Left join to another database

Hello
I had a scenario where I need to write a query that gets SQL Server database records, but have a left join on Oracle table, I know we can achiev this link between Oracle and SQL DB, but my team of DB are unwilling to create links from DB, is there a way probably from data models We can write a query that can call Oracle table too?

Here is an article from blog of tim on the subject:

http://blogs.Oracle.com/XmlPublisher/2008/07/multiple_datasources_i.html

Tags: Business Intelligence

Similar Questions

Left Join with a subquery
Hey everybody!

I have some difficulty in trying to create a SQL query.

I have the following tables:

-Table Products: Product list
CREATE TABLE (PRODUCTS)
PRODUCT_ID INTEGER NOT NULL,
KEY ("PRODUCT_ID") PRIMARY CONSTRAINT 'PK_PRODUCTS '.
);

-Orders table: Decreed this product
CREATE TABLE ORDERS)
ORDER_ID INTEGER NOT NULL,
PRODUCT_ID INTEGER NOT NULL, / * FK PRODUCTS (PRODUCT_ID) * /.
KEY ("ID_PEDIDO") PRIMARY CONSTRAINT 'PK_ORDERS '.
);

-Orders_Approval table: register when an order is approved
CREATE TABLE ORDERS_APPROVAL)
ORDER_ID INTEGER NOT NULL, / * FK ORDERS (ORDER_ID) * /.
APPROVAL_DATE DATE NOT NULL,
USER_ID INTEGER,
KEY("ORDER_ID","APPROVAL_DATE") PRIMARY CONSTRAINT 'PK_ORDERS_APPROVAL '.
);

-Table Orders_ApprovalData: Register more details on the amenities of the order
CREATE TABLE ORDERS_APPROVAL_DETAILS)
APPROVALDET_ID INTEGER NOT NULL,
ORDER_ID INTEGER NOT NULL, / * FK ORDERS_APPROVAL (ORDER_ID) * /.
APPROVAL_DATE DATE NOT NULL, / * FK ORDERS_APPROVAL (APPROVAL_DATE) * /.
KEY ("APPROVALDET_ID") PRIMARY CONSTRAINT 'PK_ORDERS_APPROVAL_DETAILS '.
);

The thing is that an order may OU cannot be approved. Thus, there could be no record of an order in ORDERS_APPROVAL.

In addition, an order can have more than one approval.

Here is the data that I use:

/===========\
| PRODUCTS |
|===========|
| PRODUCT_ID |
|===========|
| 1.
|===========|
| 2.
|===========|
| 3.
\===========/

/========================\
| ORDERS |
|========================|
| ORDER_ID | PRODUCT_ID |
|===========|============|
| 27. 1.
|===========|============|
| 28. 2.
|===========|============|
| 29. 3.
\===========|============/

/=========================================\
| ORDERS_APPROVAL |
|=========================================|
| ORDER_ID | APPROVAL_DATE | USER_ID.
|===========|================|============|
| 27. 01/10/2009 | 56.
|===========|================|============|
| 27. 04/10/2009 | 96.
|===========|================|============|
| 29. 03/10/2009 | 77.
\===========|================|============/

/=============================================\
| ORDERS_APPROVAL_DETAILS |
|=============================================|
| APPROVALDET_ID | ORDER_ID | APPROVAL_DATE |
|================|===========|================|
| 1. 27. 01/10/2009 |
|================|===========|================|
| 2. 27. 04/10/2009 |
|================|===========|================|
| 3. 29. 03/10/2009 |
\================|===========|================/
I need to create a query that returns the data in all tables, but for orders with more than one certification,
the query must return only the last record. It is also necessary return orders that have not yet been approved.

My first query looked like this:

SELECT
*
Of
ORD IN ORDERS,
PRODUCT PROD,
ORDERS_APPROVAL ORDAPPROV,
ORDERS_APPROVAL_DETAILS ORDAPPDET
WHERE
PROD. PRODUCT_ID = DSB. PRODUCT_ID
AND ORDAPPROV. ORDER_ID (+) IS DSB. ORDER_ID
AND ORDAPPDET. ORDER_ID (+) IS ORDAPPROV. ORDER_ID
AND ORDAPPDET. DATA_APPROVAL_DATE (+) IS ORDAPPROV. APPROVAL_DATE

PS: I use the Oracle 8 syntax because it's the server I'll use. In addition, I can't change the design of database.

This query returns the data in table all. Because I used LEFT JOIN "(+)" to join the table orders_approval with the orders table, I am able to see even the orders with no approval.

But this way, I see also two approvals for order 27 (with the data above, this order was approved twice). I need to reach my paintings in the last approval for each order is but should be a left join so I can see the orders with no approval.

I tried this way:

SELECT
*
Of
ORD IN ORDERS,
PRODUCT PROD,
ORDERS_APPROVAL ORDAPPROV,
ORDERS_APPROVAL_DETAILS ORDAPPDET
WHERE
PROD. PRODUCT_ID = DSB. PRODUCT_ID
AND ORDAPPROV. ORDER_ID (+) IS DSB. ORDER_ID
--Also added the line below
AND ORDAPPROV. APPROVAL_DATE = (SELECT MAX (APPROVAL_DATE) OF ORDERS_APPROVAL WHERE THE ORDER_ID = ORDAPPROV. ORDER_ID)
AND ORDAPPDET. ORDER_ID (+) IS ORDAPPROV. ORDER_ID
AND ORDAPPDET. DATA_APPROVAL_DATE (+) IS ORDAPPROV. APPROVAL_DATE

But in this way, as I am specifying I want only records with approval equal to date at the latest for each order, I do not see the order without approval.

I tried again, with a left join like this:

SELECT
*
Of
ORD IN ORDERS,
PRODUCT PROD,
ORDERS_APPROVAL ORDAPPROV,
ORDERS_APPROVAL_DETAILS ORDAPPDET
WHERE
PROD. PRODUCT_ID = DSB. PRODUCT_ID
AND ORDAPPROV. ORDER_ID (+) IS DSB. ORDER_ID
--Also added the line below
AND ORDAPPROV. APPROVAL_DATE (+) = (SELECT MAX (APPROVAL_DATE) OF ORDERS_APPROVAL WHERE THE ORDER_ID = ORDAPPROV. ORDER_ID)
AND ORDAPPDET. ORDER_ID (+) IS ORDAPPROV. ORDER_ID
AND ORDAPPDET. DATA_APPROVAL_DATE (+) IS ORDAPPROV. APPROVAL_DATE

But I get a syntax error. Oracle said that it is not possible to do a join with a subquery.

If anyone knows how I can bring all this data?

Thanks in advance.

