Guide me to write a query

Question

Hi All,
I want to retrieve some 7 fields from 3 tables
5 from prd_common_info
1 from vendor
1 from srv_act
common column :
prd_common_info and srv_act - prd_code
srv_act and vendor - vendor_id
vendor and prd_common_info - LAST_MOD_USER
condition should be PRD_CODE = 'M-DATA' and INV_STATUS_FLAG='A'
I have written a query beloe.but the problem here all the data is getting duplicated(too many records for one entry).
SELECT P.PRD_CODE,P.CIRCUIT_ID,P.NAME,P.EMP_ID,P.END_USER_EMAIL,V.VENDOR_NAME,P.COMMENTS
FROM
PRD_COMMON_INFO P,SRV_ACT S,VENDOR V
WHERE P.PRD_CODE = 'M-DATA' and INV_STATUS_FLAG='A'
AND P.PRD_CODE=S.PRD_CODE and S.VENDOR_ID=V.VENDOR_ID AND V.LAST_MOD_USER=P.LAST_MOD_USER
Please help me to write the query.
Regards,
Saji

Answer 1

Hi,
If the problem in duplicate records only, use DISTINCT
SELECT DISTINCT P.PRD_CODE,
                P.CIRCUIT_ID,
                P.NAME,
                P.EMP_ID,
                P.END_USER_EMAIL,
                V.VENDOR_NAME,
                P.COMMENTS
  FROM PRD_COMMON_INFO P, SRV_ACT S, VENDOR V
WHERE     P.PRD_CODE = 'M-DATA'
       AND INV_STATUS_FLAG = 'A'
       AND P.PRD_CODE = S.PRD_CODE
       AND S.VENDOR_ID = V.VENDOR_ID
       AND V.LAST_MOD_USER = P.LAST_MOD_USERSaad,