Don'T repeat item with a LEFT JOIN QUERY

Hello,
I would like to know how display the following results:
*Name*: John Fox
*Sales:* 1- LAPTOP
                2- HARDDRIVE
                3- COMPUTERHere is my 2 tables: CUSTOMER and SALES
CUSTOMER
ID NAME GENDER
1 John Mayer F
2 Melissa John F
3 Julie Black F
4 Mickael Fox M
5 John Fox M
SALES
ID ID_CUSTOMER TYPE
1 1 Boat
2 1 TV
3 4 CD PLAYER
4 5 LAPTOP
5 5 HARDDRIVE
6 5 COMPUTER
My QUERY
SELECT customer.Name as NAME, customer.Gender, sales.TYPE
from customer
LEFT JOIN sales
ON customer.ID = sales.ID_CUSTOMER
WHERE customer.Name = 'John Fox'The problem: If I use the default template, I have:
NAME GENDER TYPE
John Fox M LAPTOP
John Fox M HARDDRIVE
John Fox M COMPUTER I don'T want the Name John Fox to be repeated at each row.
I tried to add: #Name# in the REGION DEFINITION - REGION HEADER but I have this result:
#NAME#
NAME GENDER TYPE
John Fox M LAPTOP
John Fox M HARDDRIVE
John Fox M COMPUTER
So, what can I do to have this result? Change the query???
Name: John Fox
Sales: 1- LAPTOP
       2- HARDDRIVE
        3- COMPUTER               thanks,
     Roseline

Hi Roseline,
You can adapt the solution suggested in this post Re: More than 1 records in one cell
Thanks,
Manish

Similar Messages

Multi-Left Join Query Tuning

I am tuning a SELECT query with 36 Left Joins in addition to normal Inner Joins and a View.
I have used the RESULT_CACHE hint with some success.
I have tried the LEADING hint and USE_MERGE with no success.
Is there an Undocumented HINT and that may assist me?
Thanks
BRAD

Hi, Brad,
Welcome to the forum!
970109 wrote:
I am tuning a SELECT query with 36 Left Joins in addition to normal Inner Joins and a View.Why does the query need so many outer joins? Could there be a bad table design behind this problem? Post a simplified version ot the problem (with maybe 3 tables that need to be outer-joined). Post CREATE TABLE and INSERT statements for a little sample data (relevant columns only), the results you want from that sample data, and an explanation of how you get those results from that data.
See the forum FAQ {message:id=9360002}
For all tuning problems, see {message:id=9360003}

Inconsistent results with ANSI LEFT JOIN on 9iR2

Is this a known issue? Is it solved in 10g?
With the following data setup, I get inconsistent results. It seems to be linked to the combination of using LEFT JOIN with the NULL comparison within the JOIN.
create table titles (title_id int, title varchar(50));
insert into titles values (1, 'Red Book');
insert into titles values (2, 'Yellow Book');
insert into titles values (3, 'Blue Book');
insert into titles values (4, 'Orange Book');
create table sales (stor_id int, title_id int, qty int, email varchar(60));
insert into sales values (1, 1, 1, '[email protected]'));
insert into sales values (1, 2, 1, '[email protected]');
insert into sales values (3, 3, 4, null);
insert into sales values (3, 4, 5, '[email protected]');
SQL> SELECT titles.title_id, title, qty
2 FROM titles LEFT OUTER JOIN sales
3 ON titles.title_id = sales.title_id
4 AND stor_id = 3
5 AND sales.email is not null
6 ;
TITLE_ID TITLE QTY
4 Orange Book 5
3 Blue Book
1 Red Book
2 Yellow Book
SQL>
SQL> SELECT titles.title_id, title, qty
2 FROM titles LEFT OUTER JOIN sales
3 ON titles.title_id = sales.title_id
4 AND 3 = stor_id
5 AND sales.email is not null;
TITLE_ID TITLE QTY
2 Yellow Book 1
4 Orange Book 5
3 Blue Book
1 Red Book
It seems to matter what order I specify the operands stor_id = 3, or 3 = stor_id.
In the older (+) environment, I would understand this, but here? I'm pretty sure most other databases don't care about the order.
thanks for your insight
Kevin

Don't have a 9i around right now to test ... but in 10 ...
SQL> create table titles (title_id int, title varchar(50));
Â
Table created.
Â
SQL> insert into titles values (1, 'Red Book');
Â
1 row created.
Â
SQL> insert into titles values (2, 'Yellow Book');
Â
1 row created.
Â
SQL> insert into titles values (3, 'Blue Book');
Â
1 row created.
Â
SQL> insert into titles values (4, 'Orange Book');
Â
1 row created.
Â
SQL> create table sales (stor_id int, title_id int, qty int, email varchar(60));
Â
Table created.
Â
SQL> insert into sales values (1, 1, 1, '[email protected]');
Â
1 row created.
Â
SQL> insert into sales values (1, 2, 1, '[email protected]');
Â
1 row created.
Â
SQL> insert into sales values (3, 3, 4, null);
Â
1 row created.
Â
SQL> insert into sales values (3, 4, 5, '[email protected]');
Â
1 row created.
Â
SQL> SELECT titles.title_id, title, qty
2   FROM titles LEFT OUTER JOIN sales
3   ON titles.title_id = sales.title_id
4   AND stor_id = 3
5   AND sales.email is not null
6   ;
Â
TITLE_ID TITLE                                                     QTY
         4 Orange Book                                                 5
         3 Blue Book
         1 Red Book
         2 Yellow Book
Â
SQL>
SQL> SELECT titles.title_id, title, qty
2   FROM titles LEFT OUTER JOIN sales
3   ON titles.title_id = sales.title_id
4   AND 3 = stor_id
5   AND sales.email is not null;
Â
TITLE_ID TITLE                                                     QTY
         4 Orange Book                                                 5
         3 Blue Book
         1 Red Book
         2 Yellow Book
SQL> exit
Disconnected from Oracle Database 10g Enterprise Edition Release 10.1.0.2.0 - Production
With the Partitioning, OLAP and Data Mining options

