Hi ,
Try the below Query.
SELECT
"defect"."BG_BUG_ID" AS "id",
"defect"."BG_RESPONSIBLE" AS "owner",
"defect"."BG_STATUS" AS "status",
"defect"."BG_DETECTED_BY" AS "detected_by",
"linked_defect"."BG_BUG_ID" AS "linked_defect_id",
"linked_defect"."BG_RESPONSIBLE" AS "linked_defect_owner",
"linked_defect"."BG_DETECTED_BY" AS "linked_defect_detected_by",
"linked_defect"."BG_STATUS" AS "linked_defect_status"
FROM
BUG "defect"
INNER JOIN LINK "defect_link" ON
"defect"."BG_BUG_ID" = "defect_link"."LN_BUG_ID"
AND
"defect_link"."LN_ENTITY_TYPE" = 'BUG'
INNER JOIN BUG "linked_defect" ON "linked_defect"."BG_BUG_ID" = "defect_link"."LN_ENTITY_ID"
or
SELECT
* from
LINK
INNER JOIN BUG ON ((LN_BUG_ID=BG_BUG_ID) OR LN_ENTITY_ID=BG_BUG_ID) AND LN_ENTITY_TYPE='BUG'