Published by: user9936895 on 05/10/2009 09:42: tried to fix the predetermined data schema.
Hello

Welcome to the forum!

A scalar, such as subquery
```
(SELECT MAX(APPROVAL_DATE) FROM ORDERS_APPROVAL WHERE ORDER_ID=ORDAPPROV.ORDER_ID)
```
is allowed in a WHERE clause, but not as a condition of outer join, as you discovered.

A workaround is the query expression so that it is not part of the outer join condition, which invlove in May (as in this case), adding another subquery. In the following query, the table of orders_approval in your original OF Division is replaced with online view, which uses the exact same scalar subquery in the WHERE clause. The online display will only contain one line per order_id (assuming that there is no link with for last approval_date).
```
SELECT
     *
FROM
     orders               ord,
     products          prod,
     (     -- Begin in-line view ORDAPPROV of last approval_date only
     SELECT     *       -- or list the columns needed in main query
     FROM     orders_approval         oa
     WHERE     approval_date = (
                    SELECT  MAX (approval_date)
                    FROM     orders_approval
                    WHERE     order_id     = oa.order_id
                    )
     )                ordapprov,
     orders_approval_details ordappdet
WHERE
     prod.product_id               = ord.product_id
AND     ordapprov.order_id (+)          = ord.order_id
AND     ordappdet.order_id (+)          = ordapprov.order_id
AND     ordappdet.approval_date (+)     = ordapprov.approval_date
;
```
Thank you for including CREATE TBAL statements; It is very useful.
You want to be even more useful in the future? Post INSERT statements for the sample data. That will make it easier for people to respond and easier for them to test their ideas.

Clarification on NULL or behavior LEFT JOIN behavior

Good day ladies------Gentlemen\ gurus-Experts-and Al:
Just when I thought I got my mind wrapped around the notion of NULL value, as defined by Oracle, I met what follows below. Basically, what you are watching is how our employees of the human resources tables are set up (for the most part). We have the employees, employee contracts table and the tables of positions. When I want to make a list of active staff, I always use the filter end date, you will see below in the Super request, essentially looking for staff who do not have a contract AND a position end date entered in the DB. It works like a charm. However, today, I noticed an official on the list, who has never had a position is entered in the comic book, and he had an 'open' contract In my example below, why would "Hal Jordan" appear on the active staff list? Yes, he spends the first part of my predicate (contract_end is null), but it does not work (at least by my understanding) past the second part of the predicate which is position_end has the value NULL because there not even a record is entered in the comics! Why would he appear? Is it because of the LEFT JOIN or a NULL rule type, I'm not aware of? Thanks for your help!
Aqua

EMPLOYEES AS

(

SELECT '10' AS emp_id, 'Banner' last_name, 'Robert' NAME FROM dual

UNION ALL

SELECT '20', 'Wayne', 'Bruce' OF THE double

UNION ALL

SELECT '30', 'Kent', 'Clark' FROM dual

UNION ALL

SELECT "40", "Parker", "Peter" OF THE double

UNION ALL

SELECT '50', 'Last', 'Tony' FROM dual

UNION ALL

SELECT '60', 'Jordan', 'Hal' OF THE double

),

emp_contracts AS

(

SELECT '10' AS emp_id, to_date (January 1, 2011 ',' MON-DD-YYYY "") LIKE contract_start, to_date (1 January 2012 ',' MON-DD-YYYY') AS contract_end FROM dual

UNION ALL

To_date '10', SELECT (January 1, 2010 ',' MON-DD-YYYY ""), to_date (December 31, 2011 ',' MON-DD-YYYY') OF double

UNION ALL

To_date '10', SELECT (January 2, 2012 ',' MON-DD-YYYY ""), double NULL

UNION ALL

To_date '20', SELECT (January 1, 2011 ',' MON-DD-YYYY ""), to_date (1 January 2012 ',' MON-DD-YYYY') OF double

UNION ALL

To_date '20', SELECT (January 1, 2010 ',' MON-DD-YYYY ""), to_date (December 31, 2011 ',' MON-DD-YYYY') OF double

UNION ALL

To_date '20', SELECT (January 2, 2012 ',' MON-DD-YYYY ""), double NULL

UNION ALL

To_date '30', SELECT (January 1, 2011 ',' MON-DD-YYYY ""), to_date (1 January 2012 ',' MON-DD-YYYY') OF double

UNION ALL

To_date '30', SELECT (January 1, 2010 ',' MON-DD-YYYY ""), to_date (December 31, 2011 ',' MON-DD-YYYY') OF double

UNION ALL

To_date '30', SELECT (January 2, 2012 ',' MON-DD-YYYY ""), double NULL

UNION ALL

To_date '40', SELECT (January 1, 2011 ',' MON-DD-YYYY'), to_date (1 January 2012 ',' MON-DD-YYYY') FROM dual

UNION ALL

To_date '40', SELECT (January 1, 2010 ',' MON-DD-YYYY'), to_date (December 31, 2011 ',' MON-DD-YYYY') FROM dual

UNION ALL

To_date '40', SELECT (January 2, 2012 ',' MON-DD-YYYY ""), double NULL

UNION ALL

To_date '50', SELECT (January 1, 2011 ',' MON-DD-YYYY ""), to_date (1 January 2012 ',' MON-DD-YYYY') OF double

UNION ALL

To_date '50', SELECT (January 1, 2010 ',' MON-DD-YYYY ""), to_date (December 31, 2011 ',' MON-DD-YYYY') OF double

UNION ALL

To_date '50', SELECT (January 2, 2012 ',' MON-DD-YYYY ""), double NULL

UNION ALL

To_date '60', SELECT (January 1, 2011 ',' MON-DD-YYYY ""), to_date (1 January 2012 ',' MON-DD-YYYY') OF double

UNION ALL

To_date '60', SELECT (January 1, 2010 ',' MON-DD-YYYY ""), to_date (December 31, 2011 ',' MON-DD-YYYY') OF double

UNION ALL

To_date '60', SELECT (January 2, 2012 ',' MON-DD-YYYY ""), double NULL

),

emp_positions AS

(

SELECT '10' AS emp_id, '43XY' AS title_id, to_date (January 1, 2011 ',' MON-DD-YYYY "") LIKE position_start, to_date (1 January 2012 ',' MON-DD-YYYY') AS position_end FROM dual

UNION ALL

SELECT ' 10', '47NT', to_date (January 1, 2010 ',' MON-DD-YYYY ""), to_date (December 31, 2011 ',' MON-DD-YYYY') OF double

UNION ALL

SELECT ' 10', '41JE', to_date (January 2, 2012 ',' MON-DD-YYYY ""), double NULL

UNION ALL

SELECT ' 20', '48AW', to_date (January 1, 2011 ',' MON-DD-YYYY ""), to_date (1 January 2012 ',' MON-DD-YYYY') OF double