Having issues with a left join, getting ORA-00904 error

Ok this is something very similar to what I am facing, but dumbed down. None of these columns or tables names exist in real life (Very paranoid company I work for, understandable though) but the fundamental problem I am having is like below.
Basically I know I could have done something similar to this is MS SQL (Or am I dreaming?). If I am right or wrong I need to know a way around this.
Obviously if you comment out the "CAL.WEEK_SINCE_2005" and "AND CUST.week_since_2005 = CAL.WEEK_SINCE_2005" it would work. But I really need it to display the date as well. So it can be group'ed by week since 2005.
I will be joining other statements to this. I am hoping on doing this in one select statement instead of creating multiple tables as I am now. All the other joined tables will follow a VERY similar layout to this. So something like this is need to obtain the look.
When ran I get the following error.
I look forward to learning what I did wrong and how I can fix it. :)
select ORG.ORGANIZATION_NAME,
CUST.CUST_COUNT,
CAL.WEEK_SINCE_2005
FROM organization ORG,
calendar CAL
LEFT JOIN (
SELECT CAP.CURRENT_STORE,
CALEN.week_since_2005,
count(CAP.inactive_date) CUST_COUNT
FROM CUST_AGREE_PAST CAP,
calendar CALEN
WHERE CAP.active_date is not null
and CAP.inactive_code in ('T')
and CAP.inactive_date between '01-sep-07' and sysdate
and CAP.INACTIVE_DATE = CALEN.CALENDAR_DATE
and CAP.RSN_CODE_ID in (select rsn_code_id from reasons where title in ('FAIL', 'NO CALL'))
GROUP BY CAP.CURRENT_STORE,
CALEN.week_since_2005) CUST
ON PO.CURRENT_STORE = ORG.ORGANIZATION_NAME
AND CUST.week_since_2005 = CAL.WEEK_SINCE_2005

Just noticed a problem (there might be others):
FROM organization ORG,
calendar CAL
LEFT JOIN (You cannot do that - you are mixing Oracle and ANSI join syntax. You have to do one or the other:
FROM organization ORG
JOIN calendar CAL on (ORG.col = CAL.col)
LEFT JOIN (....)

Left join query with join of three tables

I'm trying to build a query which has me stumped. Most of the query is fairly straightforward but I've run into an issue I'm not sure how to solve.
Background:
We have actions stored in i_action.
We have the available attributes for each type of action. The available attributes for each action are described in shared_action_attribute. Each type of action may have up to three attributes or none at all.
We have the values stored for the attributes in i_attribute_value.
A written example:
We have a transfer action (action_code B4). The entry of the B4 action into i_action records the fact that the transfer occurred and the date on which it occurred. The available attributes for a transfer action are the receiving function code, the receiving unit number, and the transfer reason code. These available attribute types and their order are stored in shared_action_attribute. The actual values of the attributes for a specific transfer action are stored in i_attribute_value.
Now i_action and i_attribute_value can be directly linked through action_seq in i_action and ia_action_seq in i_attribute_value. A left join built between these two tables provides results for all actions (including actions which have no attributes) and attribute values (see query 1 below).
There are two issues. First, I only want the first two attributes. In order to specify the first two attributes, I also have to link i_attribute_value to shared_action_attribute (which is where the order is stored). I can build a simple query (without the left join) linking the three tables but then actions with no attributes would be excluded from my result set (see query 2 below).
The second issue is that I would actually like one row returned for each action with first_attribute and second_attribute as columns instead of two rows.
The final query will be used to create a materialized view.
Here are the tables and examples of what's stored in them:
TABLE i_action
Name Type
ACTION_SEQ NUMBER(10)
ACTION_DATE DATE
ACTION_CODE VARCHAR2(3)
DELETED VARCHAR2(1)
EXAMPLE ROWS
ACTION_SEQ ACTION_DATE ACTION_CODE DELETED
45765668 09-OCT-09 B2 A
45765670 09-OCT-09 BA A
45765672 09-OCT-09 B6 A
45765673 09-OCT-09 B4 A
45765674 09-OCT-09 G1 A
45765675 09-OCT-09 M3 A
TABLE i_attribute_value
Name Type
IA_ACTION_SEQ NUMBER(10)
SACTATT_SACT_CODE VARCHAR2(3)
SACTATT_SAT_TYPE VARCHAR2(3)
VALUE VARCHAR2(50)
EXAMPLE ROWS
IA_ACTION_SEQ SACTATT_SACT_CODE SACTATT_SAT_TYPE VALUE
45765668 B2 ACO 37B
45765670 BA ROA D
45765670 BA ROR P
45765672 B6 CAT C
45765673 B4 RFC E
45765673 B4 TRC P
45765673 B4 RUN 7
45765674 G1 SS 23567
45765674 G1 ASG W
TABLE shared_action_attribute
Name Type
SACT_CODE VARCHAR2(3)
SAT_TYPE VARCHAR2(3)
ORDER NUMBER(2)
TITLE VARCHAR2(60)
EXAMPLE ROWS
SACT_CODE SAT_TYPE ORDER TITLE
B2 ACO 1 Office code
BA ROR 1 Reason for reopen
BA ROA 2 Reopen authority
B6 CAT 1 Category
B4 RFC 1 Receiving function code
B4 RUN 2 Receiving unit code
B4 TRC 3 Transfer reason code
G1 SS 1 Staff sequence
G1 ASG 2 Assignment reason
QUERY 1:
This is my current query along with its results. Most of it is straightforward select but one column is populated using the last_value analytical function (thanks to you guys). The last column in the below view stores the attribute value. What I want is to replace that single column with two columns named first_attribute and second_attribute and to eliminate any other attributes.
SELECT ia.action_seq, ia.action_date, ia.action_code cod,
NVL
(LAST_VALUE (CASE
WHEN ia.action_code = 'G1'
AND iav.sactatt_sat_type = 'SS'
THEN VALUE
WHEN ia.action_code IN ('A0', 'A1')
THEN '67089'
END IGNORE NULLS
) OVER (PARTITION BY ia.ici_charge_inquiry_seq ORDER BY ia.action_date,
ia.serial_number, ia.action_seq),
'67089'
) staff_seq,
value
FROM i_action ia LEFT JOIN i_attribute_value iav
ON iav.ia_action_seq = ia.action_seq
WHERE ia.deleted = 'A';
ACTION_SEQ ACTION_DA COD STAFF_SEQ VALUE
45765668 09-OCT-09 B2 67089 37B
45765670 09-OCT-09 BA 67089 D
45765670 09-OCT-09 BA 67089 P
45765672 09-OCT-09 B6 67089 C
45765673 09-OCT-09 B4 67089 E
45765673 09-OCT-09 B4 67089 P
45765673 09-OCT-09 B4 67089 7
45765674 09-OCT-09 G1 23567 23567
45765674 09-OCT-09 G1 23567 W
45765675 09-OCT-09 M3 23567
QUERY 2:
This query limits to the first two attributes but it also drops actions which have no attributes and it still creates multiple rows for each action instead of a single row with two columns for the attributes.
SELECT ia.action_seq, ia.action_date, ia.action_code cod,
NVL
(LAST_VALUE (CASE
WHEN ia.action_code = 'G1'
AND iav.sactatt_sat_type = 'SS'
THEN VALUE
WHEN ia.action_code IN ('A0', 'A1')
THEN '67089'
END IGNORE NULLS
) OVER (PARTITION BY ia.ici_charge_inquiry_seq ORDER BY ia.action_date,
ia.serial_number, ia.action_seq),
'67089'
) staff_seq,
value
FROM shared_action_attribute saa, ims_action ia, ims_attribute_value iav
WHERE iav.ia_action_seq = ia.action_seq
AND iav.sactatt_sact_code = saa.sact_code
AND iav.sactatt_sat_type = saa.sat_type
AND saa.display_order IN ('1','2')
AND ia.deleted = 'A';
ACTION_SEQ ACTION_DA COD VALUE
45765668 09-OCT-09 B2 67089 37B
45765670 09-OCT-09 BA 67089 D
45765670 09-OCT-09 BA 67089 P
45765672 09-OCT-09 B6 67089 C
45765673 09-OCT-09 B4 67089 E
45765673 09-OCT-09 B4 67089 7
45765674 09-OCT-09 G1 23567 23567
45765674 09-OCT-09 G1 23567 W
I found this pretty complex to try to write out - I hope I've been clear.
Thanks so much!

