Need to fix SQL Join so that charges null return 0

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  I need some advice on how to approach the question under the requirement of report. It was me mad for almost 2 weeks now, and my time is running out.
  Here is a simplified version of the database
  
  Four paintings: event, Service, commitment, defendant.
  A defendant may have more than 1 commitment, but they only open at a time commitment.
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  These events may be just general events or related to the service.
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     ("DEF_ID" NUMBER, 
       "FIRST_NAME" VARCHAR2(50 BYTE), 
       "LAST_NAME" VARCHAR2(50 BYTE), 
       "ACTIVE" NUMBER DEFAULT 1
     ) ;
  Insert into DEFENDANT (DEF_ID,FIRST_NAME,LAST_NAME,ACTIVE) values (1,'Joe','Bloggs',1);
  Insert into DEFENDANT (DEF_ID,FIRST_NAME,LAST_NAME,ACTIVE) values (2,'John','Doe',1);
  --------------------
   CREATE TABLE "ENGAGEMENT" 
     ("ENG_ID" NUMBER, 
       "DEF_ID" NUMBER, 
       "COURT_NAME" VARCHAR2(20 BYTE), 
       "DATE_JOINED" DATE, 
       "DATE_TERMINATED" DATE, 
       "ETHNICITY" VARCHAR2(50 BYTE), 
       "ACTIVE" VARCHAR2(20 BYTE)
     ) ;
  /
  
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  Insert into ENGAGEMENT (ENG_ID,DEF_ID,COURT_NAME,DATE_JOINED,DATE_TERMINATED,ETHNICITY,ACTIVE) values (2,2,'BBB',to_date('01/10/12','DD/MM/RR'),null,'Asian','1');
  Insert into ENGAGEMENT (ENG_ID,DEF_ID,COURT_NAME,DATE_JOINED,DATE_TERMINATED,ETHNICITY,ACTIVE) values (3,1,'AAA',to_date('22/09/12','DD/MM/RR'),null,'European','1');
  -------------------------------------------------------- 
   CREATE TABLE "EVENT" 
     ("EVENT_ID" NUMBER, 
       "ENG_ID" NUMBER, 
       "NOTES" VARCHAR2(20 BYTE), 
       "RELATED_SERVICE_ID" NUMBER, 
       "START_DATE" DATE, 
       "END_DATE" DATE, 
       "ACTIVE" NUMBER DEFAULT 1
     ) ;
  /
  --------------------------------------------------------
  Insert into EVENT (EVENT_ID,ENG_ID,NOTES,RELATED_SERVICE_ID,START_DATE,END_DATE,ACTIVE) values (1,1,null,1,to_date('01/09/12','DD/MM/RR'),to_date('02/09/12','DD/MM/RR'),1);
  Insert into EVENT (EVENT_ID,ENG_ID,NOTES,RELATED_SERVICE_ID,START_DATE,END_DATE,ACTIVE) values (2,1,null,1,to_date('23/09/12','DD/MM/RR'),null,1);
  Insert into EVENT (EVENT_ID,ENG_ID,NOTES,RELATED_SERVICE_ID,START_DATE,END_DATE,ACTIVE) values (3,1,null,2,to_date('15/10/12','DD/MM/RR'),to_date('16/10/12','DD/MM/RR'),1);
  Insert into EVENT (EVENT_ID,ENG_ID,NOTES,RELATED_SERVICE_ID,START_DATE,END_DATE,ACTIVE) values (4,2,null,null,to_date('02/10/12','DD/MM/RR'),null,1);
  Insert into EVENT (EVENT_ID,ENG_ID,NOTES,RELATED_SERVICE_ID,START_DATE,END_DATE,ACTIVE) values (5,2,null,2,to_date('03/10/12','DD/MM/RR'),null,1);
  Insert into EVENT (EVENT_ID,ENG_ID,NOTES,RELATED_SERVICE_ID,START_DATE,END_DATE,ACTIVE) values (6,3,null,null,to_date('22/09/12','DD/MM/RR'),to_date('23/09/12','DD/MM/RR'),1);
  Insert into EVENT (EVENT_ID,ENG_ID,NOTES,RELATED_SERVICE_ID,START_DATE,END_DATE,ACTIVE) values (7,3,null,4,to_date('23/09/12','DD/MM/RR'),null,1);
  Insert into EVENT (EVENT_ID,ENG_ID,NOTES,RELATED_SERVICE_ID,START_DATE,END_DATE,ACTIVE) values (8,2,null,null,to_date('12/10/12','DD/MM/RR'),null,1);
  --------------------------------------------------------
   CREATE TABLE "SERVICE" 
     (     "SERVICE_ID" NUMBER, 
       "ENG_ID" NUMBER, 
       "DESCRIPTION" VARCHAR2(200 BYTE), 
       "DATE_STARTED" DATE, 
       "DATE_TERMINATED" DATE, 
       "ACTIVE" NUMBER DEFAULT 1
     );
  /
  
