Requirement for the query

Hi all

I'm using Oracle 11.2.0.3

CREATE TABLE PRODUCT (ID NUMBER, PRODUCT_CODE VARCHAR2 (30));

INSERT INTO THE PRODUCT VALUES (1, 'CAR1');

INSERT INTO THE PRODUCT VALUES (2, 'CAR2');

INSERT INTO THE PRODUCT VALUES (3, 'CAR3');

INSERT INTO THE PRODUCT VALUES (4, 'CAR4');

INSERT INTO THE PRODUCT VALUES (5, 'CAR5');

CREATE TABLE ITEM_STG (ITEM_CODE VARCHAR2 (30), ITEM_DESC VARCHAR2 (200));

INSERT INTO ITEM_STG VALUES ('CAR1', 'MARUTI');

INSERT INTO ITEM_STG VALUES ('CAR2', 'AUNTIE');

CREATE TABLE AN ELEMENT (ITEM_CODE VARCHAR2 (30), ITEM_DESC VARCHAR2 (200));

INSERT INTO ARTICLE VALUES ('CAR1', 'BMV');

INSERT INTO ARTICLE VALUES ('CAR2', 'BENZ');

INSERT INTO ARTICLE VALUES ('CAR2', 'LANDROVER');

INSERT INTO ARTICLE VALUES ('CAR2', 'JAGUAR');

My requirement is like I make a query

so that it checks the product code with the item code

and first he will get the values of the table ITEM_STG if the value of patcular is not found in the table ITEM_STG then it goes to the table ARTICLE

can it be possibel in simple sql query

SELECT A.PRODUCT_CODE, NVL (B.ITEM_DESC, C.ITEM_DESC)

THE PRODUCT,.

B ITEM_STG,

POINT C

WHERE A.PRODUCT_CODE = B.ITEM_CODE

AND A.PRODUCT_CODE = C.ITEM_CODE

I tried like the query above and with left join and other possibilities, but getting not the query.

Please help me

Thank you

You were close...

SQL> ed
Wrote file afiedt.buf                                              

  1  select a.product_code, nvl(b.item_desc, c.item_desc) item_desc
  2  from product a, item_stg b, item c
  3  where a.product_code = b.item_code ( + )
  4* and a.product_code = c.item_code
SQL> /                                                            

PRODUCT_CODE
------------------------------
ITEM_DESC
---------------------------------------------------------------------
CAR1
MARUTI                                                            

CAR2
TATA                                                              

CAR4
JAGUAR                                                            

PRODUCT_CODE
------------------------------
ITEM_DESC
---------------------------------------------------------------------
CAR3
LANDROVER

Note: remove space (+)

Grrr... stupid software

Tags: Database

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