Ok, here's more information with a simplified question. I figured out the syntax for building my query with the three tables. My final query returns multiple rows (multiple attributes per action). Instead of multiple rows, I'd like two columns (first_attribute, and second_attribute) in a single row (I only need the first two attributes).
Here's the action table:
CREATE TABLE I_ACTION
ACTION_SEQ               NUMBER(10)           NOT NULL,
ACTION_DATE              DATE,
ACTION_CODE              VARCHAR2(3 BYTE)     NOT NULL,
DELETED                  VARCHAR2(1 BYTE),
);With the following rows added:
Insert into I_ACTION (ACTION_SEQ, ACTION_DATE, ACTION_CODE, DELETED)
              Values (45765668, '09-oct-2009', 'B2', 'A');
Insert into I_ACTION (ACTION_SEQ, ACTION_DATE, ACTION_CODE, DELETED)
              Values (45765670, '09-oct-2009', 'BA', 'A');
Insert into I_ACTION (ACTION_SEQ, ACTION_DATE, ACTION_CODE, DELETED)
              Values (45765672, '09-oct-2009', 'B6', 'A');
Insert into I_ACTION (ACTION_SEQ, ACTION_DATE, ACTION_CODE, DELETED)
              Values (45765673, '09-oct-2009', 'B4', 'A');
Insert into I_ACTION (ACTION_SEQ, ACTION_DATE, ACTION_CODE, DELETED)
              Values (45765674, '09-oct-2009', 'G1', 'A');
Insert into I_ACTION (ACTION_SEQ, ACTION_DATE, ACTION_CODE, DELETED)
              Values (45765675, '09-oct-2009', 'M3', 'A');
COMMIT;The attribute table is:
CREATE TABLE I_ATTRIBUTE_VALUE
IA_ACTION_SEQ          NUMBER(10)             NOT NULL,
SACTATT_SACT_CODE      VARCHAR2(3 BYTE)       NOT NULL,
SACTATT_SAT_TYPE       VARCHAR2(3 BYTE)       NOT NULL,
VALUE                  VARCHAR2(50 BYTE),
);With the following rows:
Insert into I_ATTRIBUTE_VALUE (IA_ACTION_SEQ, SACTATT_SACT_CODE, SACTATT_SAT_TYPE, VALUE)
                       Values (45765668, 'B2', 'ACO', '37B');
Insert into I_ATTRIBUTE_VALUE (IA_ACTION_SEQ, SACTATT_SACT_CODE, SACTATT_SAT_TYPE, VALUE)
                       Values (45765670, 'BA', 'ROR', 'P');
Insert into I_ATTRIBUTE_VALUE (IA_ACTION_SEQ, SACTATT_SACT_CODE, SACTATT_SAT_TYPE, VALUE)
                       Values (45765670, 'BA', 'ROA', 'D');
Insert into I_ATTRIBUTE_VALUE (IA_ACTION_SEQ, SACTATT_SACT_CODE, SACTATT_SAT_TYPE, VALUE)
                       Values (45765672, 'B6', 'CAT', 'C');
Insert into I_ATTRIBUTE_VALUE (IA_ACTION_SEQ, SACTATT_SACT_CODE, SACTATT_SAT_TYPE, VALUE)
                       Values (45765673, 'B4', 'RFC', 'E');
Insert into I_ATTRIBUTE_VALUE (IA_ACTION_SEQ, SACTATT_SACT_CODE, SACTATT_SAT_TYPE, VALUE)
                       Values (45765673, 'B4', 'RUN', '7');
Insert into I_ATTRIBUTE_VALUE (IA_ACTION_SEQ, SACTATT_SACT_CODE, SACTATT_SAT_TYPE, VALUE)
                       Values (45765673, 'B4', 'TRC', 'P');
Insert into I_ATTRIBUTE_VALUE (IA_ACTION_SEQ, SACTATT_SACT_CODE, SACTATT_SAT_TYPE, VALUE)
                       Values (45765674, 'G1', 'SS', '23567');
Insert into I_ATTRIBUTE_VALUE (IA_ACTION_SEQ, SACTATT_SACT_CODE, SACTATT_SAT_TYPE, VALUE)
                       Values (45765674, 'G1', 'ASG', 'W');
COMMIT;And finally, the shared table:
CREATE TABLE SHARED_ACTION_ATTRIBUTE
SACT_CODE      VARCHAR2(3 BYTE)               NOT NULL,
SAT_TYPE       VARCHAR2(3 BYTE)               NOT NULL,
TITLE          VARCHAR2(25 BYTE)              NOT NULL,
DISPLAY_ORDER NUMBER(2)                      NOT NULL
);With the following rows:
Insert into SHARED_ACTION_ATTRIBUTE (SACT_CODE, SAT_TYPE, TITLE, DISPLAY_ORDER)
                             Values ('B4', 'RFC', 'Y', 'Rcv. Function Code', 1);
Insert into SHARED_ACTION_ATTRIBUTE (SACT_CODE, SAT_TYPE, TITLE, DISPLAY_ORDER)
                             Values ('B6', 'CAT', 'Y', 'Category', 1);
Insert into SHARED_ACTION_ATTRIBUTE (SACT_CODE, SAT_TYPE, TITLE, DISPLAY_ORDER)
                             Values ('G1', 'SS', 'Y', 'Staff Name', 1);
Insert into SHARED_ACTION_ATTRIBUTE (SACT_CODE, SAT_TYPE, TITLE, DISPLAY_ORDER)
                             Values ('B2', 'ACO', 'Y', '"Other" Office Code', 1);
Insert into SHARED_ACTION_ATTRIBUTE (SACT_CODE, SAT_TYPE, TITLE, DISPLAY_ORDER)
                             Values ('B4', 'RUN', 'Y', 'Receiving Unit Number', 2);
Insert into SHARED_ACTION_ATTRIBUTE (SACT_CODE, SAT_TYPE, TITLE, DISPLAY_ORDER)
                             Values ('B6', 'LEP', 'N', 'LEP Issue/Sub Category', 2);
Insert into SHARED_ACTION_ATTRIBUTE (SACT_CODE, SAT_TYPE, TITLE, DISPLAY_ORDER)
                             Values ('B4', 'TRC', 'Y', 'Transfer Reason Code', 3);
Insert into SHARED_ACTION_ATTRIBUTE (SACT_CODE, SAT_TYPE, TITLE, DISPLAY_ORDER)
                             Values ('B6', 'NEP', 'N', 'NEP Issue', 3);
Insert into SHARED_ACTION_ATTRIBUTE (SACT_CODE, SAT_TYPE, TITLE, DISPLAY_ORDER)
                             Values ('G1', 'ASG', 'Y', 'Assignment Reason', 2);
Insert into SHARED_ACTION_ATTRIBUTE (SACT_CODE, SAT_TYPE, TITLE, DISPLAY_ORDER)
                             Values ('B2', 'MSN', 'S', 'Machine Serial Number', 3);
Insert into SHARED_ACTION_ATTRIBUTE (SACT_CODE, SAT_TYPE, TITLE, DISPLAY_ORDER)
                             Values ('BA', 'ROR', 'Y', 'Reopen Reason', 1);
Insert into SHARED_ACTION_ATTRIBUTE (SACT_CODE, SAT_TYPE, TITLE, DISPLAY_ORDER)
                             Values ('BA', 'ROA', 'Y', 'Reopen Authority', 2);
COMMIT;Now, this is my current query (it's changed from my first post):
SELECT ia.action_seq, ia.ici_charge_inquiry_seq, ia.action_date,
       ia.serial_number, ia.reporting_office, ia.reporting_function,
       ia.reporting_unit, ia.action_code, ia.machine_serial_number,
       NVL
          (LAST_VALUE (CASE
                          WHEN ia.action_code = 'G1'
                             THEN VALUE
                          WHEN ia.action_code IN ('A0', 'A1')
                             THEN '67089'
                       END IGNORE NULLS
                      ) OVER (PARTITION BY ia.ici_charge_inquiry_seq ORDER BY ia.action_date,
            ia.serial_number, ia.action_seq),
           '67089'
          ) staff_seq,
       (CASE
          WHEN display_order = '1'
          THEN VALUE
       END) first_attribute,
       (CASE
          WHEN display_order = '2'
          THEN VALUE
       END) second_attribute
FROM ims_action ia
LEFT JOIN ims_attribute_value iav
       ON iav.ia_action_seq = ia.action_seq
LEFT JOIN shared_action_attribute
       ON sactatt_sact_code = sact_code
     AND sactatt_sat_type = sat_type
WHERE ia.deleted = 'A';Which gives me the following results:
ACTION_SEQ ACTION_DA ACT STAFF_SEQ FIRST_ATTRIBUTE SECOND_ATTRIBUTE
45765668 09-OCT-09 B2 67089     37B
45765670 09-OCT-09 BA 67089                     D
45765670 09-OCT-09 BA 67089     P
45765672 09-OCT-09 B6 67089     C
45765673 09-OCT-09 B4 67089     E
45765673 09-OCT-09 B4 67089                     7
45765673 09-OCT-09 B4 67089
45765674 09-OCT-09 G1 23567                     W
45765674 09-OCT-09 G1 23567     23567
45765675 09-OCT-09 M3 23567                                       The result I WANT is similar but I want the two separate attribute columns on one row as such:
ACTION_SEQ ACTION_DA ACT STAFF_SEQ FIRST_ATTRIBUTE SECOND_ATTRIBUTE
45765668 09-OCT-09 B2 67089     37B
45765670 09-OCT-09 BA 67089     P               D
45765672 09-OCT-09 B6 67089     C
45765673 09-OCT-09 B4 67089     E               7
45765674 09-OCT-09 G1 23567     23567           W
45765675 09-OCT-09 M3 23567                          Thanks so much!

Help with sql - Left Join

Hi,
Below are the details of what I am attempting to do.
DB version: 10.2.0.4.0
Sample Table Definition
create table t_cnf
conf_id number,
conf_value number,
conf_cat_id number,
actv_flg    char(1)
create table t_int_act
int_acc_id   number,
frst_mrch_id number,
create_date date
create table t_int_act_cast
int_acc_id   number,
cast_id      number
create t_cast_alt_nmnt
cas_alt_nmt_id number,
cas_alt_id     number,
cast_id        number,
enrl_flg       char(1),
src_id         number
);Sample Data
insert into t_cnf values (1, 78965098, 12, 'Y');
insert into t_cnf values (1, 78965098, 13, 'Y');
insert into t_int_act values (234,78965098, trunc(sysdate) - 1);
insert into t_int_act_cast values (234, 560432);
insert into t_cas_alt_nmnt values (1, 2, 560432, 'Y', 2); Need to fetch all cast_ids that are not in t_cast_alt_nmnt or cast_ids that are present in t_cast_alt_nmnt but have t_cast_alt_nmnt.enrl_flg = 'N' and t_cast_alt_nmnt.cast_alt_id in (2,3) and t_cast_alt_nmnt.src_id <> 2
for t_int_act.frst_mrch_ids matching t_cnf.conf_vale
Records fetch will insert a record into t_cast_alt_nmnt with css_alt_id 2 or 3 (determined by pe_or_pd).
I attempted to write below sql. This works fine when cast_id does not exists in t_cast_alt_nmnt but will not return correct results when there is a record in t_cast_alt_nmnt matching above criteria.
select
    iac.cast_id                            cast_id,
    sysdate                                upd_date,
    case
        when c.conf_cat_id = 12 then 2
        when c.conf_cat_id = 13 then 3
    end
        pe_or_pd
from
    t_cnf                  c
join
    t_int_act          ia
on
    ia.frst_mrch_id = c.conf_value
join
    t_int_act_cast iac
on
    ia.int_acc_id = iac.int_acc_id
left join
    t_cast_alt_nmnt     can
on
    can.cast_id = iac.cast_id     and
    can.enrl_flg = 'N'            and
    can.cas_alt_id in (2,3)       and
    can.src_id <> 2
where
    c.conf_cat_id              in (12,13)                           and
    c.actv_flg                 = 'Y'                                and
    -- Fetch all new customer created day before.
    ia.create_date             >= trunc(sysdate) - 1
    Expected results
With no cast_id record in t_cast_alt_nmnt
cast_id upd_date pe_or_pd
560432 4/19/2012 2
560432 4/19/2012 3
With cast_id record in t_css_alt_nmt (insert provided)
cast_id upd_date pe_or_pd
560432 4/19/2012 3
Appreciate your help
Edited by: user572194 on Apr 19, 2012 1:04 PM

