1亿条数据如何分表100张到Mysql数据库中（PHP）

 $i=0;
 while($i<=99){
 echo "$newNumber \r\n";
 $sql="CREATE TABLE `code_".$i."` (
 `full_code` char(10) NOT NULL,
 `create_time` int(10) unsigned NOT NULL,
 PRIMARY KEY (`full_code`),
 ) ENGINE=MyISAM DEFAULT CHARSET=utf8";
 mysql_query($sql);
 $i++; 

$table_name=get_hash_table('code',$full_code);
function get_hash_table($table,$code,$s=100){
$hash = sprintf("%u", crc32($code));
echo $hash;
$hash1 = intval(fmod($hash, $s));
 return $table."_".$hash1;
} 

CREATE TABLE IF NOT EXISTS `code` ( 
`full_code` char(10) NOT NULL,
`create_time` int(10) unsigned NOT NULL,
INDEX(full_code) 
) TYPE=MERGE UNION=(code_0,code_1,code_2.......) INSERT_METHOD=LAST ;