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query to get all rows in join from 2 tables
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Krishnadeva Reddy

New User


Joined: 14 Nov 2007
Posts: 37
Location: Chennai
PostPosted: Tue Nov 15, 2011 8:47 am
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Hi,

I'm trying to get all rows from two tables by joining.
When there is no corresponding row found in TABLEB, I'm trying to get blanks in the output but my query is not giving desired results

Please advise.

TABLEA - sample data and this table has more rows than this

Code:

---------+---------+---------+---------+---------+---------+-----
B_OFF#   ID_USER  SVC_FRM_DT  SVC_THRU_DT  P_ID   
---------+---------+---------+---------+---------+---------+------
300000610  761001  2011-06-01     2011-06-01             0
300000620  761002  2011-06-01     2011-06-01     351001   
310544110  760996  2010-10-19     2010-10-19     352001   
310544220  760997  2010-10-19     2010-10-19     451003   
310544330  760998  2010-10-19     2010-10-19             0



TABLEB - sample data and this table has more rows than this

Code:

---------+---------+---------+---------
   P_ID   CHK_AMT  ISS_DTE     CHK_#
---------+---------+---------+---------
  351001    50.00  2011-06-01  A123-24
  352001    75.00  2011-06-02  A123-56
  451003    80.00  2010-10-19  A123-97


The output I'm getting from the below query

Code:

SELECT A.B_OFF#
           ,A.ID_USER
           ,B.CHK_#
           ,B.CHK_AMT
  FROM TABLEA.A, TABLEB.B
WHERE A.P_ID = B.P_ID
    AND ID_USER IN (761001,
                               761002,
                               760996,
                               760997,
                               760998)
     ;

---------+---------+---------+---------+-------
     B_OFF#      ID_USER  CHK_#      CHK_AMT
---------+---------+---------+---------+-------
  300000620       761002  A123-24    50.00
  310544110       760996  A123-56    75.00
  310544220       760997  A123-97    80.00


Can you please tell me to get all rows from 2 tables even if there is no match found in TABLEB?

The output i'm looking is

Code:

---------+---------+---------+---------+-------
     B_OFF#      ID_USER  CHK_#      CHK_AMT
---------+---------+---------+---------+-------
  300000610       761001 
  300000620       761002  A123-24    50.00
  310544110       760996  A123-56    75.00
  310544220       760997  A123-97    80.00
  310544330       760998 
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chandan.inst

Active User


Joined: 03 Nov 2005
Posts: 275
Location: Mumbai
PostPosted: Tue Nov 15, 2011 10:22 am
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Hi Krishna,
I belive you want to write all rows from Table A and when you find a match in Table B write amounts from table B in report else populate spaces for.

Here you need to use left outer join as below

Code:
SELECT A.B_OFF#
           ,A.ID_USER
           ,B.CHK_#
          , B.CHK_AMT
      FROM TABLEA.A
          LEFT OUTER JOINT
            TABLEB.B 
      ON A.P_ID = B.P_ID
      AND ID_USER IN (761001,
                               761002,
                               760996,
                               760997,
                               760998)
     ;


When B.CHK_# and B.CHK_AMT are null you need to populate Spaces to your corresponding report variables

Regards,
Chandan
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