查询数据表的最后一行，通常取决于你使用的数据库管理系统（如MySQL、PostgreSQL、SQLite等）以及你使用的编程语言或数据库工具。以下是一些常见数据库和编程语言的示例：
MySQL
```sql
SELECT FROM your_table ORDER BY id DESC LIMIT 1;
```
这里假设`id`是一个可以按顺序递增的列。
PostgreSQL
```sql
SELECT FROM your_table ORDER BY id DESC LIMIT 1;
```
与MySQL类似。
SQLite
```sql
SELECT FROM your_table ORDER BY id DESC LIMIT 1;
```
同样适用于SQLite。
Python (使用pymysql库)
```python
import pymysql
连接数据库
connection = pymysql.connect(host='localhost',
user='user',
password='password',
database='database',
charset='utf8mb4',
cursorclass=pymysql.cursors.DictCursor)
try:
with connection.cursor() as cursor:
sql = "SELECT FROM your_table ORDER BY id DESC LIMIT 1"
cursor.execute(sql)
result = cursor.fetchone()
print(result)
finally:
connection.close()
```
Java (使用JDBC)
```java
import java.sql.;
public class Main {
public static void main(String[] args) {
String url = "jdbc:mysql://localhost:3306/database";
String user = "user";
String password = "password";
try (Connection conn = DriverManager.getConnection(url, user, password);
Statement stmt = conn.createStatement();
ResultSet rs = stmt.executeQuery("SELECT FROM your_table ORDER BY id DESC LIMIT 1")) {
if (rs.next()) {
System.out.println(rs.getString("column_name"));
