How to use outer join to display the results

Question

I want to develop a report in which the column sequence will be as follows:
1)Item_code
2)Item_name
3)Stock
4)Pending
5)Re-order Level
6)Item_reorder_qty
I had written the query, but the problem is all the products does not get displayed. The products are more than 700. But after running the query, only 364 gets displayed.
How i can make use of outer join in the following statements :
AND ITEM_CODE = LCS_ITEM_CODE
AND ITEM_CODE = PI_ITEM_CODE
AND LCS_ITEM_CODE = PI_ITEM_CODE
in the below given query to solve this.
SELECT
ITEM_CODE,
ITEM_NAME,
((LCS_STK_QTY_BU + LCS_RCVD_QTY_BU - LCS_ISSD_QTY_BU- LCS_REJECT_QTY_BU)/IU_MAX_LOOSE_1)STK ,
SUM(TO_NUMBER(PI_QTY||'.'||PI_QTY_LS) - (PI_GI_QTY_BU/IU_CONV_FACTOR/IU_MAX_LOOSE_1))PNDG,
ITEM_RORD_LVL,
ITEM_RORD_QTY
FROM
OM_ITEM,
OM_ITEM_UOM,
OT_PO_HEAD,
OT_PO_ITEM,
OS_LOCN_CURR_STK
WHERE (ITEM_UOM_CODE = IU_UOM_CODE AND ITEM_CODE = IU_ITEM_CODE)
AND ITEM_CODE = LCS_ITEM_CODE
AND ITEM_CODE = PI_ITEM_CODE
AND LCS_ITEM_CODE = PI_ITEM_CODE
AND LCS_LOCN_CODE ='RM'
AND PI_PH_SYS_ID = PH_SYS_ID
GROUP BY ITEM_CODE,ITEM_NAME,LCS_STK_QTY_BU,LCS_RCVD_QTY_BU,LCS_ISSD_QTY_BU,LCS_REJECT_QTY_BU,IU_MAX_LOOSE_1,ITEM_RORD_LVL,ITEM_RORD_QTY
ORDER BY ITEM_CODE ASC
Yogesh

Answer 1

As you have no table aliases I can't tell what columns relate to which tables on your join conditions.
Can you not just put (+) next to the outer joined columns you require on the where clause? Or perhaps consider using ANSI syntax for the joins such as <tableA> LEFT OUTER JOIN <tableB> ON (<join conditions>)