Thanks Frank for taking time to look into this and providing sql. I will test is against use cases (mentioned below).
And I apologize for the typos. I had to change table and column names as it is policy of our company not to post data model details in public forums.
Requirement:
1. New cast ids will be added daily and these will get inserted into t_int_act and t_int_act_cas
2. t_cnf has 2 conf_cat_id configured 12 and 13 and each conf_cat_id will have same conf_values (same as t_int_act.frst_mrch_id) but actv_flg might be different (set to N for 12 and Y for 13). Need to fetch only active ones
3. t_cas_alt_nmnt will have cast_ids that are enrolled to receive certain mails if enrl_flg is Y for these. Not all cast_ids will have record in this table.
When a cast_id is enrolled by customer service, a record will get inserted with src_id = 2.
4. Requirement is to enroll new cast_ids created with frst_mrch_id matching t_cnf.conf_value where conf_cat_id in (12,13)
Match criteira:
If t_int_act_cas.cast_id exists in t_cas_alt_nmnt and have enrl_flg = 'Y' for cas_alt_id = 2 then
insert record with same cast_id, enrl_flg = 'Y' and css_alt_id = 3
If t_int_act_cas.cast_id exists in t_cas_alt_nmnt and have enrl_flg = 'Y' for cas_alt_id = 3 then
insert record with same cast_id, enrl_flg = 'Y' and css_alt_id = 2
If t_int_act_cas.cast_id exists in t_cas_alt_nmnt and have enrl_flg = 'N' for cas_alt_id in (2,3) and src_id = 2 then
Ignore this record.
if t_int_act_cas.cast_id not exists in t_cas_alt_nmnt then
insert 1 record each with cast_id, enrl_flg = 'Y' for css_alt_id 2 and 3
Hope above explanation makes sense.
By the way I tried below sql. Yet to test it for all use cases but it worked for the last two.
Note on PE_OR_PD column. I am just using this column to write separate inserts for css_alt_id 2 and 3.
select
     cast_id,
     upd_date,
     pe_or_pd
from
     (select
                iac.cast_id                        cast_id,
                sysdate                            upd_date,
                case
                    when c.conf_cat_id = 12 and can.cas_alt_id in (2,3) and enrl_flg = 'Y' then null
                    when c.conf_cat_id = 13 and can.cas_alt_id in (2,3) and enrl_flg = 'Y' then null
                    when c.conf_cat_id = 12 and nvl(can.cas_alt_id,2) = 2 and nvl(can.enrl_flg,'Y') = 'N' and can.src_id <> 2 then 'PE'
                    when c.conf_cat_id = 13 and nvl(can.cas_alt_id,3) = 3 and nvl(can.enrl_flg,'Y') = 'N' and can.src_id <> 2 then 'PD'
                    when c.conf_cat_id = 12 and nvl(can.cas_alt_id,2) = 2 and nvl(can.enrl_flg,'Y') = 'Y' then 'PE'
                    when c.conf_cat_id = 13 and nvl(can.cas_alt_id,3) = 3 and nvl(can.enrl_flg,'Y') = 'Y' then 'PD'
                end
                    pe_or_pd
            from
                t_cnf              c,
                t_int_act          ia,
                t_intl_act_cus     iac,
                t_cas_alt_nmnt     can
            where
                c.conf_value               = ia.frst_mrch_id               and
                ia.internal_account_id     = iac.int_act_id                and
                can.cast_id(+)             = iac.cast_id                   and
                c.conf_cat_id              in (12,13)                      and
                c.actv_flg                 = 'Y'                           and
                -- Fetch all new customer created after last run.
                ia.create_date             >= trunc(sysdate) - 1
     ) enrl_cust
where
    pe_or_pd is not null
                ;

Left Join query: revisited... I have to explain at user meeting tomm. pls..

Hi Everyone,
Can someone pls shed some light on the situation below
I am understanding alot of what Michael and Rod wrote.... with my prev. post of LEFT JOIN and testing for
not null and doing a double Boolean OR etc.
- but- AM NOT understanding why the IS NOT NULL works, without the double boolean OR
Pls help... have to explain what left join means to user tomm. I'm going to demo the query below and
not the one with the double boolean OR bec. maybe too much info to present at one sitting. tx, sandra
=====================
the query below is left joining the STUDENT table to
HOLD table.
The HOLD table - contains rows for students who have holds on their record.
a student can have more than one hold (health, HIPAA, basic life saving course)
BUT, for this query: I'm only interested that a hold exists, so I'm choosing MAX on hold desc.
Selecting a MAX, helps me, bec. it reduces my join to a 1 to 1 relationship, instead of
1 to many relationship.
Before I posted this thread at all, the LEFT JOIN below testing for IS NOT NULL worked w/o
me having to code IS NOT NULL twice....
Is that because, what's happening "behind the scenes" is that a temporary table containing all max rows is being
created, for which Discoverer has no predefined join instructions, so it's letting me do a LEFT JOIN and have
the IS NOT NULL condition.
I would so appreciate clarification. I have a meeting on Tues, for which I have to explain LEFT JOINS to the user
and how they should create a query. I need to come up with rules.
If I feel "clear", I asked my boss to buy Camtasia videocast software to create a training clip for user to follow.
Also, if any Banner user would like me to email the DIS query to run on their machine, I would be glad to do so.
thx sooo much, Sandra
SELECT O100384.ACADEMIC_PERIOD, O100255.ID, O100384.ID, O100255.NAME, O100384.NAME, O100255.PERSON_UID, O100384.PERSON_UID, MAX(O100255.HOLD_DESC)
FROM ODSMGR.HOLD O100255, ODSMGR.STUDENT O100384
WHERE ( ( O100384.PERSON_UID = O100255.PERSON_UID(+) ) ) AND ( O100384.ACADEMIC_PERIOD = '200820' )
GROUP BY O100384.ACADEMIC_PERIOD, O100255.ID, O100384.ID, O100255.NAME, O100384.NAME, O100255.PERSON_UID, O100384.PERSON_UID
HAVING ( ( MAX(O100255.HOLD_DESC(+)) ) IS NOT NULL )
ORDER BY O100384.NAME ASC

