Performance of outer join problem

Similar Questions

• Outer join problem

  Hi, I have a problem with my query:

  SELECT t1.step, t2.name FROM RIGHT JOIN t1 t2 ON t2.step = t1.step

  I have two tables, small t1 and t2 great.

  table T1 (7 lines):

  name of the step

  1 a

  2B

  3 C

  4 D

  5 e

  $4

  7 g

  table T2 (10000 lines);

  name of the step ID

  100 1A

  101 2B

  102 3 c

  103 4 D

  104 5th

  105 1A

  106 2 b

  107 3 c

  108 d 4

  109 5 e

  110 1A

  111 2B

  112 3 c

  113 4 D

  114 5 e

  115 1A

  116 2B

  117 c 3

  118 d 4

  119 5th

  … … ..

  I want external right to join them, and have values in t2.name NULL and the range of steps (1-7).

  My query returns this:

  name of the step

  1 a

  2B

  3 C

  4 D

  5 e

  1 a

  2B

  3 C

  4 D

  5 e

  1 a

  2B

  3 C

  4 D

  5 e

  ....

  Thank you.

  So there is indeed a key score in T2, it is "ROW_NR", and we can do this:

  select t1.col_nr
      , t2.row_nr
      , t1.sheet_name
      , t1.cell
      , t1.column_name
      , t2.string_val
  from t1
      left outer join t2 partition by (t2.row_nr)
                    on t2.col_nr = t1.col_nr
  ;
  

• Outer join problem - revisited

  Hello
  I'm starting a new thread since my previous post was an inaccurate representation of the problem I have.
  
  I have data that looks like this.
  
  create table cour_off (offNum number, varchar2 (10) courseId, start_date date);
  create table activity (number oid, courseId varchar2 (10));
  create table ncr_course (course_oid number, incept_date date, expiry_date date);
  
  insert into cour_off values (1, 'MAT101', to_date (' 15 / 05/2012 ', ' DD/MM/YYYY'));
  Insert in activity values (10, 'MAT101');
  insert into ncr_course values (10, to_date (' 01 / 05/2012 ', ' DD/MM/YYYY'), to_date (' 10 / 05/2012 ', ' DD/MM/YYYY'));
  
  When I write the query using ANSI notation, the query works fine. 1 form is returned with a NULL value for the incept_date column.
  
  Select activity.courseId, ncr_course.incept_date
  of cour_off
  Join the activity on cour_off.courseId = activity.courseId
  activity.Oid left join ncr_course = ncr_course.course_oid
  and cour_off.start_date between ncr_course.incept_date
  and ncr_course.expiry_date
  where cour_off.offNum = 1
  
  However, when the style non ANSI query as shown below, no records are returned.
  
  Select activity.courseId, ncr_course.incept_date
  activity, cour_off, ncr_course
  where cour_off.offNum = 1
  and cour_off.courseId = activity.courseId
  and activity.oid = ncr_course.course_oid (+)
  and cour_off.start_date between ncr_course.incept_date and ncr_course.expiry_date
  
  I would like to know how I can resolve the application of style not ANSI so that the 1 record is returned.
  
  Thank you!

  Well, native Oracle outer join does not allow outside join two tables, to do something like:

  select courseId, ncr_course.incept_date
  from (
        select activity.courseId,
               activity.oid,
               cour_off.start_date
          from cour_off, activity
          where cour_off.offNum = 1
            and cour_off.courseId = activity.courseId
       ), ncr_course
  where oid = ncr_course.course_oid(+)
  and start_date between ncr_course.incept_date(+) and ncr_course.expiry_date(+)
  /
  
  COURSEID   INCEPT_DA
  ---------- ---------
  MAT101
  
  SQL> 
  

  SY.

• Outer join - problem with the name of the table in the select list

  Oracle Database 11 g Enterprise Edition Release 11.2.0.2.0 - 64 bit Production

  create table (j1)

  number of C1,

  number of C2);

  create table (j2)

  number of C1,

  number of C2);

  insert into values j1 (1, 10);

  insert into j1 values (1, 100);

  insert into values j1 (1, 1000);

  insert into values j2 (1, 2);

  insert into values j2 (1, 4);

  insert into values j2 (1, 8);

  commit;

  Select c1, j1.c2, j2.c2 of outer join of j1 j2 using (c1); - DOES NOT

  Select c1, j1 j2 (c1) using outer join j2.c2. - WORK

  Why?

  Hello

  Interesting question!  Oracle goes very far in trying not to trigger an error.

