MySQL 使用SQL语句修改表名的实现

RENAME TABLE <旧表名> TO <新表名>;

mysql> show tables;
+-------------------+
| Tables_in_cainiao |
+-------------------+
| test       |
| test2       |
+-------------------+
2 rows in set (0.00 sec)

mysql> rename table test to test1;
Query OK, 0 rows affected (0.08 sec)

mysql> show tables;
+-------------------+
| Tables_in_cainiao |
+-------------------+
| test1       |
| test2       |
+-------------------+
2 rows in set (0.00 sec)

ALTER TABLE 原表名 RENAME TO 新表名;

show tables;

SELECT
  CONCAT(
    'ALTER TABLE ',
    table_name,
    ' RENAME TO db_',
    substring(table_name, 4),
    ';'
  )
FROM
  information_schema. TABLES
WHERE
  table_name LIKE 'ct%';

<?php
//设置好相关信息
$dbserver='localhost';//连接的服务器一般为localhost
$dbname='corethink';//数据库名
$dbuser='root';//数据库用户名
$dbpassword='root';//数据库密码
$old_prefix='ct_';//数据库的前缀
$new_prefix='new_';//数据库的前缀修改为
if ( !is_string($dbname) || !is_string($old_prefix)|| !is_string($new_prefix) ){
  return false;
}
  
if (!mysql_connect($dbserver, $dbuser, $dbpassword)) {
   print 'Could not connect to mysql';
  exit;
}
//取得数据库内所有的表名
$result = mysql_list_tables($dbname);
if (!$result){
  print "DB Error, could not list tablesn";
  print 'MySQL Error: ' . mysql_error();
  exit;
}
//把表名存进$data
 while ($row = mysql_fetch_row($result)) {
  $data[] = $row[0];
}
//过滤要修改前缀的表名
foreach($data as $k => $v){
  $preg = preg_match("/^($old_prefix{1})([a-zA-Z0-9_-]+)/i", $v, $v1);
  if($preg){
    $tab_name[$k] = $v1[2];
  }
}
if($preg){        
   foreach($tab_name as $k => $v){
    $sql = 'RENAME TABLE `'.$old_prefix.$v.'` TO `'.$new_prefix.$v.'`';
    mysql_query($sql);
  }
  print 数据表前缀：.$old_prefix."<br>".已经修改为：.$new_prefix."<br>";  
}else{ print 您的数据库表的前缀.$old_prefix.输入错误。请检查相关的数据库表的前缀; 
  if ( mysql_free_result($result) ){
    return true;
  }
}
?>

SELECT
  CONCAT(
    'drop table ',
    table_name,
    ';'
  )
FROM
  information_schema. TABLES
WHERE
  table_name LIKE 'uc_%';