  Insert into SERVICE (SERVICE_ID,ENG_ID,DESCRIPTION,DATE_STARTED,DATE_TERMINATED,ACTIVE) values (1,1,'Counselling',to_date('15/09/12','DD/MM/RR'),to_date('18/09/12','DD/MM/RR'),1);
  Insert into SERVICE (SERVICE_ID,ENG_ID,DESCRIPTION,DATE_STARTED,DATE_TERMINATED,ACTIVE) values (2,1,'Housing',to_date('20/09/12','DD/MM/RR'),null,1);
  Insert into SERVICE (SERVICE_ID,ENG_ID,DESCRIPTION,DATE_STARTED,DATE_TERMINATED,ACTIVE) values (3,2,'Treatment',to_date('01/10/12','DD/MM/RR'),to_date('15/10/12','DD/MM/RR'),1);
  Insert into SERVICE (SERVICE_ID,ENG_ID,DESCRIPTION,DATE_STARTED,DATE_TERMINATED,ACTIVE) values (4,3,'Housing',null,null,1);
  Insert into SERVICE (SERVICE_ID,ENG_ID,DESCRIPTION,DATE_STARTED,DATE_TERMINATED,ACTIVE) values (5,1,'Other',to_date('05/10/12','DD/MM/RR'),null,0);
  Insert into SERVICE (SERVICE_ID,ENG_ID,DESCRIPTION,DATE_STARTED,DATE_TERMINATED,ACTIVE) values (6,2,'Treatment',to_date('16/10/12','DD/MM/RR'),null,1);

  ****
  And that's the perspective I think to use as a basis for the report

  CREATE OR REPLACE FORCE VIEW "BASE_VW" 
   
  AS
    SELECT Def.Def_Id,
      Def.First_Name,
      Def.Last_Name,
      Eng.Eng_Id,
      Eng.Court_Name,
      Eng.Date_Joined,
      Eng.Date_Terminated,
      Eng.Ethnicity,
      Ser.Service_Id,
      Ser.Description,
      Ser.Date_Started    AS Service_Start_Date,
      Ser.Date_Terminated AS Service_Date_Terminated,
      Ser.Active          AS Service_Active,
      Ev.Event_Id,
      Ev.Related_Service_Id,
      Ev.Start_Date,
      Ev.End_Date,
      Ev.Notes,
      ev.active AS event_active
    FROM Defendant Def
    LEFT OUTER JOIN Engagement Eng
    ON Def.Def_Id = Eng.Def_Id
    LEFT OUTER JOIN Service Ser
    ON Eng.Eng_Id = Ser.Eng_Id
    LEFT OUTER JOIN Event Ev
    ON Ev.Eng_Id = Eng.Eng_Id;

  ****
  Requirement:
  Report parameter: Start Date, end Date, Court_name
  Of selected Court_name, list of defendants who are currently participating in the Court.
  For each display of the defendant
  Section 1: Identification of the details: first name, surname, ethnicity, Date of arrival in the Court
  Section 2: All currently active Services that the defendant attend
  Section 3: All the events related to the service attending the defendant
  Section 4: All other events (don't have IDS Service related)
  
  The user must be able to download the full report in the spreadsheet or in PDF format.
  I tried to create a set of Union chooses (but the format is not that good, when no data return show nothing, I would like to show rather some messages as "There is no associated event, rather than nothing")
  and he produced a report for 1 defendant at the same time.
  
  We use Oracle APEX, so only select statement or statement select return PL/SQL Code is valid for the report source.
  At our place, we use Jasper adjacent report at the APEX, but I have very little experience with report of Jasper.
  The developer who knows a lot about the report of jasper is too busy to help me.
  
  Currently I use the union chooses as below:

  With Current_Engagement As
  ( Select Eng_Id From Engagement
    Where Def_Id =2
    And Date_Joined Is Not Null
    And ( Date_Terminated Is Null Or Date_Terminated > Sysdate)
    And Rownum =1
  )
  Select '1.Defendant ID' as col1, 'First Name' as col2, 'Last Name' as col3, 'Court Name' as col4, 'Ethnicity' as col5, 'Date Joined' as col6, 'Date Terminated' as col7
  From Dual
  
  Union All
  
  Select Distinct to_char(Def_Id), First_Name, Last_Name, Court_Name, Ethnicity, to_char(Date_Joined), to_char(Date_Terminated)
  From Base_Vw Inner Join Current_Engagement Ce On Base_Vw.Eng_Id = Ce.Eng_Id
  
  Union All 
  select '2.Service ID', 'Service Description', 'Start Date', 'End Date', Null, Null, Null
  from dual
  