UNION ALL

SELECT ' 20', '42KD', to_date (January 1, 2010 ',' MON-DD-YYYY ""), to_date (December 31, 2011 ',' MON-DD-YYYY') OF double

UNION ALL

SELECT ' 20', '46LD', to_date (January 2, 2012 ',' MON-DD-YYYY ""), double NULL

UNION ALL

SELECT ' 30 ', 45 MI', to_date (January 1, 2011 ',' MON-DD-YYYY'), to_date (1 January 2012 ',' MON-DD-YYYY') FROM dual

UNION ALL

SELECT ' 30', '44KH', to_date (January 1, 2010 ',' MON-DD-YYYY ""), to_date (December 31, 2011 ',' MON-DD-YYYY') OF double

UNION ALL

SELECT ' 30', '43LL', to_date (January 2, 2012 ',' MON-DD-YYYY ""), double NULL

UNION ALL

SELECT ' 40', '41', to_date (January 1, 2011 ',' MON-DD-YYYY ""), to_date (1 January 2012 ',' MON-DD-YYYY') OF double

UNION ALL

SELECT ' 40', '40', to_date (January 1, 2010 ',' MON-DD-YYYY ""), to_date (December 31, 2011 ',' MON-DD-YYYY') OF double

UNION ALL

SELECT ' 40', '42DX', to_date (January 2, 2012 ',' MON-DD-YYYY ""), double NULL

UNION ALL

SELECT ' 50', '48IB', to_date (January 1, 2011 ',' MON-DD-YYYY ""), to_date (1 January 2012 ',' MON-DD-YYYY') OF double

UNION ALL

SELECT '50 ', 47 DL', to_date (January 1, 2010 ',' MON-DD-YYYY'), to_date (December 31, 2011 ',' MON-DD-YYYY') FROM dual

UNION ALL

SELECT ' 50', '42A', to_date (January 2, 2012 ',' MON-DD-YYYY ""), double NULL

)

SELECT
1. ES.emp_id,
2. ES.last_name,
3. ES.first_name,
4. EP.title_id,
5. EP.position_start,
6. EP.position_end
Employees are

LEFT JOIN emp_contracts ec

ON ec.emp_id = es.first_name

LEFT JOIN emp_positions ep

ON ep.emp_id = es.emp_id

WHERE ec.contract_end IS NULL AND ep.position_end IS NULL

Hello

AquaNX4 wrote:

Good day ladies------Gentlemen\ gurus-Experts-and Al:

Just when I thought I got my mind wrapped around the notion of NULL value, as defined by Oracle, I met what follows below. Basically, what you are watching is how our employees of the human resources tables are set up (for the most part). We have the employees, employee contracts table and the tables of positions. When I want to make a list of active staff, I always use the filter end date, you will see below in the Super request, essentially looking for staff who do not have a contract AND a position end date entered in the DB. It works like a charm. However, today, I noticed an official on the list, who has never had a position is entered in the comic book, and he had an 'open' contract In my example below, why would "Hal Jordan" appear on the active staff list? Yes, he spends the first part of my predicate (contract_end is null), but it does not work (at least by my understanding) past the second part of the predicate which is position_end has the value NULL because there not even a record is entered in the comics! Why would he appear? Is it because of the LEFT JOIN or a NULL rule type, I'm not aware of? ...

It's the outer join.

When you say

Employees are

LEFT JOIN emp_positions ON ep.emp_id = es.emp_id ep

then, at the time when the WHERE clause is evaluated, the result set contains at least 1 row for each line of employees. If there is no line in emp_postitions that meet the join condition, then all the columns that should be provided by the emp_positions table will be NULL. This is precisely what concerns the outer join.

Think about it for a minute. NULL means the absence of any value. Is there is no corresponding row in the emp_positions table, then there is no value for emp_position.position_end. If so doesn't; "have a value, then, by definition, it is NULL.

It if were not NULL, then this would mean that it had a value. Would what value? Why the request would give him one value rather than another?

Thanks for the display of the data of the sample; It's always useful!

Left join between two tables using two different conditions
I have following three tables with their data, as shown below.

CREATE TABLE TIREMASTERPROCESS_TEMP
(
PRODUCTIONCODE TANK (12 BYTES),
FIELDNAME CHAR (12 BYTES),
DATACHR VARCHAR2 (60 BYTE),
REVISIONNO TANK (3 BYTES),
DATANUM NUMBER (9.4)
)
Whether the table c. and its sample data are like

FIELDNAME DATACHR REVISIONNO DATANUM PRODUCTIONCODE
AB No. Nch 1 100 0
AB No. Nch 1 108 0
AB No.-of-Nch 1 1 0
Ass42 teased dishes 1 0
Ass42 BTDrumNo1 BTD-051 1 0
AB53 BTDrumNo1 BTD-051 104 0

CREATE TABLE materialcode
(
UPPERMATERIALCODE CHAR (20),
PROCESSNO TANK (3),
PROCESSADOPTDATE TANK (9)

)
Whether the table b. and its sample data are like

UPPERMATERIALCODE PROCESSNO PROCESSADOPTDATE
Ass42 1 20120717
AB53 108 20121121
111 20111104 AS05
104 20120928 AS30

CREATE TABLE BUILDINGSCHEDULEMASTER
(
BUILDINGSIZE TANK (5 BYTES),
GTCODE FLOAT (4 BYTES),
TIREPERCART NUMBER (3.0).
BUILDINGLOT NUMBER (3.0)
)
Whether table and its sample data are like

BUILDINGSIZE GTCODE TIREPERCART BUILDINGLOT
AB42A 4 12 ass42
AB53A 4 88 AB53
AS30A AS30 4 80
BF03A 1 90 BF03

Now, I need to get some data in these fields by using the suite of mappings.