Hi,
OK, I will try to explain this. When you outer join table B to table A then the rows in table A which do not match any rows in table B will returned with NULL in the columns from the table B.
Oracle uses the syntax ( +) for outer joins. Now if you add another condition using the ( +) syntax (as shown below) the condition will be processed before the table is joined. Therefore if table A does not match any rows in table B which have col2=1 then the row from table A will be returned with NULLs for the table B columns.
SELECT A.col1, B.col1
FROM A, B
WHERE A.col1 = B.col1( +)
AND B.col2( +)=1
Now, if the condition B.col2=1 was used instead then the condition would be processed after the join and therefore the rows from table A that were joined to table B but did not meet the condition would not be returned by the query.
This applies to a WHERE clause and to the HAVING clause, but with one exception. If you use the ( +) within a group function in a HAVING clause then the ( +) will have no affect because the condition must be processed after group by and group by can only be processed after the join. Therefore MAX(B.col2( +)) = 1 is processed after the join even through it uses the ( +) syntax.
You cannot use an OR or an IN with the ( +) syntax because the meaning of the OR in this situation is ambiguous, is the OR done before or after the join. A query with an OR or IN in an outer will fail with an Oracle ORA-01719 error. Discoverer recognises this situation and removes the ( +) so that the error does not occur. However, without the ( +) the conditions are processed after the join.
Using the ( +) with IS NULL, e.g. col2( +) IS NOT NULL works in the same way. You just have to remember that the col2( +) could be NULL as a result of the outer join and therefore if the condition is processed after the query then the IS NOT NULL will remove the outer joined rows.
Hope that is clear.
Rod West

Left Join Query Question

Version 10.2.0.4.0
I have a question on the expected behavior of the query below.
When I run the query below with the constraint on t1.partid = 789, I get the query result t2.Indicator showing "SPECIAL" as expected.
However, if I remove the constraint, and return all orders and parts, for the "789" part, the Indicator column is null.
select t1.orderid, t1.partid, t2.Indicator
from Orders a left outer join
select partid, 'SPECIAL' as Indicator
from vendors
where vendorname like '%ABC%'
) t2
on t1.partid = t2.partid
where t1.partid = '789'
I can address the issue with a case statement (below) or likely restructuring into a better statement.
But I'm just curious if this is expected or if there is some SQL rule being violated in the first example.
I tried to search for this to see if it was already addressed but didn't have much luck.
This works:
select t1.orderid, t1.partid,
case when t1.partid is not null then "SPECIAL" else null end as Indicator
from Orders a left outer join
select partid, 'SPECIAL' as Indicator
from vendors
where vendorname like '%ABC%'
) t2
on t1.partid = t2.partid

Sorry, it's been a while since I posted and should have read the rules. And I didn't properly reference the alias. So Post #1 was bad.
When I mockup a small set of data (shown below), I don't get the error. The original query actually joins to a few other (seemingly) irrelevant tables and I tried to simplify it here So I guess if I can't replicate it, then there might not be much assistance that can be provided.
This was more of a curiousity than anything else to see if perhaps someone came across this before.
For what it's worth:
create table t1 (orderid number,
             partid varchar2(20)
create table t2
        (vendorid varchar2(20),
         partid varchar2(20)
insert into t1 values(1, '123');
insert into t1 values(2, '456');
insert into t1 values(3, '789');
insert into t2 values ('ABC','789');
insert into t2 values ('DEF','123');
insert into t2 values ('EFG','456');
insert into t2 values ('ABC','7891');
insert into t2 values ('DEF','1231');
insert into t2 values ('EFG','4561');
select t1.orderid, t1.partid, t2.Indicator
from t1 left outer join
select partid, 'SPECIAL' as Indicator
from t2
where vendorid like '%ABC%'
) t2
on t1.partid = t2.partid
the query that gives unexpected behavior is (although I can't replicate on this simplified version):
select t1.orderid, t1.partid, t2.Indicator
from t1 left outer join
select partid, 'SPECIAL' as Indicator
from t2
where vendorid like '%ABC%'
) t2
on t1.partid = t2.partid

Left Join query help

select * from ort
bid mid
18083 7
select * from st
tid bid mid act
318 18083 5 20091
318 18083 6 20091
321 18083 7 NULL
318 18083 16 23970
my out put should be
318 18083 6 20091
(basic idea is
In order to do this I wrote the following query. But I am getting the following error ora-01799. How do i fix this?
select ort.bid,st.tid from ort
left join st
on ort.BiD = st.bid
and st.mid in
(select max(MID)
from St
where BID = ort.BID and TID is not null and MID <= ort.MID
and ACT is not null
)

May be this will clear up what I am trying to acheive a little better. I truly appreciate all your help. I have enclosed column headings and data items within double quotes and data is enclosd in double-quotes and separated by comma.
SQL> desc ort
"Name" "Null?" "Type"
"BID" "NUMBER"
"MID" "NUMBER"
SQL> desc st
"Name" "Null?" "Type"
"TID" "NUMBER"
"BID" "NUMBER"
"MID" "NUMBER"
"ACT" "NUMBER"
"LTP" "NUMBER(10)"
SQL> select * from ort
2 ;
"BID" "MID"
"18083", "7"
"18083", "6"
"18083", "16"
"18083", "277"
"18083", "117"
SQL> select * from st;
"TID" "BID" "MID" "ACT" "LTP"
"NULL", "18083", "117", "NULL", "246"
"NULL", "18083", "277", "NULL", "246"
"246", "18083", "272", "54998", "246"
"318", "18083", "6", "20091" "NULL"
"321", "18083", "7", "NULL", "NULL"
"318", "18083", "16", "23970", "NULL"
6 rows selected.
SQL> SELECT ort.bid, st.tid, st.mid, st.act
2 FROM ort
3 LEFT OUTER JOIN
4 st
5 ON ort.bid = st.bid
6 AND st.mid IN (SELECT mid
7 FROM myortview);
"BID" "TID" "MID" "ACT"
"18083", "246", "272", "54998"
"18083", "246", "272", "54998"
"18083", "246", "272", "54998"
"18083", "246", "272", "54998"
"18083", "246", "272", "54998"
SQL> -- expected result is
bid tpid ort.mid st. mid
"18083", "246", "277", "272"
"18083", "246", "117", "116"
"18083", "318", "16", "16"
"18083", "318", "6", "6"
"18083", "318", "7", "6"