  The OUTER keyword (if used; it is always optional) must be preceded by one of the keywords, right or LEFT.  Since neither LEFT, RIGHT, or FULL comes before OUTER in queries in your first message, it does not recognize as keyword OUTER and treats him like a table alias for table j1.  Since j1 has an alias, the real table name cannot be used in the SELECT clause.  This query is executed:

  SELECT c1

  outer.c2

  j2.c2

  External J1

  Join the HELP of j2 (c1)

  ;

  There is an INTERNAL join.  Add to your sample data:

  insert into values of j1 (-1, -10);

  insert into values of j2 (-2, -20);

  to be specified.

  Moreover, USING is short for confUSING.  I suggest you use IT for all the join conditions.  Everyone (unless they you write or read a manual) does.

• Outer join problem? test code included

  Hi all
  
  I have three tables:
  Master: It's the program_codes, titles and the active indicator.
  Main: Is the 'information sections"on a specific program.
  ModeOfS: He intones the sections of main program (abstract e.t.c) full-time part-time (PT) or (FT).
  
  They have all of the effective dates so when he ran during a given year knows whose registration was effective on this year here.
  When I run for 2003 I get 4 records which is correct, but when I run for 2002, I have only 2 folders. There is no valid records in the 'ModeOfS' table, but there are three records in the table of the 'hand' that are valid. But missing registration of P1 of the table of the 'hand '.
  
  I have external-joined the main table so I don't see why it doesn't show up. Any help would be great.
  
  Basically, program information may be considered at the level of "ModeOfS" but should not be, it's that his different text. So if it does and it is in the selected year then I want to see it. The limits of two YEARS will always be the same thing that this query will run for one YEAR

  Hello

  oraCraft wrote:
  Hi all

  I have three tables:
  Master: It's the program_codes, titles and the active indicator.
  Main: Is the 'information sections"on a specific program.
  ModeOfS: He intones the sections of main program (abstract e.t.c) full-time part-time (PT) or (FT).

  They have all application dates

  I'm confused. In the sample data you posted, it seems that only 2 tables have dates of application. Did you post erroneous data, at least for the master by mistake?

  so when he ran during a given year knows whose registration was effective on this year here.
  When I run for 2003 I get 4 records which is correct, but when I run for 2002, I have only 2 folders. There is no valid records in the 'ModeOfS' table, but there are three records in the table of the 'hand' that are valid. But missing registration of P1 of the table of the 'hand '.

  What are the correct results for 2002? They are:

  PROG TITLE         A ID PROG TERM_EFF   SECTION      TEXT               FK MO TERM_EFF   SECTION  TEXT
  ---- ------------- - -- ---- ---------- ------------ ----------------------- -- -- ---------- -------- -------------------
  0862 Mechanics     Y P1 0862       2000 ABSTRACT     This is Data
  0862 Mechanics     Y P2 0862       2000 OBJECTIVE    This is Data
  0862 Mechanics     Y P3 0862       2000 PREREQUISITE This is Data
  

  I have external-joined the main table so I don't see why it doesn't show up. ...

  One of the conditions involving modeofs is an outer join:

  ...  and main.ID = modeOfS.FK_ID(+)
  

  but the other is not:

  ...   and nvl(modeofs.TERM_EFF, 9999) = ( select nvl(max(m2.TERM_EFF), 9999)
  from modeofs m2
  where m2.TERM_EFF     <= 2003
  and m2.SECTION       = modeofs.SECTION
  and m2.MODE_OF_STUDY = modeofs.MODE_OF_STUDY)                           
  

  When you use the old notation to join, if no table of x is always marked with a + sign (as in condition 1 above), then all the conditions involving the x table must have a + sign, otherwise the effect will be an inner join. If you find this confusing, you're not alone. It is one of the reasons why I prefer the ANSI join rating:

  with     ranked_main     as
  (
       select     main.*
       ,     rank () over ( partition by  SECTION
                             order by          TERM_EFF     desc     nulls last
                      )           as MAIN_RANK
       from     main
       where     TERM_EFF     <= :target_year
       or     TERM_EFF     is null
  )
  ,     ranked_modeofs     AS
  (
       SELECT     modeofs.*
       ,     rank () over ( partition by  SECTION
                             ,          MODE_OF_STUDY
                             order by          TERM_EFF     desc     nulls last
                      )           as MODEOFS_RANK
       FROM     modeofs
       WHERE     TERM_EFF     <= :target_year
       OR     TERM_EFF     is null
  )
  select      master.*
  ,       ranked_main.*
  ,       ranked_modeOfS.*
  from           master
  join            ranked_main          on   ranked_main.PROGRAM_CODE     = master.PROGRAM_CODE
                         and     ranked_main.MAIN_RANK              = 1
  left outer join  ranked_modeOfS        on     ranked_modeofs.FK_ID          = ranked_main.ID
                                  and     ranked_modeofs.MODEOFS_RANK        = 1
  ;
  

• outer join: difference between two queries

  Below two queries which should give the same results in my opinion. I want that all records of u_protocol and the pval.u_protocol_variable_value value if necessary.
  