« PR_ » || Trim (a.BUILDINGSIZE) | ' / MPL2' Processid,--PRIMARY KEY
TO_DATE (substr (NVL(b.PROCESSADOPTDATE,'19800101'), 7, 2) |) » /'|| SUBSTR (NVL(b.PROCESSADOPTDATE,'19800101'), 5, 2) | » /'|| SUBSTR (NVL(b.PROCESSADOPTDATE,'19800101'), 1, 4). (' 01:00:00 ',' dd-mm-yyyy hh24:mi:ss') starteff, to_date (SUBSTR (NVL(b.PROCESSADOPTDATE,'19800101'), 7, 2) |) » /'|| SUBSTR (NVL(b.PROCESSADOPTDATE,'19800101'), 5, 2) | » /'|| SUBSTR (NVL(b.PROCESSADOPTDATE,'19800101'), 1, 4). (' 01:00:00 ',' dd-mm-yyyy hh24:mi:ss') startDate.
b.PROCESSNO revisioncodeid,
a.BUILDINGLOT tirepercart ,
CASE WHEN c.FIELDNAME = 'BTDrumNo1' then c.DATACHR end drumtype1.
BOX WHEN (trim (C.DATACHR) = '1' and trim (C.FIELDNAME) = "No. Nch") and THEN click 'YES '.
ANOTHER 'NO '.
END may-BUG,
case
When c.FIELDNAME = 'Wavy'
AND c.DATACHR = 'Use' THEN on 'YES '.
When c.FIELDNAME = 'Wavy'
AND c.DATACHR <>'Use' THEN 'NO '.
fine wavy

Now for the tables A and B I have the simple join as condition

a.GTCODE = b.UPPERMATERIALCODE

But I have to use two different left join conditions to join the table B and C to calculate the RESP fields according to the condition.
Now, I have to use

(trim (b.UPPERMATERIALCODE)). » -'|| Trim (b.PROCESSNO) = Trim (c.PRODUCTIONCODE) | » -'|| Trim (c.REVISIONNO)

condition to get the data for the WAVY and DRUMTYPE1 fields.

But at the same time, I have to use

substr (Trim (b.UPPERMATERIALCODE), 1, 2). » -'|| Trim (b.PROCESSNO) = Trim (c.PRODUCTIONCODE) | » -'|| Trim (c.REVISIONNO)

conition to derive the CHAFER field.

And for this reason I am come so many duplicates and do not correct results for JUNEBUG, WAVY, DRUMTYPE1, and STARTDATE field.

I need some advice as how can I do so that I get the correct results without duplicates for the PRIMARY KEY.

Thank you

Mahesh
It would have been easier to answer if you gave us your example query that gives incorrect results - which both show us what you are doing and give us a starting point.
Insert instructions for data, rather than only the data would have helped too, making it more quick to test this point.
You do not show what you have done with your two outer join criteria, but I think you need to list TIREMASTERPROCESS_TEMP in your query twice, with alias names. Here's what I did:
```
select a.BUILDINGSIZE, a.GTCODE, b.PROCESSNO ,  c1.FIELDNAME, c1.DATACHR, C2.FIELDNAME, C2.DATACHR
, CASE WHEN c1.FIELDNAME='BTDrumNo1' then c1.DATACHR end drumtype1
, CASE WHEN (trim(c2.DATACHR) = '1' and trim(c2.FIELDNAME) = 'No-of-Nch') THEN 'YES' ELSE 'NO' END CHAFER
, case when c1.FIELDNAME='Wavy' AND c1.DATACHR='Use' THEN 'YES'
       when c1.FIELDNAME='Wavy' then 'NO' else null end wavy
from BUILDINGSCHEDULEMASTER        A
join materialcode b on a.GTCODE=b.UPPERMATERIALCODE
left outer join TIREMASTERPROCESS_TEMP c1
   ON trim(b.UPPERMATERIALCODE)||'-'||trim(b.PROCESSNO) = trim(c1.PRODUCTIONCODE)||'-'||trim(c1.REVISIONNO)
left outer join TIREMASTERPROCESS_TEMP c2
   ON substr(trim(b.UPPERMATERIALCODE),1,2)||'-'||trim(b.PROCESSNO) = trim(c2.PRODUCTIONCODE)||'-'||trim(c2.REVISIONNO)
```
C1 is an alias for the TIREMASTERPROCESS_TEMP line which is necessary for drumtype1 and wavy, c2 is an alias for the TIREMASTERPROCESS_TEMP line required for JuneBug. There was some minor errors in your calculations of field I tried to correct.

The results are:
```
BUILD GTCO PRO FIELDNAME    DATACHR    FIELDNAME    DATACHR    DRUMTYPE1  CHA WAV
----- ---- --- ------------ ---------- ------------ ---------- ---------- --- ---
AB53A AB53 108                         No-of-Nch    1                     YES
AB42A AB42 1   BTDrumNo1    BTD-051    No-of-Nch    1          BTD-051    YES
AB42A AB42 1   Wavy         NotUse     No-of-Nch    1                     YES NO
AS30A AS30 104                                                            NO
```
Hope this helps,
David

strange result of Left Join 11 GR 2.

It is a strange result of Left Join
Why the result is 0 record?

select * from v$version;

BANNER
-------------------------------------------------------
Oracle Database 11g Release 11.2.0.1.0 - Production
PL/SQL Release 11.2.0.1.0 - Production
CORE    11.2.0.1.0      Production
TNS for 32-bit Windows: Version 11.2.0.1.0 - Production
NLSRTL Version 11.2.0.1.0 - Production

Select * From
(Select 1 aaa From DUAL) A
LEFT JOIN
(Select 2 bbb From DUAL Where '1' IN ('2','3')) B
ON A.aaa = B.bbb;

no rows selected

Old Left Join syntax does not work, too :-(

Select * From
(Select 1 aaa From DUAL) A,
(Select 2 bbb From DUAL Where '1' IN ('2','3')) B
where A.aaa = B.bbb(+);

no rows selected

Aketi Jyuuzou wrote:
It is a strange result of Left Join
Why the result is 0 record?

I guess that the rewrite of the query with the optimizer is the origin of the problem.
Say the 10053 trace? I don't have access to the database 11 GR 2 now to test.
You can see if the advice of line NO_REWRITE or NO_QUERY_TRANSFORMATION gives the desired result.

LEFT JOIN question

Hello

Here's 2 queries. First one help for the joints and the second query uses a join ancient. The first works very well and I tried to write the 2nd one to work exactly like the first. I don't know where to put the sub condition sysdate in 2nd query such that there operator.

  AND trunc(SYSDATE) BETWEEN hapf.effective_start_date(+) AND
       hapf.effective_end_date(+)

SELECT papf.full_name,
       hapf.name position_name
  FROM per_people_x       papf,
       per_assignments_x  pax,
       hr_all_positions_f hapf
 WHERE papf.person_id = pax.person_id
       AND pax.position_id = hapf.position_id(+)
       AND trunc(SYSDATE) BETWEEN hapf.effective_start_date(+) AND
       hapf.effective_end_date(+)

SELECT papf.full_name,
       hapf.name position_name
  FROM per_people_x      papf,
       per_assignments_x pax
  LEFT JOIN hr_all_positions_f hapf
    ON (pax.position_id = hapf.position_id)
 WHERE papf.person_id = pax.person_id

Any suggestion is appreciated.

Thank you

SELECT papf.full_name,

hapf. Name position_name

THE women's wear per_people_x

JOIN THE

Pax per_assignments_x

ON)

PAPF.person_id = pax.person_id

)

LEFT JOIN

hr_all_positions_f hapf

ON)

Pax.POSITION_ID = hapf.position_id

AND

trunc (sysdate) BETWEEN hapf.effective_start_date AND hapf.effective_end_date

)

SY.

LEFT JOIN and performance

Hi guys,.
I inherited a previous devloper the query below. T_MAXVALUES has 100,000 rows and T_STA_ERG about 1 m.
The performance is so bad, it works for 5 hours now and I have nothing so I can´t say much about the data of test or how it should look.
It works on Oracle 11 g and I can´t get my head around all JOIN clauses and the ultimate goal but sense that there could be a better way
to achieve what is tried below. All of you guru´s able to immediately spot the big failures?
SELECT DISTINCT T1. PARAMETER, T1. ZERL_MATRIX, T1. MONTHS, T1. ADDITIONAL_CRI,
DECODE (H2. MRL, NULL, (DECODE (H1. MRL, NULL, (DECODE (H3. MRL, NULL, (DECODE (H4. MRL, NULL, NULL, 'R')), 'R')), M1. MRL)), H2. MRL)
OF T_STA_ERG T1
LEFT JOIN (SELECT PARAMETER, ZERL_MATRIX_2, MRL
OF T_MAXVALUES, WHERE ZERL_MATRIX_1 IS NULL) H1
ON T1. PARAMETER = H1. PARAMETER
AND substr (T1. ZERL_MATRIX, 4, 3) = H1. ZERL_MATRIX_2
LEFT JOIN (SELECT PARAMETER, ZERL_MATRIX_1, ZERL_MATRIX_2, MRL
OF T_MAXVALUES
WHERE ZERL_MATRIX_1 IS NOT NULL) H2
ON T1. PARAMETER = H2. PARAMETER
AND substr (T1. ZERL_MATRIX, 1, 3) = H2. ZERL_MATRIX_1
AND substr (T1. ZERL_MATRIX, 4, 3) = H2. ZERL_MATRIX_2
LEFT JOIN (SELECT PARAMETER, ZERL_MATRIX_2, MRL
OF T_MAXVALUES
WHERE ZERL_MATRIX_1 IS NULL) H3
ON T1. PARAMETER = H3. PARAMETER
LEFT JOIN T_MAXVALUES H4
ON substr (T1. ZERL_MATRIX, 1, 3) = H4. ZERL_MATRIX_1

The idea is to get maxvalues lines that at least match the lines of t. The game minimum is the game of columns of the parameter (type 3), or matches the matrix 1 (type 4).

If you get all possible matches, and you will then take the MRLS of the best match: better if the parameter, matrix1 and matrix2 all game, then if parameter and matrix2 match, etc.

What I have not included here are a test for null matrix1. If a match where parameter and matrix2 match, but there's a matrix1 value that does not match the value in T matrix1, will have to be thrown out, then just add this additional condition in the CASE statement.

Untested of course:

Select T1. PARAMETER, T1. ZERL_MATRIX, T1. MONTHS, T1. ADDITIONAL_CRI, Max (MRL) keep dense_rank of first order by type)

Of

(SELECT T1. PARAMETER, T1. ZERL_MATRIX, T1. MONTHS, T1. ADDITIONAL_CRI,

-case when T1. PARAMETER = H.PARAMETER and substr (T1. ZERL_MATRIX, 1, 3) = H2. ZERL_MATRIX_1 AND substr (T1. ZERL_MATRIX, 4, 3) = H2. ZERL_MATRIX_2 then 1

When T1. PARAMETER = H.PARAMETER and substr (T1. ZERL_MATRIX, 4, 3) = H1. ZERL_MATRIX_2 then 2

When T1. PARAMETER = H.PARAMETER then 3

When substr (T1. ZERL_MATRIX, 1, 3) = H.ZERL_MATRIX_1 then 4

end match_type, h.mrl

OF T_STA_ERG T1

LEFT JOIN T_MAXVALUES h on (T1. PARAMETER = H.PARAMETER or substr (T1. (ZERL_MATRIX, 1, 3) = H.ZERL_MATRIX_1)

)

Group T1. PARAMETER, T1. ZERL_MATRIX, T1. MONTHS, T1. ADDITIONAL_CRI;

LEFT JOIN increases the number of lines

Hi guys,.
I had a problem, my left join retrieves multiple values. I know he has only 252 in there that correspond to the place where
condition. If I use the table in a left join with the same condition where my row count increases.
-1176 lines
Select count (erg_ID) of
MySchema. T_STA_ERG sta_erg
INNER JOIN T_MEN hoechst
ON sta_erg. PARAMETER = hoechst. PARAMETER
AND sta_erg. JAHR = 2014
where sta_erg. MESSERG_KNG = 'A' AND sta_erg. MESSERG_ALPHA IN ('03 ") and sta_erg. NORM_MESS is null
-252 lines
Select distinct erg_ID myschema. T_STA_ERG sta_erg where sta_erg. MESSERG_KNG = 'A' AND sta_erg. MESSERG_ALPHA IN ('03 ") and sta_erg. NORM_MESS is null
any clue´s how I can build in conditions in my join which would not increase the results of the line?

Why not just an inner join then?

Double left join creates a unwanted loop...

I have therefore two paintings, I need to extract the counts of "tickets".

I want to have the date given match then I use a 'connect by level' so that the same dates without data will have records in the result set.

There are two tables I want to join on this "timeline" when I join each of them that individually, it works but when I join together that there is an order of operations issue I'm not sure how to move.

ORIGINAL DATA:

TABLE SMINCREQ:

OPEN_DATE

NUMBER

JANUARY 12, 2015

IM392039

JANUARY 12, 2015

IM399495

JANUARY 12, 2015

RM394950

JANUARY 13, 2015

IM394958

JANUARY 13, 2015

RM394958

TABLE SMINTERACTIONS:

OPEN_DATE

INCIDENT_ID

JANUARY 12, 2015

SD394858

JANUARY 12, 2015

SD399495

JANUARY 12, 2015

SD394950

JANUARY 13, 2015

SD394958

JANUARY 13, 2015

SD394958

THE QUERY:

SELECT to_char(DAYS_,'DD-MON-YYYY'),
      
      sum(decode(INSTR(SMINCREQ."NUMBER",'IM'),'1','1',0)) "INCIDENT",
      sum(decode(INSTR(SMINCREQ."NUMBER",'RM'),'1','1',0)) "REQUEST"
     --sum(decode(INSTR(SMINTERACTIONS.INCIDENT_ID,'SD'),'1','1',0)) "INTERACTION"  
      FROM
  ( SELECT (TRUNC(to_date(SYSDATE-ROWNUM),'DD')) DAYS_ FROM DUAL
CONNECT BY LEVEL <= (SELECT 14 FROM DUAL)
  ) THE_TIMELINE
    LEFT OUTER JOIN SMINCREQ ON  (to_char(DAYS_,'DD-MON-YYYY')=to_char(SMINCREQ.OPEN_TIME,'DD-MON-YYYY')  and (OPEN_GROUP like '%HELP%'))
    --LEFT OUTER JOIN SMINTERACTIONS on (to_char(DAYS_,'DD-MON-YYYY')=to_char(SMINTERACTIONS.OPEN_TIME,'DD-MON-YYYY')  and PRIMARY_ASSIGNMENT_GROUP like '%HELP%')
    GROUP BY to_char(DAYS_,'DD-MON-YYYY') ORDER BY to_char(DAYS_,'DD-MON-YYYY')
  ;

When I run the present and just get the number of SMINCREQ is

DATE	INCIDENTS	REQUEST
JANUARY 12, 2015	103	4
JANUARY 13, 2015	59	10

When I run the query for SMINTERACTIONS I get

DATE	INTERACTION
JANUARY 12, 2015	55
JANUARY 13, 2015	50

When I try to run the two left joins them together I get:

DATE	INCIDENTS	APPLICATIONS	INTERACTIONS
JANUARY 12, 2015	5665	220	5885
JANUARY 13, 2015	2950	500	3450

I know that what is happening is a loop where the date is is developed in a relationship 1 to many through the joints and then the GROUP is not the case until the end.

What I want to achieve is:

DATE	INCIDENTS	REQIEST	INTERACTION
JANUARY 12, 2015	103	4	55
JANUARY 13, 2015	59	10	50

Thanks for the tips

I decided to go this route that will just join the new data (INTERACTIONS) of INCIDENTS already implemented and APPLICATIONS:

SELECT NULL LINK,DAYS,INCIDENT,"REQUEST",sum(decode(INSTR(SMINTERACTIONS.INCIDENT_ID,'SD'),'1','1',0)) "INTERACTION" from(

SELECT to_char(DAYS_,'DD-MON-YYYY') DAYS,sum(decode(INSTR(SMINCREQ."NUMBER",'IM'),'1','1',0)) "INCIDENT",
      sum(decode(INSTR(SMINCREQ."NUMBER",'RM'),'1','1',0)) "REQUEST"
      FROM
  ( SELECT (TRUNC(to_date(SYSDATE-ROWNUM),'DD')) DAYS_ FROM DUAL
 CONNECT BY LEVEL <= (SELECT 14 FROM DUAL)
  ) THE_TIMELINE
    LEFT OUTER JOIN SMINCREQ ON  (to_char(DAYS_,'DD-MON-YYYY')=to_char(SMINCREQ.OPEN_TIME,'DD-MON-YYYY')  and (OPEN_GROUP like '%HELP CENTER%')
)

    GROUP BY to_char(DAYS_,'DD-MON-YYYY') ORDER BY to_char(DAYS_,'DD-MON-YYYY')
) LEFT JOIN SMINTERACTIONS on (DAYS=to_char(OPEN_TIME,'DD-MON-YYYY') and (PRIMARY_ASSIGNMENT_GROUP like '%HELP CENTER%'))
GROUP BY DAYS,INCIDENT,"REQUEST" order by DAYS ASC;

Thanks for all the entries...

Left join

Hello world
Im trying to create the query that displays the values that are not available in the other table.
Scenario:
I have two tables, the material and materialfolder. I want to display documents that are not available in materialfolder.
Here's my query
```
SELECT m.material_id
    ,  m.MATERIAL_TYPE_ID
    ,  m.name
    ,  m.created
        FROM material m
        LEFT  JOIN materialfolder mf ON m.material_id = mf.material_id
        where to_char(m.CREATED, 'yyyy') >= ('2011')
        and to_char(m.CREATED, 'yyyy') <= ('2013');
```
The result does not show the correct values. Don't know what my error here...
Hoping that someone could help me.
Thank you.
Kind regards
Ed

Hello

If you just want to know the values that are not available in materialfolder, use a NOT EXISTS condition:

SELECT m.material_id

m.MATERIAL_TYPE_ID

$m.name

m.created

MATERIAL m

If NOT EXISTS (select null from materialfolder mf

where m.material_id = mf.material_id

)

AND m.CREATED > = TO_DATE('01/01/2011', 'dd/mm/yyyy') AND m.CREATED< to_date('01/01/2014',="">

LEFT JOIN DUPLICATION PROBLEM

Hello
I'm having a problem with the left join query, when I join table a two table based on column task1 I get duplicate in table1.task1, table1.price.
Table1. Task1 Table1. Price table2. Task1 table2. Resource table2. Price
001 100 001 A 50
001 100 001 B 250
How can I make a request to get a result as below.
Table1. Task1 Table1. Price table2.Task2 table2. Resource table2. Price
001 100 001 A 50
001 B 250
Thank you.

Note that your query uses an inner join. Your original question mentioned a join left, generally interpreted as meaning a left OUTER join.

Anyway, according to Frank, you can use the BREAK command in SQL * Plus for the goal sought through formatting. You can also use an analytical function as Roger suggests. I think ROW_NUMBER() might do the trick, but we must be clear about the criteria for partitioning and ordering the results, for example
```
WITH table1 AS (
  SELECT '001' AS task1
       , 100 AS price
  FROM   dual
), table2 AS (
  SELECT '001' AS task1
       , 'A' AS resources
       , 50 AS price
  FROM   dual
  UNION ALL
  SELECT '001' AS task1
       , 'B' AS resources
       , 250 AS price
  FROM   dual
)
SELECT DECODE(ROW_NUMBER() OVER (PARTITION BY t1.task1, t1.price ORDER BY t2.resources, t2.price),1,t1.task1) AS task1_alt
     , DECODE(ROW_NUMBER() OVER (PARTITION BY t1.task1, t1.price ORDER BY t2.resources, t2.price),1,t1.price) AS price_alt
     , t2.task1 AS task_with_resource
     , t2.resources
     , t2.price
FROM   table1 t1
INNER JOIN table2 t2
ON     t1.task1 = t2.task1
ORDER BY t1.task1, t1.price, t2.resources, t2.price;
```

How to avoid the union and use a left join

Hello

I have the following tables

{code}

create the table mainTable

(col1 varchar2 (2) varchar2 (2) col2, col3 varchar2 (2), col4 varchar2 (2));

create table secTable

(col1 varchar2 (2));

create the table secTable1

(col2 varchar2 (2));

create the table secTable2

(col3 varchar2 (2));

Insert in maintable

values ('a', 'b', 'this,' would be ');

Insert in maintable

values (', 'o', 'n', 'p');

insert into secTable

values ('a');

insert into secTable1

values ('b');

insert into secTable2

values ('c');

commit;

{code}

I made a request, drank, I would use join without clause union how can I change to receive the same result as the following query?