Left join query prob

Hi,
I have one ejbql for selecting records from one table which are not in the other table.There is actually records in the data base but by using this query it is retrieving noting . The corresponding pl/sql query is working fine and it is retrieve correct result .what is wrong with my query.. Plz help me to correct this query...
My ejbql is below...
EJB-QL
SELECT C.name FROM person C LEFT JOIN C.address FC WHERE C.id.name= FC.id.name AND FC.id.pcode IS NULL
There is no result while executing this query. The correspoinding pl sql query is
PL/SQL
SELECT e_person .* FROM e_person ep LEFT JOIN e_address ea ON ep .name= ea .name WHERE ea.pcode IS NULL
plz help ...
Thanks in advance
Ani

Enable logging and include the SQL generated for the JPQL.
JPQL will also join via the primary/foreign key define in the mapping when you do C.address, if this is not name then you may be joining by something else. You could just declare the Address independent of the Employee if you do not wish to join by primary key (although this seems odd).
-- James : http://www.eclipselink.org

Help Required with an OUTER JOIN Query

Hi,
I need a list of records carrying UserID and ALL SectionIDs and SectionTitles he/she is associated
with so I created following query:
SELECT UsersSections.UserID, Sections.SectionID, Sections.SectionTitle
FROM UsersSections, Sections
WHERE UsersSections.SectionID(+) = Sections.SectionID AND UsersSections.UserID = 1
Where my tables are:
- UsersSections (UserID, SectionID)
- Sections (SectionID, SectionTitle)
The problem is that if I exclude WHERE UserID = '1' clause the query return the desired result i.e. ALL Sections
And ALL Users associated with the any Section(s). But I need results for a particular UserID but
Including WHERE UserID = '1' clause only return records for that User only not the sections he/she belongs to which was the purpose of using OUTER JOIN.
Any help will be highly appreciated.
Thanks.
AKG

userssections.userid (+) = 1

How to make a customize form with optional parameter and left join

Hi,
I am trying to make a report with a left join. I also want ot have optional parameters in it.
I am using the Create Reports From SQL Query method:
SQL is :
select ename, sal
from scott.emp left join scott.dept
on scott.emp.deptno = scott.dept.deptno
where sal >= :lower_sal
and sal <= :higher_sal;
However, if I do it this way, I those 2 parameters are not optional.... How can I make them optional?
If I use the Create Reports From Query Wizard method, I can make the parameters optional, but then I cannot do the left join...
Thanks,
Wilson

hi,
to catch null values on both sides I use:
where nvl(sal,0) >= nvl(:lower_sal,nvl(sal,0))
and nvl(sal,0) <= nvl(:higher_sal,9999999999)
otherwise there will be no rows in the report where the value of sal is null, even if there are no selection criteria entered.
regards Michael

LEFT JOIN not exactly working

Hi all,
Hoping you can help me with my SQL query. I want to do a
simple LEFT JOIN between two tables...fair enough right? Yeah,
well, it works and all rows are returned from the LEFT table even
if there are nmo matching rows in the RIGHT table.
BUT, when I apply a few conditions using WHERE after this
LEFT JOIN the whole point of the LEFT JOIN seems to not work. I
only get rows from the LEFT where they match in the RIGHT.
For example...this following code works and returns all LEFT
rows despite there not being a match in the RIGHT.
<cfquery name="getSchemaFields" datasource="#request.dsn#"
username="#request.username#" password="#request.password#">
SELECT schema_#getSchemas.schema_token#_fields.*,
fields_content.*
FROM schema_#getSchemas.schema_token#_fields
LEFT JOIN fields_content
ON schema_#getSchemas.schema_token#_fields.field_type_uuid =
fields_content.field_content_field_uuid
</cfquery>
But, what I really need is to apply some conditions on the
rows I want from the right table based on an ID like as follows...
<cfquery name="getSchemaFields" datasource="#request.dsn#"
username="#request.username#" password="#request.password#">
SELECT schema_#getSchemas.schema_token#_fields.*,
fields_content.*
FROM schema_#getSchemas.schema_token#_fields
LEFT JOIN fields_content
ON schema_#getSchemas.schema_token#_fields.field_type_uuid =
fields_content.field_content_field_uuid
WHERE fields_content.field_content_item_id = <cfqueryparam
cfsqltype="cf_sql_integer" value="#getSchemas.item_id#" />
OR fields_content.field_content_item_id = NULL
AND fields_content.field_content_item_uuid = <cfqueryparam
cfsqltype="cf_sql_varchar" value="#getSchemas.item_uuid#" />
OR fields_content.field_content_item_uuid = NULL
</cfquery>
Now I don't get any errors but what I do get is rows from the
left ONLY when they match rows in the RIGHT. I still need all the
rows from the LEFT despite this. The WHERE conditions seems to stop
this happening.
I know it's probably blindingly simple but I just can't get
my head around it and I'm pulling my hair out about it!
Hope somebody can assist me in this.
Many thanks in advance!!
Mikey.

> Now I don't get any errors but what I do get is rows
from the left ONLY when
> they match rows in the RIGHT. I still need all the rows
from the LEFT despite
> this. The WHERE conditions seems to stop this happening.
You need to stop to think about how the query is being
executed.
FIRST the FROM recordset is created which is the result of
the join
statement. This will have all your "left" rows, and null-data
for
unmatched "right" rows.
THEN the WHERE clause is executed, which will filter out any
rows from the
recordset create in the FROM recordset.
So if yuor data is this:
TBL_FRUIT
FRT_ID, FRT_NAME
1, Apple
2, Banana
3, Cherry
TBL_STOCK (<sung>we have no bananas, we have no bananas
today</sung>)
STK_ID, FRT_ID, STK_LEVEL
1, 1, 12
2, 3, 100
And if you FROM clause is this:
from TBL_FRUIT F left outer join TBL_STOCK S on F.FRT_ID =
S.FRT_ID
You get a record set thus:
1, Apple, 12
2, Banana, null
3, Cherry, 100
Now if you have a WHERE filter, thus:
WHERE S.STK_LVEL > 0
You're going tobe filtering out the banana row, because it
DOESN'T have a
STK_LEVEL > 0
1, Apple, 12
3, Cherry, 100
You need to get all your filtering done on the STOCK table
*before*
left-joining it to the FRUIT table, if you want to have all
the fruit rows
in the final result.
Dan's detailed how to effect this.
Make sense?
Adam