  Why the outer join in query2 does not work as in query1?
  
  
  Query1:

  select p.u_protocol_id, i.u_protocol_variable_value
  from lims_sys.u_protocol p,
  (
     select pval.u_protocol_id, pval.u_protocol_variable_value
     from lims_sys.u_protocol_variable pvar, lims_sys.u_protocol_value_user pval
     where pvar.u_protocol_variable_id = pval.u_protocol_variable_id
     and pvar.name = 'VALUE_Protocol_Group'
  ) i   
  where p.u_protocol_id  = i.u_protocol_id (+)

  Query2:

  select prt.u_protocol_id, pval.u_protocol_variable_value
  from lims_sys.u_protocol prt, lims_sys.u_protocol_variable pvar, lims_sys.u_protocol_value_user pval
  where pvar.u_protocol_variable_id = pval.u_protocol_variable_id
  and prt.u_protocol_id = pval.u_protocol_id (+)
  and pvar.name = 'VALUE_Protocol_Group'

  Hello

  When you perform an outer join, all conditions on the tables in option must be outer join conditions. Otherwise, the effect is an inner join.
  There is one exception: cascade of outer joins, external-junction b of a and c is outside attached to b. In this case, in the b - c join only columns of c are marked with the sign +.

  Re - write to obtain the same results as query1, query2 like this:

  select  prt.u_protocol_id
  ,      pval.u_protocol_variable_value
  from     lims_sys.u_protocol          prt
  ,      lims_sys.u_protocol_variable     pvar
  ,      lims_sys.u_protocol_value_user pval
  where     pvar.u_protocol_variable_id (+)     = pval.u_protocol_variable_id     -- cascading outer join
  and     prt.u_protocol_id           = pval.u_protocol_id (+)
  and     pvar.name (+)               = 'VALUE_Protocol_Group'     -- (+) added
  ;
  

  I find the syntax ANSI easier to use for all the joins and much easier for outer joins.

• Problem with Outer join and filter

  Hello
  
  I join two tables in the source using a left outer join. Outside of the join, I have a filter specified with condition TabA.C1 > TabB.C2.
  
  Now, when ODI generates the query it puts the left outer join on the filter condition as well. So he puts filter as
  
  where
  (1 = 1)
  And ((TabA.C1 = TabB.C1 (+)) AND)
  (TabA.C2 = TabB.C2 (+))
  And TabA.C10 > TabB.C14 (+)
  
  How to avoid this problem. I tried this performance on stage as well, always generated query remains the same.
  
  I use the incremental update of the IKM Oracle. My source and target are both on the same PB.
  
  
  ~ Chikk

  Hi Chikk,

  If you analyze the data, you'll see it's OK to have the "(+)" to the filter...

  Anyway, if you want to drop it, leave it as inner join and put the "(+)" manually to the join object.

  This help you?

• Problem with XMLTABLE and LEFT OUTER JOIN

  Hi all.
  
  I have a problem with XMLTABLE and LEFT OUTER JOIN, in 11g it returns the correct result, but in 10g it doesn't, it is illustrated as a INNER JOIN.
  

  SELECT * FROM v$version;
  
  Oracle Database 11g Enterprise Edition 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 Linux: Version 11.2.0.1.0 - Production
  NLSRTL Version 11.2.0.1.0 - Production
  
  --test for 11g
  
  CREATE TABLE XML_TEST(
       ID NUMBER(2,0),
       XML XMLTYPE
  );
  
  INSERT INTO XML_TEST
  VALUES
  (
       1,
       XMLTYPE
       ('
            <msg>
                 <data>
                      <fields>
                           <id>g1</id>
                           <dat>data1</dat>
                      </fields>
                 </data>
            </msg>
       ')
  );
  
  INSERT INTO XML_TEST
  VALUES
  (
       2,
       XMLTYPE
       ('
            <msg>
                 <data>
                      <fields>
                           <id>g2</id>
                           <dat>data2</dat>
                      </fields>
                 </data>
            </msg>
       ')
  );
  
  INSERT INTO XML_TEST
  VALUES
  (
       3,
       XMLTYPE
       ('
            <msg>
                 <data>
                      <fields>
                           <id>g3</id>
                           <dat>data3</dat>
                      </fields>
                      <fields>
                           <id>g4</id>
                           <dat>data4</dat>
                      </fields>
                      <fields>
                           <dat>data5</dat>
                      </fields>
                 </data>
            </msg>
       ')
  );
  
  SELECT
       t.id,
       x.dat,
       y.seqno,
       y.id_real
  FROM
       xml_test t,
       XMLTABLE
       (
            '/msg/data/fields'
            passing t.xml
            columns
                 dat VARCHAR2(10) path 'dat',
                 id XMLTYPE path 'id'
       )x LEFT OUTER JOIN
       XMLTABLE
       (
            'id'
            passing x.id
            columns
                 seqno FOR ORDINALITY,
                 id_real VARCHAR2(30) PATH '.'
       )y ON 1=1
  ;
  
  ID     DAT     SEQNO     ID_REAL
  --     -----     -----     -------
  1     data1     1     g1
  2     data2     1     g2
  3     data3     1     g3
  3     data4     1     g4
  3     data5          

  This is all nice, now the problem:
  

  Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - 64bi
  PL/SQL Release 10.2.0.1.0 - Production
  "CORE     10.2.0.1.0     Production"
  TNS for HPUX: Version 10.2.0.1.0 - Production
  NLSRTL Version 10.2.0.1.0 - Production
  
  --exactly the same environment as 11g (tables and rows)
  SELECT
       t.id,
       x.dat,
       y.seqno,
       y.id_real
  FROM
       xml_test t,
       XMLTABLE
       (
            '/msg/data/fields'
            passing t.xml
            columns
                 dat VARCHAR2(10) path 'dat',
                 id XMLTYPE path 'id'
       )x LEFT OUTER JOIN
       XMLTABLE
       (
            'id'
            passing x.id
            columns
                 seqno FOR ORDINALITY,
                 id_real VARCHAR2(30) PATH '.'
       )y ON 1=1
  ;
  
  ID     DAT     SEQNO     ID_REAL
  --     -----     -----     -------
  1     data1     1     g1
  2     data2     1     g2
  3     data3     1     g3
  3     data4     1     g4

  As you can see in 10g that I don't have the last row, it seems that Oracle 10 g does not recognize the LEFT OUTER JOIN.
  
  Is this a bug?, Metalink says that sometimes we can have an ORA-0600, but in this case there is no error results returned, just incorrect.
  
  Help, please.
  
  Kind regards.

  What about try the original Oracle method for outer joins? Using (+) without the extra space

  XMLTABLE(...COLUMNS ... id XMLTYPE PATH ... ) x,
  XMLTABLE(... PASSING x.id ...) (+) y
  

• outer join and LignesMax problem left

  I'm having a problem with the method and an sql join. My left table includes some documents that I want in the list, max 25 per page. These records have some notes are related in another table that is outer joined. When I specify the method in my cfoutput tag it includes my external joined table rows. So I could only go 5 records in my table left and 20 of my attachment table. What I want is 25 records in my table on the left and however the number of records in the table on the other that could be associated with these 25 records. Is this possible?

  I make two requests and avoid the outer join in this case:

• Problem with the implementation of Outer JOIN

  Hello Guru,
  
  Here's my scenario. I know that this can be achieved in several ways. But I need this in a single in aid Of JOINS EXTERNALrequest.
  
  I have two tables namely masters and transactions table. I need to join two columns (trx_name, trx_type) of the two tables and the need for all transactions. Part the trickiest is off 2 join columns, one column can be NULL in the main table.
  
  Script TABLES:
  
  create master table (mstr_no number, trx_name varchar2 (100), trx_type varchar2 (100), trx_module varchar2 (100));
  
  insert into masters values (1, 'yyyy', 'simple', 'cont');
  insert into masters values (2, 'bbbb', < NULL >, "cust");
  insert into masters values (3, 'yyyy', 'triple', "cont1");
  
  create table transaction (trx_no number, trx_name varchar2 (100), trx_type varchar2 (100));
  
  Insert in transaction values (1, 'yyyy', 'simple');
  Insert the transaction values (2, 'bbbb', 'double');
  Insert in transaction values (3, 'yyyy', 'triple');
  Insert in transaction values (4, 'cccc', 'purple');
  commit;
  
  I need output like below.
  
