoftware.ca.jdbc.CassandraDriver; import java.sql.*; Class.forName("com.ayasoftware.ca.jdbc.CassandraDriver"); String url = "jdbc:cassandra://localhost:9042/keyspace"; Connection connection = DriverManager.getConnection(url); try { Statement statement = connection.createStatement(); ResultSet resultSet = statement.executeQuery("SELECT * FROM table"); while (resultSet.next()) { String columnValue = resultSet.getString("column_name"); } resultSet.close(); statement.close(); } catch (SQLException e) { e.printStackTrace(); } try { Statement statement = connection.createStatement(); String insertQuery = "INSERT INTO table (column1, column2) VALUES ('value1', 'value2')"; int rowsAffected = statement.executeUpdate(insertQuery); statement.close(); } catch (SQLException e) { e.printStackTrace(); } try { Statement statement = connection.createStatement(); String updateQuery = "UPDATE table SET column1 = 'newValue' WHERE column2 = 'value2'"; int rowsAffected = statement.executeUpdate(updateQuery); statement.close(); } catch (SQLException e) { e.printStackTrace(); } try { Statement statement = connection.createStatement(); String deleteQuery = "DELETE FROM table WHERE column1 = 'value1'"; int rowsAffected = statement.executeUpdate(deleteQuery); statement.close(); } catch (SQLException e) { e.printStackTrace(); }


上一篇:
下一篇:
切换中文