  Union All
  
  Select distinct to_char(service_id), description, to_char(service_start_date), to_char(service_date_terminated), null, null, null
  From Base_Vw Inner Join Current_Engagement Ce On Base_Vw.Eng_Id = Ce.Eng_Id
  where service_active =1
  
  Union All
  Select '3.Event ID', 'Related Service ID', 'Start Date', 'End date', 'Notes', null, null
  From Dual
  
  Union All
  Select distinct to_char(event_id), to_char(related_service_id), to_char(start_date), to_char(end_date), notes, null, null
  from Base_Vw Inner Join Current_Engagement Ce On Base_Vw.Eng_Id = Ce.Eng_Id
  Where Event_Active = 1
  and related_service_id is not null
  
  Union All
  
  Select '4.Event ID', 'Start Date', 'End date', 'Notes', null, null, null
  From Dual
  
  Union All
  
  Select distinct to_char(event_id), to_char(start_date), to_char(end_date), notes, null, null, null
  From Base_Vw Inner Join Current_Engagement Ce On Base_Vw.Eng_Id = Ce.Eng_Id
  Where Event_Active = 1
  and related_service_id is null

  and the result is a bit what I try to achieve (except that I need to work on the screen a message "No data found" rather than anything), but it seems that my code works for one respondent.

  COL1                           COL2                           COL3                           COL4                 COL5                 COL6        COL7          
  ------------------------------ ------------------------------ ------------------------------ -------------------- -------------------- ----------- ---------------
  1.Defendant ID                 First Name                     Last Name                      Court Name           Ethnicity            Date Joined Date Terminated 
  2                              John                           Doe                            BBB                  Asian                01/10/12                    
  2.Service ID                   Service Description            Start Date                     End Date                                                              
  3                              Treatment                      01/10/12                       15/10/12                                                              
  6                              Treatment                      16/10/12                                                                                             
  3.Event ID                     Related Service ID             Start Date                     End date             Notes                                            
  5                              2                              03/10/12                                                                                             
  4.Event ID                     Start Date                     End date                       Notes                                                                 
  4                              02/10/12                                                                                                                            
  8                              12/10/12                                                                                                                            
  
   10 rows selected 
       

  However, I struggle to find a way to apply this to more than 1 defendant and always keep the format.

  Defendant 1
  All details related to defendant 1 
  Defendant 2
  All details relayed to defendant 2
  ...
  Defendant n
  All details relayed to defendant n

  Is it possible to view a report as above using only the SQL script?
  
  
  Thank you very much in advance. I'm ready to financially compensate someone who can give me a solution.
  
  Edited by: Ann586341. Base_vw SQL view script is fixed.

  Hi, Ann.

  The query I posted earlier can be simplified a bit. You need not partitioned outer joins, which means that you don't need d_num.