  1, 'yyyy', 'simple', 'cont '.
  2, 'bbbb', < NULL >, * "cust."
  3, 'yyyy', 'triple', "cont1".
  4, 'cccc', 'purple', < NULL >
  
  I need to join trx_name & trx_type in the two tables. Even if one of the column is null in the main table (mstr_no = 2), I have need of the corresponding value of trx_module since trx_name made match.
  
  
  My query:
  Select a.*, b.trx_module of transaction a, master b
  where a.trx_name = b.trx_name (+)
  and a.trx_type = NVL (b.trx_type (+), 'NULL')
  order of a.trx_no
  
  Appreciate your help.
  
  
  Concerning
  MN

  Maybe I'm wrong, but I don't think you can do this with a single outer join:

  with
  full_matches as (
  select *
    from master
   where trx_type is not null)
  ,
  partial_matches as (
  select *
    from master
   where trx_type is null)
  select a.*
       , coalesce(b.trx_module, c.trx_module) trx_module
    from transaction a
    left outer join full_matches b
      on (a.trx_name = b.trx_name and a.trx_type = b.trx_type)
    left outer join partial_matches c
      on (a.trx_name = c.trx_name)
   ;
  
  TRX_NO TRX_NAME             TRX_TYPE             TRX_MODULE
  ------ -------------------- -------------------- ------------
       1 aaaa                 single               cont
       3 aaaa                 triple               cont1
       2 bbbb                 double               cust
       4 cccc                 purple
  

  Re-reading my answer, I see that a short explanation might be useful: the query uses two outer joins: first masters lines with the name and type are joined, and then type the lines with missing. Him coalesce work to choose the most relevant information of module.

  Published by: Martin Preiss on June 7, 2013 20:24

• Problem with LEFT OUTER JOIN

  Hello
  
  I am in charge of the migration of a SQL Server 2000 database to Oracle 11 g, under what I also migrate some predefined queries, that my client has. However I can't seem to get the syntax right and it keeps failing. Could you please help me? Thank you.
  
  Query:

  SELECT *,(select r.recsolins from gx.repara r where r.percod=c.percod and r.concod=c.concod and r.rectpo='I' and r.recsts='F' and r.grppercod=10 and r.recnro=(select max(t.recnro) from gx.repara t where t.percod=c.percod and t.concod=c.concod and t.rectpo='I' andt.recsts='F' ) ) as NROID
  FROM gx.CONABO c, gx.abonad a  
  LEFT OUTER JOIN gx.CALLES y ON  y.dptocod=10 and y.ciucod=524 and y.CALCOD=A.AboCalEsq1, 
  LEFT OUTER JOIN gx.CALLES Z ON  z.dptocod=10 and z.ciucod=524 and z.CALCOD=A.AboCalEsq2 
  ,gx.calles x WHERE c.PERCOD in (10,60) and CONSTSHAB in ('C','D','P')
  and a.percod=c.percod and a.abocod=c.abocod and
  x.dptocod=10 and x.ciucod=524
  and x.calcod=abocal
  order by c.percod,c.concod;

  The fields are correct, but I get not found when expected in FROM clause.
  
  Published by: n on June 5, 2012 13:47
  

• Problem with ANSI OUTER JOIN

  Hi all
  
  I have issues with the help of ANSI LEFT JOIN compared to Oracle (+). Below test I did the same thing.

        create table emp (emp_id number(10), emp_name varchar2(50));
        create table courses (course_id number(10), emp_id number(10), course_name varchar2(50));
        
        INSERT INTO EMP values(1,'A');
        INSERT INTO EMP values(2,'B');
        INSERT INTO EMP values(3,'C');
  
        INSERT INTO COURSES values(1,1,'ORACLE');
        INSERT INTO COURSES values(2,1,'JAVA');
        INSERT INTO COURSES values(3,3,'C#');
  
        --*Query 1
        SELECT a.*, b.*
        FROM EMP a  LEFT JOIN COURSES b 
        ON a.emp_id = b.emp_id
        AND a.emp_name = 'A'
  
        --*Query 2      
        SELECT a.*, b.* 
        FROM EMP a, COURSES b 
        where a.emp_id = b.emp_id(+)
        and a.emp_name = 'A'

  Here Query1 return all records of 4 same records regardless of emp_name = 'A' where as Query2 returns 2 records of ep_name = 'A' which is correct.
  
  Is this correct? I'm confused if you use the standard ANSI OUTER JOINS or not.
  
