Question

我有3个表（event_csv，TimeSlots和FilledSlots）。我必须检查'配额'是否代表总共没有座位和$ filledpositions（没有填充席位）然后我想按照第一次显示的未填充行的顺序排序'event_csv'表中的行

   SELECT csv_id,description,Location_description,Jobdate FROM event_csv WHERE Jobdate = '$event';

   SELECT ID, Quota, StartTime, EndTime FROM TimeSlots WHERE EventID='. $row[csv_id] . ';

   $filledquery = 'SELECT ID FROM FilledSlots WHERE TimeSlotID=' . $filled[ID];
   $filledresult = mysql_query($filledquery) or die(mysql_error());
   $filledPositions =  mysql_num_rows($filledresult);

event_csv表包含以下字段

    1   csv_id  int(11)             
2   TaskId  int(12)             
3   description     varchar(32)         
4   super   char(32)    
5   LocId   int(8)              
6   Location_description    varchar(32)         
7   Jobdate     date            
8   Jobtime     time                
9   Duration    time            
10  PersonsReq  int(2)          
11  tshirt  varchar(3)      
12  counted     int(1)

TimeSlots表包含以下字段

    1   ID  int(11)             
2   Date    date            
3   Quota   int(11)             
4   EventID     int(11)         
5   SlotName    varchar(64)     
6   StartTime   time            
7   EndTime     time            
8   beer_hours  int(2)

FilledSlots表有以下字段

1   ID  int(11)             
2   TimeSlotID  int(11)                     
3   EventID     int(11)             
4   VolName     varchar(80)     
5   VolEmail    varchar(150)        
6   VolPhone    varchar(15)     
7   Shirt_Size  varchar(32)     
8   Approved    tinyint(1)      
9   Time_slot   time            
10  beer_hours  int(2)

使用orderby从3个表中获取数据

0 个答案: