當結果小於限制時mysql查詢

Question

這工作正常，但返回的結果少於8個時出現問題。 有沒有其他方法可以重複查詢剩餘的結果？ 任何幫助，將不勝感激，謝謝。

 $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，這將與ORDER BY rand()但像這樣的工作可能有助於

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