  I am using Oracle 11g
  
  Thank you.

  Change your AND WHERE, in the style of ANSI, select:

  SELECT a.*, b.*
  FROM EMP a  LEFT JOIN COURSES b
  ON a.emp_id = b.emp_id
  WHERE a.emp_name = 'A'
  

  Filters in the clause are those who use the (+) in the Oracle syntax.
  Filters WITHOUT (+) in the Oracle syntax should be in the WHERE clause using the ANSI syntax.

  Published by: Kim Berg Hansen on September 23, 2011 08:03

• LEFT OUTER JOIN, trigger after QUERY problem

  Hello
  
  Guide to please the following
  
  I wrote under query in QUERY after a BLOCK of TABULAR DATA, not as a single text element, called INVENTORY_ITEM
  
  Select c.cat |' '|| s.SubCat |' '|| L1.lvl1 POINT IN: DATABLOCK. INVENTORY_ITEM
  of itemcat c
  LEFT OUTER JOIN itemsubcat s on (c.catid = s.catid)
  LEFT OUTER JOIN lvl1 l1 on (s.subcatid = l1.subcatid)
  
  When I compile the module an error is generated
  
  «* ' Met the 'LEFT' symbol when waiting for one of the following values for the group with intersect less order start union where connect '.» *
  
  Top query works fine with ORACLE SQL DEVELOPER.
  
  Any solution please.
  
  Kind regards

  Difference

• Problem format (LEFT OUTER JOIN)?

  THE addresses of Mutiple of return as a single record + current addresses
  
  >
  Hi all
  
  I have to back student addresses home and dormitory under a single registration.
  
  He had to go something like this:

  LAST_NAME     FIRST_NAME     ADDY_TYPE   ADDRESS             ZIP
  Smith                John             HOME         123 Awesome St     10003
  Smith               John               DORM         Oak Quad             10013

  In this format the desired:

  LAST_NAME  FIRST_NAME     ADDY_TYPE  ADDRESS         ZIP        ADDY_TYPE     ADDRESS     ZIP
  Smith            John      HOME        123 Awesome St  10003   DORM            Oak Quad     10013

  You also need to get their last addresses by date.
  The database hold records of all students have places moving from dorm to dorm
  and some permanent residence ("HOME") has changed as well.
  To return only a DORM address and only a HOME address
  for each student.
  
  I'm looking at possibly a function BOX to put on a line/record and RANK BY() or DENSE_RANK to determine the last addresses.
  
  Hope I'm making some sense and as always very grateful for any help. Thank you.
  >
  
  The correct code provided by Frank Kulash here:

  WITH    got_rnum     AS
  (
       SELECT     last_name
       ,     first_name
       ,     addy_type
       ,     address
       ,     zip
       ,     ROW_NUMBER () OVER ( PARTITION BY  last_name
                                 ,                    first_name
                           ,             addy_type
                           ORDER BY        addy_date     DESC     NULLS LAST
                         ) AS rnum
       FROM    table_x
  --     WHERE     ...          -- Any filtering goes here
  )
  SELECT    last_name
  ,       first_name
  ,       MIN (CASE WHEN addy_type = 'HOME' THEN address END)     AS home_address
  ,       MIN (CASE WHEN addy_type = 'HOME' THEN zip     END)     AS home_zip
  ,       MIN (CASE WHEN addy_type = 'DORM' THEN address END)     AS dorm_address
  ,       MIN (CASE WHEN addy_type = 'DORM' THEN zip     END)     AS dorm_zip
  FROM       got_rnum
  WHERE       rnum     = 1
  GROUP BY  last_name
  ,            first_name
  ;

  I need to add a 'NATION' field, located on another table for the addresses of welcome for foreign students.
  I made a LEFT OUTER JOIN with the table of the NATION and the release came out like this:

  LAST_NAME  FIRST_NAME     ADDY_TYPE  ADDRESS   ZIP      NATION    ADDY_TYPE       ADDRESS     ZIP
  Smith            John      HOME        Rue Henry M1V 4F4  CANADA      null              null             null
  Smith            John      null        null      null     null        DORM               Oak Quad     10013

  My desired output would be like this:

  LAST_NAME  FIRST_NAME     ADDY_TYPE  ADDRESS   ZIP      NATION    ADDY_TYPE       ADDRESS     ZIP
  Smith            John      HOME        Rue Henry M1V 4F4  CANADA    DORM              Oak Quad     10013

  Maybe it's something I'm not right. What is the way I'm joining tables?
  
