จอยหลายตาราง การจอยหลายตารางจำเป็นไหมค่ะว่าข้อมูลที่เอาออกมานั้นแสดงนั้นจะต้องมีข้อมูลทุกคอลัมหมด เพร

 select em_creatmeet.MEETTIMEID,em_creatmeet.COMMITID,em_creatmeet.TIMEID,em_creatmeet.PLACE,em_creatmeet.CMDATE,
em_creatmeet.STIME1,em_creatmeet.FTIME1,em_creatmeet.STIME2,em_creatmeet.FTIME2,
cm_create_commit.COMMITID,cm_create_commit.SUBJECT,
em_creatdata.MEETTIMEID,em_creatdata.MAINDATA,em_creatdata.SECONDDATA,em_creatdata.THIRDDATA,
em_fixlistname.MEETTIMEID,em_fixlistname.F1,em_fixlistname.F2,em_fixlistname.F3,em_fixlistname.F4,em_fixlistname.F5,
em_listname.ATTENDNAMEID,em_listname.LISTNAMEID,em_listname.MEETTIMEID,
em_meeting.SCHECKID,em_meeting.MEETINGID,em_meeting.MDETAIL,em_meeting.EMPLOYEEID,em_meeting.DATELINE,em_meeting.DATEASSIGN,em_meeting.CREATEDATAID,em_meeting.CHKOTHER,
em_chkmeet.SCHECKID,em_chkmeet.CHKMEET,
'(  ' ||VW_HRIS_EMPLOYEE.TITLEHUTH || ' ' || VW_HRIS_EMPLOYEE.FIRSTNAMETH || ' ' || VW_HRIS_EMPLOYEE.LASTNAMETH ||'  )',cm_positiong.POSITIONGNAME,
cm_positiong.POSITIONGID
from  em_creatmeet 
inner join em_creatdata on em_creatdata.MEETTIMEID = em_creatmeet.MEETTIMEID
inner join em_meeting on em_meeting.CREATEDATAID = em_creatdata.CREATEDATAID
inner join em_chkmeet on em_meeting.SCHECKID = em_chkmeet.SCHECKID
inner join em_fixlistname on em_creatdata.MEETTIMEID = em_fixlistname.MEETTIMEID
inner join em_listname on em_listname.ATTENDNAMEID = em_fixlistname.ATTENDNAMEID
inner join cm_create_commit on em_creatmeet.COMMITID = cm_create_commit.COMMITID	  
inner join  cm_nameingroup on em_creatmeet.COMMITID = cm_nameingroup.COMMITID
inner join  VW_HRIS_EMPLOYEE  on cm_nameingroup.EMPLOYEEID = VW_HRIS_EMPLOYEE.EMPLOYEEID
inner join  cm_positiong on cm_positiong.POSITIONGID = cm_nameingroup.POSITIONGID
where em_creatmeet.timeid = '3/2553'