กิจกรรมที่จะจัดขึ้น

SELECT * FROM ( SELECT * FROM M_UP_EVENT LEFT JOIN WF_FILE ON M_UP_EVENT.EVENT_ID = WF_FILE.WFR_ID AND WFS_FIELD_NAME = 'EVENT_IMG' AND FILE_STATUS = 'Y' AND WF_FILE.WF_MAIN_ID = '51117' WHERE 1=1 AND EVENT_ID != 343 ORDER BY M_UP_EVENT.EVENT_ID DESC ) WHERE ROWNUM <= 4 Error Description: ERROR: column "rownum" does not exist LINE 18: ROWNUM <= 4 ^