  As always very grateful for your contributions. Thank you.

  Give a glance to your group by, you group on the nation, but it has two values (NULL and CANADA). Try this way:

  WITH    got_rnum     AS
  (
       SELECT     STUINFO_id
    , STUINFO_last_name
       ,     STUINFO_first_name
       ,     ADDRESSLIST_atyp_code
       ,     ADDRESSLIST_street_line1
    , ADDRESSLIST_street_line2
    , ADDRESSLIST_city
    , ADDRESSLIST_stat_code
       ,     ADDRESSLIST_zip
  
  , ADDRESSLIST_natn_code
  , NATION_nation
       ,     ROW_NUMBER () OVER ( PARTITION BY  STUINFO_last_name
                                 ,                    STUINFO_first_name
                           ,                         ADDRESSLIST_atyp_code
  
                           ORDER BY        ADDRESSLIST_from_date     DESC     NULLS LAST
                         ) AS rnum
       FROM STUINFO JOIN CLASSROSTER ON STUINFO_pidm = CLASSROSTER_pidm JOIN ADDRESSLIST ON ADDRESSLIST_pidm = STUINFO_pidm LEFT OUTER JOIN NATION ON ADDRESSLIST_NATN_CODE =NATION_CODE
  -- The WHERE part determines if the student is currently enrolled in a class
  -- ADDRESSLIST_to_date is the last date the student will be living in that residence
  WHERE ADDRESSLIST_atyp_code IN ('PR', 'CA') and  STUINFO_change_ind IS NULL and STUINFO_last_name !='Registrar'
  and CLASSROSTER_term_code='200909' and CLASSROSTER_PTRM_CODE IN ('D', 'D1', 'D2') and CLASSROSTER_CAMP_CODE='1'
  
  and (ADDRESSLIST_to_date is NULL OR ADDRESSLIST_TO_DATE > SYSDATE)
  )
  SELECT    STUINFO_id
  ,   STUINFO_last_name
  ,       STUINFO_first_name
  ,       MIN (CASE WHEN ADDRESSLIST_atyp_code = 'PR' THEN ADDRESSLIST_STREET_LINE1  END)     AS PR_ADDRESSLIST_STREET_LINE1
  ,       MIN (CASE WHEN ADDRESSLIST_atyp_code = 'PR' THEN ADDRESSLIST_STREET_LINE2  END)     AS PR_ADDRESSLIST_STREET_LINE2
  ,       MIN (CASE WHEN ADDRESSLIST_atyp_code = 'PR' THEN ADDRESSLIST_city     END)     AS PR_ADDRESSLIST_city
  ,       MIN (CASE WHEN ADDRESSLIST_atyp_code = 'PR' THEN ADDRESSLIST_stat_code     END)     AS PR_ADDRESSLIST_stat_code
  ,       MIN (CASE WHEN ADDRESSLIST_atyp_code = 'PR' THEN ADDRESSLIST_zip     END)     AS PR_ADDRESSLIST_zip
  ,       MIN (CASE WHEN ADDRESSLIST_natn_code IS  NULL THEN ADDRESSLIST_natn_code     END)     AS PR_ADDRESSLIST_natn_code
  , MIN(NATION_nation) NATION_nation
  ,       MIN (CASE WHEN ADDRESSLIST_atyp_code = 'CA' THEN ADDRESSLIST_STREET_LINE1  END)     AS CA_ADDRESSLIST_STREET_LINE1
  ,       MIN (CASE WHEN ADDRESSLIST_atyp_code = 'CA' THEN ADDRESSLIST_STREET_LINE2  END)     AS CA_ADDRESSLIST_STREET_LINE2
  ,       MIN (CASE WHEN ADDRESSLIST_atyp_code = 'CA' THEN ADDRESSLIST_city     END)     AS CA_ADDRESSLIST_city
  ,       MIN (CASE WHEN ADDRESSLIST_atyp_code = 'CA' THEN ADDRESSLIST_stat_code     END)     AS CA_ADDRESSLIST_stat_code
  ,       MIN (CASE WHEN ADDRESSLIST_atyp_code = 'CA' THEN ADDRESSLIST_zip     END)     AS CA_ADDRESSLIST_zip
  
  FROM       got_rnum
  WHERE       rnum     = 1
  GROUP BY  STUINFO_last_name
  ,            STUINFO_first_name
  ,         STUINFO_id
  ORDER BY STUINFO_last_name;
  

  Max

• records with an outer join restrictions while using a sub query?

