我想知道a.*,c.name,...a.access等意味着。换句话说,当我在点的前面加上一个字母和点的函数时,我到底指的是什么。$query = "SELECT a.*, c.name as categoryname,c.id as categoryid, ". " FROM #__k2_items as a".
" LEFT JOIN #_
有没有人能为我指出这个问题的正确方向?无论我用哪种方法尝试,我都会继续得到错误 , b.CUSTOMER , Round(sum(d.TOTAL_WEIGHT)/1000,2) AS MONTHLY_DESPATCHif(sum(d.TOTAL_WEIGHT)/1000>0 AND b.JANUARY_BUDGET=0,&