{code}

	Select t1.*, 'bad value' \| T1.Col1
	from maintable t1
	T1.Col1 left join t2 = t2.col1 sectable
	where t2.col1 is null
	Union of all the
	Select t1.*, 'bad value' \| T1.col2
	from maintable t1
	Join t2 left on t1.col1 = t2.col2 sectable1
	where t2.col2 is null
	Union of all the
	Select t1.*, 'bad value' \| T1. COL3
	from maintable t1
	Join t2 left on t1.col1 = t2.col3 sectable2
	where t2.col3 is null

{code}

Thank you

Coco

Like this?:

SQL > SELECT col1, col2, col3, col4, xvalue

2 from (SELECT m0.*

3, NVL (t0.col1, 'bad value t0' | m0.col1) t0_col1

4, NVL (t1.col2, 'bad value t1' | m0.col2) t0_col2

5, NVL (t2.col3, 'bad value t2' | m0.col3) t0_col3

Maintable m0 6

LEFT OUTER JOIN sectable t0 7

8. WE (m0.col1 = t0.col1

9 AND t0.col1 IS NULL)

10 LEFT OUTER JOIN sectable1 t1

11. WE (m0.col1 t1.col2 =

12 AND t1.col2 IS NULL)

13 LEFT OUTER JOIN t2 sectable2

14. WE (m0.col1 = t2.col3

15 t2.col3 AND IS NULL))

16 UNPIVOT INCLUDES NULL values (xvalue wrongly IN (t0_col1, t0_col2, t0_col3))

17 ORDER BY xvalue

18.

COL1 COL2 COL3 COL4 XVALUE

------ ------ ------ ------ ---------------------------------------------------

a b c d bad value t0 a

m o n p bad value m t0

a b c d bad value t1 b

m o n p o t1 value of evil

a b c d bad value t2 c

m o n p value t2 n bad

6 selected lines.

Interesting behavior of left join

We will create 3 tables as follows:

CREATE TABLE "A1" ()"A1_ID" NUMBER ENABLE NON NULL,CONSTRAINT "A1_PK" SELECT the PRIMARY KEY ('A1_ID') );
CREATE TABLE "A2" ()"A2_ID" NUMBER ENABLE NON NULL,CONSTRAINT "A2_PK" SELECT the PRIMARY KEY ('A2_ID'));
CREATE TABLE "A12" ()'A12_ID' ENABLE NUMBER NOT NULL,'A1_ID' ENABLE NUMBER NOT NULL,'A2_ID' ENABLE NUMBER NOT NULL,"A12_PK" PRIMARY KEY ('A12_ID'), CONSTRAINTREFERENCES of FOREIGN ("A1_ID") of CONSTRAINT "A12_A1_FK1" "BUTUNLESIK" KEY "" A1 "("A1_ID") ENABLE,KEY REFERENCES FOREIGN ("A2_ID") of CONSTRAINT 'A12_A2_FK1' 'BUTUNLESIK '. ("" A2 "("A2_ID") ALLOW);
We insert the values as follows:
Insert into A1 values (1);
Insert into A1 values (2);
Insert into A1 values (3);
Insert 4 A1;
Insert into A1 values (5);
Insert into A1 values (6);
Insert into A2 values (1);
insert into values A12 (1,1,1);
Tables a1 and A2 are just simple tables with primary keys and A12 table contains many-to-many relationship between them.
When I run the query below,
SELECT * A1 A1 A12 A12 LEFT JOIN ON a1.a1_id = a12.a1_id A2 LEFT JOIN A2 ON a2.a2_id = a12.a2_id WHERE a2.a2_id IS NULL;
I get the following results, as I predicted:
A1_ID A12_ID A1_ID A2_ID A2_ID
---------- ---------- ---------- ---------- ----------
6
5
4
3
2
However when I run the second query below (where I select only the a1 id column instead of "*")
SELECT a1.a1_id A1 A1 A12 A12 LEFT JOIN ON a1.a1_id = a12.a1_id A2 LEFT JOIN A2 ON a2.a2_id = a12.a2_id WHERE a2.a2_id IS NULL;

I get nothing, no lines have been selected. When I look at the plan of the second query I see a predicate to filter such as "'NULL IS NOT NULL". " I guess that this does not return results. Is this a bug, or y at - it a satisfactory explanation for this behavior?

Step 1 - check the execution plans.

At first glance, this looks like a variant of https://forums.oracle.com/thread/2594321

Concerning

Jonathan Lewis

Left join of the two tables and multiple values into a single value separated by commas