  I have the following code:

  declare

  Default char Activeonly ' n ';

  SearchKey varchar2 (15) default '413041494500064';

  number of lclAcctNo;

  Start

  Select

  rat_acct_no in lclAcctNo

  ACCT,.

  marketer_account ma1,

  Marketing agent,

  Account_Service,

  Account_Address

  Where (Rat_Acct_No = Mka_Acct_No

  and Mka_Exp_Dt = (ma2 select Max (Mka_Exp_Dt) of Marketer_Account

  Where Mka_Acct_No = Rat_Acct_No)

  and mka_service_type = 'E')

  And Rat_Acct_No = Acs_Acct_No

  And Rat_Acct_No = Add_Acct_No

  "And Add_Address_Type s ="

  And Rat_Full_Css_Acct_No as Trim (Searchkey) | '%'

  And (Activeonly is Null or Activeonly = ' or (Rat_Acct_Status_Cd = 'A' or Rat_Acct_Status_Cd is Null))

  and rownum < 1000;

  dbms_output.put_line ('Account' | lclAcctNo);

  end;

  I'm doing the table MARKETER_ACCOUNT (MKA_fields) an outer join, because the data I expect to will not be on the table, but I want even when the table of ACCT.

  I can't do an outer join on subqueries, so wanted to know if there was a way more easy/better to Edifier cela?

  I use Oracle 11.2 g.

  Thanks for any help.

  Sean

  Basically, I think, your outer join is ruined by the subquery correlated in the WHERE clause:

  R.ToDate = (Select MAX(ToDate) from R r2
  

  Since you joined outside R to A tell you the database to give you the lines of A for which R.ToDate is null * AND * meets your requirement: and this is not possible. Tom Kyte gave the classic explanation for this kind of problem long ago on AskTom: http://asktom.oracle.com/pls/asktom/f?p=100:11:0:P11_QUESTION_ID:4963137609733 ("ask yourself this - how a row in T2 (EMP in your example) the MISSING two (composed due to the outer join) AND have a column that corresponds to something?")  It cannot be").

  Here's your example in DDL + DML form: ''

  create table account)

  VARCHAR2 (10) key

  , name varchar2 (10)

  , status varchar2 (10)

  );

  insert into account values ('A1', 'John', 'Active');

  insert into account values ('A2', 'Mary', 'Active');

  insert into account values ('A3', 'James', 'Inactive');

  Create array of marketing)

  VARCHAR2 (10) key

  , Varchar2 (10) Mktr

  );

  insert into values Marketer ("M1", "ABC");

  insert into values Marketer ("M2", "DEF");

  create table relationship)

  VARCHAR2 (10) key

  , Varchar2 (10) AccKey

  , MktKey varchar2 (10)

  , FromDt varchar2 (10)

  , Varchar2 (10) so far

  );

  insert into the relationship values ('R1', 'A1', 'M1', "" 01/01/2012 ', December 31, 2012 ' ");

  insert into the relationship values ('R2', 'A1', 'M2', "01/01/2013 ', 'present'");

  insert into the relationship values ('R3', 'A2', 'M2', ' 01 /' 02/2013, 31 / 05/2013 ');

  Select B.SID

  M.Mktr

  R.FromDt

  R.ToDate

  account A

  left join

  relationship R

  on (a.Key = R.AccKey)

  left join

  Distributor M

  on (R.MktKey = M.Key)

  where R.ToDate = (Select MAX (r2. To date)

  relationship r2

  where r2. AccKey = A.Key)

  and A.Status = 'Active '.

  ;

  MKTR FROMDT NAME DATE

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

  Mary DEF 2/1/2013 5/31/2013

  John DEF 01/01/2013 presents

  -a possibility to obtain all the relevant lines would be to perform filtering after the join:

  with

  BaseData as)

  Select B.SID

  A.key

  M.Mktr

  R.FromDt

  R.ToDate

  account A

  left join

  relationship R

  on (a.Key = R.AccKey)

  left join

  Distributor M

  on (R.MktKey = M.Key)

  )

  Select basedata.*

  of basedata

  where basedata. ToDate = (Select MAX (r2. To date)

  relationship r2

  where r2. AccKey = basedata. Key)

  or basedata. This day is null;

  KEY MKTR FROMDT NAME DATE

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

  Mary A2 DEF 2/1/2013 5/31/2013

  John A1 DEF 01/01/2013 presents

  James A3

  Of course, there are many other possible solutions - since it's SQL...

  Concerning

  Martin