The Left join using where conditions behaves as a inner join.It filters out the rows at he end instead of keeping the source row ans adding null columns for non matching condition.

WF8105M
windows 10

This message has been edited. Last edited by: FP Mod Chuck,

What is the DBMS? If it's an SQL database, run your request with SQL Trace on so you can see what kind of SELECT it's generating.

The following works for me:

  
SET HOLDLIST = PRINTONLY
SET ASNAMES = SUBST
SET PAGE-NUM = OFF

TABLE FILE car
SUM SALES AS 'SALES1'
BY CAR
WHERE CAR NE 'ALFA ROMEO'
ON TABLE HOLD AS HOLD1
END
-RUN

TABLE FILE car
SUM SALES AS 'SALES2'
BY CAR
WHERE CAR NE 'BMW'
ON TABLE HOLD AS HOLD2
END
-RUN

JOIN LEFT_OUTER FILE HOLD1 AT HOLD1.HOLD1.CAR
TO UNIQUE FILE HOLD2 AT HOLD2.HOLD2.CAR TAG J001 AS J001
WHERE HOLD1.HOLD1.CAR EQ J001.HOLD2.CAR;
WHERE J001.HOLD2.CAR NE 'AUDI';
END

TABLE FILE HOLD1
SUM 
HOLD1.HOLD1.SALES1 
J001.HOLD2.SALES2
BY HOLD1.HOLD1.CAR
END

Finaloutput:

CAR	  SALES   SALES2
AUDI      7800    0
BMW       80390   0
DATSUN    43000   43000
JAGUAR    12000   12000
JENSEN    0	  0
MASERATI  0	  0
PEUGEOT   0	  0
TOYOTA    35030   35030
TRIUMPH   0       0  

• HOLD1 is the main table and has ALFA ROMEO filtered out and it doesn't appear anywhere in the final output
  
• HOLD2 is the joined table and has BMW filtered out and the SALES2 field in the final report is 0 in the final output
  
• In the join, HOLD2 has AUDI filtered out in the WHERE clause of the join and SALES2 for AUDI is 0 in the final output
  

This message has been edited. Last edited by: Hallway,

Hi Siva,
Yep, you are not the only having similar results using LEFT OUTER join.
You need to have following line at top of your FEX code for LEFT to work:
SET ALL = PASS

quote:

It filters out the rows at the end instead of keeping the source row and adding null columns for non matching condition.

Sounds like you are using one of the relational engines?

If that is the case, if you want WebFOCUS to assign null values to the fields in a missing segment instance when a
left outer join is in effect, you can issue the command SET SHORTPATH=SQL.