当结果小于限制时mysql查询

Question

这工作正常，但返回的结果少于8个时出现问题。 有没有其他方法可以重复查询剩余的结果？ 任何帮助，将不胜感激，谢谢。

 $vacation = mysql_query("SELECT i.* 
     FROM vacation_offer_tbl i 
     INNER JOIN vacation_offer_pics_tbl c ON (c.vacat_offer_id = i.vacat_offer_id) 
     WHERE i.conditional ='1' 
     AND c.pic_1 != '' 
     // if < 8 results rerurn the rest where c.pic_1 ='nothing' 
     ORDER BY rand() 
     LIMIT 8") or die(mysql_error()); 

Answer 1

林不知道有多好，这将与ORDER BY rand()但像这样的工作可能有助于

SELECT i.*, if(c.pic_1 != '',0,1) as sortOn 
FROM vacation_offer_tbl i 
INNER JOIN vacation_offer_pics_tbl c ON (c.vacat_offer_id = i.vacat_offer_id) 
WHERE i.conditional ='1' 
ORDER BY sortOn, rand() 
LIMIT 8