Help with Converting an Access query

Hello:
First time poster and would appreciate some help in converting this Access query into T-SQL so I can use in a Stored Procedure. I don't need help in resolving the syntax for the variables as parameter in the second query, but stuck in writing the first query
in T-SQL . I assume I need some type of nested query with a left join to another query in T-SQL.
How do I convert this from Access into MS-SQL
SELECT TBL_MONTH.L_Month, TBL_MONTH.L_MonthName
FROM TBL_MONTH LEFT JOIN qry_MonthCheck ON TBL_MONTH.L_Month = qry_MonthCheck.L_Month
WHERE (((qry_MonthCheck.L_Month) Is Null));
qryMonthCheck in Access is defined as
SELECT TBL_MONTH.L_Month, TBL_SIGNOFF.SO_YEAR, TBL_SIGNOFF.SO_USER, TBL_SIGNOFF.SO_LOCATION
FROM TBL_MONTH RIGHT JOIN TBL_SIGNOFF ON TBL_MONTH.L_Month = TBL_SIGNOFF.SO_MONTH
WHERE (((TBL_SIGNOFF.SO_YEAR)=[forms]![frm_signoff]![cboyear]) AND ((TBL_SIGNOFF.SO_LOCATION)=[Tempvars]![tmpVarUserLOC]));

It is very much up to personal taste. For tables I use no prefix at all. Or suffix. I prefer plural: categories, products, etc. For junction tables, I drop the plural in the first entity, for instance productcategories. As for the case, many people prefer
initial uppercase, while I go for lowercase only. But initial uppercase has its points, particularly in documentation. I am a staunch advocate of using case-sensitive collation for metadata. I don't see any point in mixing productcategories, Productcategories,
ProductCategories etc. That can only cause confusion.
As for either entities, I don't use views much, and I don't have any prefix for these either. In fact, several views I've been involved used to be tables once upon a time.
If you want to add a marker to the object name, I recommend using a suffix. It is much easier to find objects in the version control system and other browser, when not everything is cluttered on the same letter. For instance, I typically add _sp at the end
of stored procedure names.
Erland Sommarskog, SQL Server MVP, [email protected]

3 tables with left joins - bug?

Hello,
i am making query where i encounter problem with left join in oracle. I am using oracle 10g and i prepare simple test case.
he is testing tables and datas - really simple i think:
drop table t1;
drop table t2;
drop table t3;
create table t1 (a number not null);
create table t2 (a number, b number);
create table t3 (b number);
insert into t3 values (1);
insert into t3 values (2);
insert into t3 values (3);
insert into t1 (a) values (1);
insert into t2 (a,b) values (1,1);
insert into t1 (a) values (2);
insert into t2 (a,b) values (2, null);
insert into t1 (a) values (3);
insert into t1 (a) values (4);
insert into t2 (a,b) values (4,1);
insert into t1 (a) values (5);
insert into t2 (a,b) values (5,3);
and now query with left joins:
select
t1.a
, t2.a, t2.b
, t3.b
from
t1, t2, t3
where
t1.a = t2.a (+)
and t2.b = t3.b (+)
and t3.b is null
order by t1.a
i get two rows as result:
A A_1 B B_1
2 2 null null
3 null null null
i expect these rows but when i change my query - i dont want get back t3.b column:
select
t1.a
, t2.a, t2.b
/* , t3.b*/
from
t1, t2, t3
where
t1.a = t2.a (+)
and t2.b = t3.b (+)
and t3.b is null
order by t1.a
i get only one row
A A_1 B
2 2 null
My question is simple how can i only by changing columns getting back change number of returned rows? I must say i dont expect these result i expect two rows again.
Thanks for help.

BluShadow wrote:
I think I know what you are getting at.
By testing for null on t3.b when you aren't selecting the column, you are enforcing oracle to perform the join through t2 onto t1, but Oracle can't join because t2 has no matching row (although it's outer joined to t1) and therefore, for the one row it can't actually determine if t3.b is null or not, so that row can't match the conditions in a "true" sense and be displayed. If you select the column then oracle can test its nullness ok. (Perhaps this is a bug, I don't know, it's just how I know it works)If you get different results only by changing the projection part of the query this is a bug and nothing else. I can't reproduce using Oracle 10g XE, I get in both cases shown the expected two rows.
What versions are you using to test this?
SQL>
SQL> select * from v$version
2 where rownum <= 1;
BANNER
Oracle Database 10g Express Edition Release 10.2.0.1.0 - Product
SQL>
SQL> drop table t1 purge;
Table dropped.
SQL> drop table t2 purge;
Table dropped.
SQL> drop table t3 purge;
Table dropped.
SQL>
SQL> create table t1 (a number not null);
Table created.
SQL> create table t2 (a number, b number);
Table created.
SQL> create table t3 (b number);
Table created.
SQL>
SQL> insert into t3 values (1);
1 row created.
SQL> insert into t3 values (2);
1 row created.
SQL> insert into t3 values (3);
1 row created.
SQL>
SQL> insert into t1 (a) values (1);
1 row created.
SQL> insert into t2 (a,b) values (1,1);
1 row created.
SQL>
SQL> insert into t1 (a) values (2);
1 row created.
SQL> insert into t2 (a,b) values (2, null);
1 row created.
SQL>
SQL> insert into t1 (a) values (3);
1 row created.
SQL>
SQL> insert into t1 (a) values (4);
1 row created.
SQL> insert into t2 (a,b) values (4,1);
1 row created.
SQL>
SQL> insert into t1 (a) values (5);
1 row created.
SQL> insert into t2 (a,b) values (5,3);
1 row created.
SQL>
SQL> commit;
Commit complete.
SQL>
SQL> select t1.a
2       , t2.a, t2.b
3       , t3.b
4 from
5         t1 left outer join t2 on (t1.a = t2.a)
6            left outer join t3 on (t2.b = t3.b)
7 where t3.b is null
8 order by t1.a;
         A          A          B          B
         2          2
         3
SQL>
SQL> select t1.a
2       , t2.a, t2.b
3 --     , t3.b
4 from
5         t1 left outer join t2 on (t1.a = t2.a)
6            left outer join t3 on (t2.b = t3.b)
7 where t3.b is null
8 order by t1.a;
         A          A          B
         2          2
         3
SQL>Regards,
Randolf
Oracle related stuff blog:
http://oracle-randolf.blogspot.com/
SQLTools++ for Oracle (Open source Oracle GUI for Windows):
http://www.sqltools-plusplus.org:7676/
http://sourceforge.net/projects/sqlt-pp/

Don'T repeat item with a LEFT JOIN QUERY

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