编写一个程序，判断school数据库中是否存在student表

这个问题的答案取决于使用的数据库管理系统和编程语言。以下是一些示例代码：

### MySQL + Python

import mysql.connector

mydb = mysql.connector.connect(
  host="localhost",
  user="yourusername",
  password="yourpassword",
  database="school"
)

mycursor = mydb.cursor()

mycursor.execute("SHOW TABLES")

tables = mycursor.fetchall()

for table in tables:
  if table[0] == "student":
    print("The student table exists in the school database.")
    break
else:
  print("The student table does not exist in the school database.")

### PostgreSQL + Python

import psycopg2

conn = psycopg2.connect(
    host="localhost",
    database="school",
    user="yourusername",
    password="yourpassword"
)

cur = conn.cursor()

cur.execute("SELECT EXISTS(SELECT relname FROM pg_class WHERE relname='student')")

exists = cur.fetchone()[0]

if exists:
  print("The student table exists in the school database.")
else:
  print("The student table does not exist in the school database.")

### SQL Server + C#

using System;
using System.Data.SqlClient;

class Program 
{
    static void Main(string[] args) 
    {
        string connectionString = "Server=localhost;Database=school;User Id=yourusername;Password=yourpassword";
        SqlConnection connection = new SqlConnection(connectionString);
        connection.Open();

        string query = "SELECT * FROM information_schema.tables WHERE table_name = 'student'";
        SqlCommand command = new SqlCommand(query, connection);
        SqlDataReader reader = command.ExecuteReader();

        if (reader.HasRows) 
        {
            Console.WriteLine("The student table exists in the school database.");
        } 
        else 
        {
            Console.WriteLine("The student table does not exist in the school database.");
        }

        reader.Close();
        connection.Close();
    }
}

无论使用哪种方法，都需要提供正确的数据库连接信息和凭据，以及检查表名是否正确。