_______________________批量修改MySQL表前缀名称

ALTER TABLE ssc__played RENAME TO ssc_played;
ALTER TABLE ssc__played_group RENAME TO ssc_played_group;
ALTER TABLE ssc__score_goods RENAME TO ssc_score_goods;
ALTER TABLE ssc__score_swap RENAME TO ssc_score_swap;
ALTER TABLE ssc__sysadmim_session RENAME TO ssc_sysadmim_session;
ALTER TABLE ssc__sysadmin_bank RENAME TO ssc_sysadmin_bank;
ALTER TABLE ssc__sysadmin_session RENAME TO ssc_sysadmin_session;
ALTER TABLE ssc__sysmember RENAME TO ssc_sysmember;
ALTER TABLE ssc__type RENAME TO ssc_type;select table_name FROM information_schema.tables;
select table_name FROM information_schema.tables where table_name like 'xy_%';
Select CONCAT( 'ALTER TABLE ', table_name, ' RENAME TO ssc', substring(table_name,5 ),';' )FROM information_schema.tables Where table_name LIKE 'ssc_%';

@$con=mysql_connect("localhost","root","");mysql_select_db("abc",$con);mysql_query("set names utf8");//$sql="update user set agent_id=4 where id = 11";//$sql="insert into user (agent_id) VALUES ('4')";$sql="delete from user where id = 10537";$sql2="select agent_id from user where id = 11 limit 1";$rs=query($sql);$rs2=query($sql2);

SELECT DATE_FORMAT( deteline, "%Y-%m-%d %H" ) , COUNT( * ) FROM test

GROUP BY DATE_FORMAT( deteline, "%Y-%m-%d %H" )

查询某天：

deteline, "%Y-%m-%d

某时：

deteline, "%Y-%m-%d %H"

依次类推。

其实就是对dateline进行处理，然后再对处理后的数据分组

function query($sql){    if(strstr($sql,"select")){        $rs=mysql_query($sql);        $res=array();        while($row=mysql_fetch_assoc($rs)){            array_push($res,$row);        }        return $res;    }elseif(strstr($sql,"update")){        $rs=mysql_query($sql);        return $rs;    }elseif(strstr($sql,"insert")){        mysql_query($sql);        $rs=mysql_insert_id();        return $rs;    }elseif(strstr($sql,"delete")){        $rs=mysql_query($sql);        return $rs;    }

}echo "<pre>";var_dump($rs);var_dump($rs2);exit;

static public function Insert( $table, $condition ){   self::Instance();

   $sql = "INSERT INTO `$table` SET ";   $content = null;

   foreach ( $condition as $k => $v )   {      $v_str = null;      if ( is_numeric($v) )         $v_str = $v;      else if ( is_null($v) )         $v_str = 'NULL';      else         $v_str = "'" . self::EscapeString($v) . "'";

      $content .= "`$k`=$v_str,";   }

   $content = trim($content, ',');   $sql .= $content;

   $result = self::Query ($sql);   if ( false==$result )   {      self::Close();      return false;   }

   return self::GetInsertId();}