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½ñÌìÔĶÁ wordpress´úÂëʱ£¬·¢ÏÖÒ»¸öMYSQLµÄ¹Ø¼ü´Ê SQL_CALC_FOUND_ROWS ²é¿´ÊÖ²áºó·¢Ïִ˹ؼü´ÊµÄ×÷ÓÃÊÇÔÚ²éѯʱͳ¼ÆÂú×ã¹ýÂËÌõ¼þºóµÄ½á¹ûµÄ×ÜÊý£¨²»ÊÜ Limit µÄÏÞÖÆ£©
ÀýÈ磺 SELECT SQL_CALC_FOUND_ROWS tid from cdb_threads WHERE fid=14 LIMIT 1,10;
¼ÙÉèÂú×ãÌõ¼þµÄÓÐ1000Ìõ£¬ÕâÀï·µ»Ø10Ìõ¡£Á¢¼´Ê¹Óà SELECT found_rows() AS rowcount; Ôò·µ»ØµÄ rowcount Ϊ1000£»
ÕâÑù½ÚÊ¡ÁËSELECT count(*) AS rowcountµÄÖØ¸´²éѯ£¬¿ÉÒÔ½ÚÊ¡±È½Ï¿É¹ÛµÄʱ¼ä
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function mail_list_sent($uid, $start)
{
// ×¢ÒâSQL_CALC_FOUND_ROWS uidÖ®¼äûÓжººÅ
$query = "SELECT SQL_CALC_FOUND_ROWS uid, real_name, current_city, msg_uid, sender_flag, msg_title, msg_content from ".TT_DBTABLEPRE."mailbox as mb1, ".TT_DBTABLEPRE."user as usr1 WHERE mb1.sender_id=usr1.uid AND mb1.sender_id=$uid AND sender_flag > 0 LIMIT $start, ".TT_PAGESIZE;
$mails = $this->db->fetch_all($query);
//²éѯSELECTÖÐÂú×ãÌõ¼þµÄÐÐÊý£¬ÓëLIMIT×Ó¾äÎÞ¹Ø
$max_count = $this->db->fetch_first("SELECT found_rows() AS rowcount");

$tmp['state_code'] = 200;
$tmp['info'] = "OK";
$tmp['list'] = $mails;
$data = json_encode($tmp);
return $data;
}
 
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