Hello
I have following tables with their structures and their data as below.
CREATE TABLE 'BETODI '. "" BETINFO ".
(
VARCHAR2 (8 BYTE) "CURRENTPRESS."
ENABLE 'TYPEIDCONTAINER' VARCHAR2 (30 BYTE) NOT NULL
)
INSERT INTO Betinfo (Currentpress, typeidcontainer) VALUES ('A24G', 'PMC');
INSERT INTO Betinfo (Currentpress, typeidcontainer) VALUES ('A24D', 'Pensky-MARTENS');
INSERT INTO Betinfo (Currentpress, typeidcontainer) VALUES ("A25D", "CMP");
INSERT INTO Betinfo (Currentpress, typeidcontainer) VALUES ('A25G', 'PMC');
INSERT INTO Betinfo (Currentpress, typeidcontainer) VALUES ('A26D', 'PMC');
INSERT INTO Betinfo (Currentpress, typeidcontainer) VALUES ('A26G', 'PMC');
INSERT INTO Betinfo (Currentpress, typeidcontainer) VALUES ("A32G", "V-BFC3");
INSERT INTO Betinfo (Currentpress, typeidcontainer) VALUES ('A32D', "V-BFC2");
CREATE TABLE 'BETODI '. "" BETMASTER ".
(
ACTIVATE THE "CUREPRESS" TANK (5 BYTES) NOT NULL,
ACTIVATE THE "TYPE" VARCHAR2 (5 BYTE) NOT NULL,
NUMBER (5.0) "LASTPCIRIM".
)
INSERT INTO BetMaster (Curepress, type, lastpcirim) VALUES ('A24', '45 M 8', 15);
INSERT INTO BetMaster (Curepress, type, lastpcirim) VALUES ('A25', 42 16', 15);
INSERT INTO BetMaster (Curepress, type, lastpcirim) VALUES ("A26", 16' 45, 15);
INSERT INTO BetMaster (Curepress, type, lastpcirim) VALUES ("A27", '45 M 34', 16);
INSERT INTO BetMaster (Curepress, type, lastpcirim) VALUES ('A28', '45 M 34', 16);
INSERT INTO BetMaster (Curepress, type, lastpcirim) VALUES ('A29', '45 M 34', 16);
INSERT INTO BetMaster (Curepress, type, lastpcirim) VALUES ('A30', '45MCH', 15);
INSERT INTO BetMaster (Curepress, type, lastpcirim) VALUES ("A31", "45MCH", 16);
INSERT INTO BetMaster (Curepress, type, lastpcirim) VALUES ('A32', '45MCH', 16);
INSERT INTO BetMaster (Curepress, type, lastpcirim) VALUES ('A33', '45MCH', 16);
INSERT INTO BetMaster (Curepress, type, lastpcirim) VALUES ("A34", "45MCH", 16);
These two tables have left join as
BETMASTER. CUREPRESS = substr (BETINFO. CURRENTPRESS, 1, 3)
now I want to have the data in the two tables with fields Curepress, Lastpcirim, typeidcontainer.
Also something like
Make a group of typeidcontainer if this value is greater than 1 by press separated the values of semicolon (;)
So, for example above, we should be given as
A24 PMC 15; PENSKY-MARTENS
A25 15 PMC
A26 15 PMC
A27 16 (NULL)
A28 16 (NULL)
A30 15 (NULL)
A31 16 (NULL)
A32 16 BFC2-V; V BFC3
A33 16 (NULL)
A34 16 (NULL)
How could do?
My current request is as
Select distinct Curepress, lastpcirim, typeidcontainer
BETMASTER STD left join INF BETINFO
on the trim (STD. CUREPRESS) = substr (trim (INF. CURRENTPRESS), 1, 3)
but I am unable to get the values separated by commas.
Any help would be appreciated.
Thank you
Mahesh.

Hi, Mahesh,

If you want to only 1 row of output for each distinct combination of currentpress and lastpcirim? This sounds like a job for GROUP BY.

And you want the row to contain a list of all different typidcontainers-delimited? This sounds like a job for the aggregate LISTAGG function.

WITH joined_data AS

(

SELECT DISTINCT

MST.curepress, mst.lastpcirim, inf.typeidcontainer

OF betmaster STD

LEFT JOIN betinfo ON TRIM (mst.curepress) inf = SUBSTR (TRIM (inf.currentpress)

1

3

)

)

SELECT curepress, lastpcirim

LISTAGG (typeidcontainer, ',')

THE Group (ORDER BY typeidcontainer) AS container_list

OF joined_data

Curepress GROUP, lastpcirim

;

Unfortunately, you can't say LISTAGG (DISTINCT ...), so you should always get the separate containers how you already are. (Note that the subquery is just what you posted).

Thanks for posting the CREATE TABLE and INSERT statements; It is very useful. Don't forget to tell what version of Oracle you are using. LISTAGG was new in Oracle 11.2.

Why not add CHECK constraints (and perhaps triggers) to your tables, so that curepress and currentpress are not stored with the head or trailing spaces? Then you wouldn't need to use the PAD in queries like this, and your code would be simpler and more effective.

ORA-01417: a table can be external joined as another table
Hi, I use Oracle 8i and could not use LEFT JOIN. So I need to use (+) instead.
But I encounter ORA-01417 for = G.COL5 of I.COL3 (+)

Complete the order as follows:
SELECT *.
B, A, C, D, J, K, L, E, F, G, H, I
WHERE B.COL1 = 'ABC'
AND B.COL1 = A.COL1 AND B.COL2 = A.COL2 AND B.COL3 = A.COL3
AND C.COL1 = B.COL1 AND C.COL2 = B.COL6 AND C.COL3 = B.COL7
AND B.COL1 = D.COL1 (+) AND D.COL2 (+) = B.COL6
AND A.COL1 = J.COL1 (+) AND A.COL2 = J.COL2 (+)
AND B.COL1 = K.COL1 (+) AND (+)-K.COL2 AND B.COL11 = B.COL6 = K.COL3 (+) AND B.COL12 = K.COL4 (+)
AND A.COL1 = L.COL1 (+) AND L.COL2 (+) = A.COL2 AND A.COL3 = L.COL3 (+)
AND E.COL1 = 'ABC' AND E.COL2 (+) (+) = C.COL20 AND E.COL3 (+) = C.COL21
AND F.COL1 (+) = 'ABC' AND F.COL2 (+) = C.COL20
AND G.COL1 = 'ABC' AND G.COL2 (+) (+) = B.COL11 AND G.COL3 (+) = B.COL12
AND H.COL1 (+) = 'ABC' AND H.COL2 (+) = "PINCH" AND H.COL3 (+) = G.COL5
AND I.COL1 (+) = 'ABC' AND I.COL2 (+) = "PINCH" AND I.COL3 (+) = G.COL5* AND = A.COL5 I.COL4 (+) AND I.COL5 (+) = "0001"

Please notify.
Thanks in advance.
Hello

981637 wrote:
... How to re-write the script according to your suggestion?

Maybe something like:
```
SELECT  *
FROM      (     -- Begin in-line view abc
          SELECT     b.col4      AS b_col4
          ,     c.col4      AS c_col4
     --     ,     ...      -- Whatever columns you want to display in the main query
          FROM     a
          ,      b
          ,      c
          WHERE      b.col1          = a.col1
          AND     b.col2          = a.col2
          AND     b.col3          = a.col3
          AND     c.col1 (+)      = 'ABC'
          AND     c.col2 (+)      = a.col4
          AND     c.col3 (+)      = a.col5
     ) abc     -- End in-line view
,     d
WHERE     d.col1 (+)     = 'ABC'
AND     d.col2 (+)      = 'LOC'
AND     d.col3 (+)      = abc.c_col4
AND     d.col4 (+)      = abc.b_col4
;
```
I can't say with certainty without examples of data (CREATE TABLE and INSERT statements) and the results desired from these data.

In your real problem, the other tables can be joined to the a, b and c of the subquery (I assume it will be the most convenient way to do so), or they can be reached at abc in the main query.

Table1. Task1	Table1. Price	table2. Task1	table2. Resource	table2. Price
001	100	001	A	50
001	100	001	B	250

Table1. Task1	Table1. Price	table2.Task2	table2. Resource	table2. Price
001	100	001	A	50
		001	B	250

Left join to another database

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