  WITH     current_engagement     AS
  (
       SELECT  Def.Def_Id
       ,     Def.First_Name
       ,         Def.Last_Name
       ,         Eng.Eng_Id
       ,         Eng.Court_Name
       ,         Eng.Date_Joined
       ,         Eng.Date_Terminated
       ,         Eng.Ethnicity
       ,     ROW_NUMBER () OVER ( PARTITION BY  def.def_id
                                 ORDER BY          eng.date_joined
                           ,                eng.eng_id
                         )      AS e_num
       FROM      Defendant   Def
         JOIN       Engagement  Eng  ON   Def.Def_Id = Eng.Def_Id
       WHERE     (   Eng.Date_Terminated  IS NULL
            OR  Eng.Date_Terminated      >= TO_DATE (:p_start_date, 'DD/MM/YYYY')
            )
       AND     Eng.Date_Joined           <= TO_DATE (:p_end_date,   'DD/MM/YYYY')
       AND     Eng.court_name           = :p_court_name
  )
  ,     event_types          AS
  (
       SELECT  3.2 AS event_type     FROM dual     UNION ALL
       SELECT     4.2                   FROM dual
  )
  ,     union_results          AS
  (               -- Section 1 Header: 1 row per defendant
       SELECT  '1.Defendant ID'     AS col1
       ,     'First Name'           AS col2
       ,     'Last Name'          AS col3
       ,     'Court Name'           AS col4
  --     ,      'Ethnicity'           AS col5 ...
       ,     def_id
       ,     1.1               AS section_num
       ,     0               AS r_num
       FROM     current_engagement
       WHERE     e_num     = 1
      UNION ALL          -- Section 1 Data: 1 row per defendant
           SELECT     TO_CHAR (def_id)        AS col1
       ,     first_name             AS col2
       ,     last_name             AS col3
       ,     court_name             AS col4
       ,     def_id
       ,     1.2               AS section_num
       ,     1               AS r_num
       FROM     current_engagement
       WHERE     e_num     = 1
      UNION ALL          -- Section 2 Header: 1 row per defendant
         SELECT  '2.Service ID'             AS col1
         ,       'Service Description'     AS col2
         ,       'Start Date'          AS col3
         ,       'End Date'          AS col4
         ,       def_id
         ,       2.1               AS section_num
         ,       0               AS r_num
         FROM    current_engagement
      UNION ALL          -- Section 2 Data: 1 row per service (at least 1 per defendant)
         SELECT DISTINCT
                     NVL ( TO_CHAR (s.service_id),  'No Data')      AS col1
         ,       NVL (s.description,            'No Data')      AS col2
         ,       NVL ( TO_CHAR (s.date_started, 'DD/MM/YYYY')
                             ,                           'No Data')        AS col3
         ,       NVL ( TO_CHAR (s.date_terminated, 'DD/MM/YYYY')
                             ,                           'No Data')      AS col4
         ,       ce2.def_id
         ,       2.2                               AS section_num
         ,       s.service_id                AS r_num
         FROM              current_engagement  ce2
         LEFT OUTER JOIN     service              s      ON   s.eng_id  = ce2.eng_id
                                     AND      s.active  = 1
      UNION ALL          -- Section 3 Header: 1 row per defendant
         SELECT  '3.Event ID'               AS col1
         ,       'Related Service ID'     AS col2
         ,       'Start Date'          AS col3
         ,       'End date'          AS col4
         ,       def_id
         ,       3.1               AS section_num
         ,       0               AS r_num
         FROM    current_engagement
      UNION ALL          -- Section 4 Header: 1 row per defendant
         SELECT  '4.Event ID'               AS col1
         ,       'Start Date'          AS col2
         ,       'End date'          AS col3
         ,       'Notes'               AS col4
         ,       def_id
         ,       4.1               AS section_num
         ,       0               AS r_num
         FROM    current_engagement
      UNION ALL          -- Section 3+4 Data: 1 row per event (at least 2 per defendant)
         SELECT DISTINCT
                     NVL ( TO_CHAR (e.event_id),    'No Data')      AS col1
         ,       NVL ( CASE  et.event_type
                                   WHEN  3.2
                  THEN  TO_CHAR (e.related_service_id)
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                 END
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                                   WHEN  3.2
                  THEN  TO_CHAR (e.start_date, 'DD/MM/YYYY')
                  ELSE  TO_CHAR (e.end_date,   'DD/MM/YYYY')
                 END
                             ,                           'No Data')        AS col3
         ,       NVL ( CASE  et.event_type
                                   WHEN  3.2
                  THEN  TO_CHAR (e.end_date  , 'DD/MM/YYYY')
                  ELSE  e.notes
                 END
                             ,                           'No Data')      AS col4
         ,       ce34.def_id
         ,       et.event_type                          AS section_num
         ,       e.event_id                           AS r_num
         FROM              current_engagement  ce34
         CROSS JOIN     event_types         et
         LEFT OUTER JOIN     event              e      ON   e.eng_id  = ce34.eng_id
                                     AND  e.active  = 1
                                     AND  NVL2 ( e.related_service_id
                                                  , 3.2
                                              , 4.2
                                              )    = et.event_type
  )
  SELECT       col1, col2, col3, col4
  FROM       union_results
  ORDER BY  def_id
  ,            section_num
  ,       r_num
  ;
  

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  AND t1.id ( + ) = t3.foreign_id
  AND t3.some_date_column > t2.another_date_column
  
  

  However, using the query above returns no results if the date condition is not met. I still need to show t1.column1 and a null t3.column2.

  How should I do this?

  Thank you

  Allen

  Edit: Added information about the requirement.

  Hi Allen

  1. SELECT t1.column1, t3.column2
  2. T1, t2, t3
  3. WHERE t1.id = t2.foreign_id
  4. AND t1.id = t3.foreign_id (+)
  5. AND t3.some_date_column (+) > t2.another_date_column

  I guess that this t1.column1 must not be null. Or am I wrong? The + sign must be placed on the side where draws are accepted. You must repeat it for each condition on the table.

  Alternativlely you can use the LEFT OUT JOIN syntax. If the two columns are allowed null you need a FULL OUTER JOIN.

  BTW: The join to t2 is not required if a refefernce constraint forced.

• What is the new method of SQL joins

  Dear all,

  What is the new method of SQL joins

  1

  SELECT <fields>
    FROM TableA a INNER JOIN TableB b ON a.key = b.key
  

  2

  SELECT <fields>
    FROM TableA a, TableB b
   WHERE a.key = b.key
  

  Above the two queries work very well in PL/SQL, but request that no 1 does not work in Oracle Forms 10 g

  Kind regards

  Zafar Iqbal

  Hello

  Zafar Iqbal wrote:

  Dear all,

  What is the new method of SQL joins

  1

  1. SELECT
  2. TableA, TableB INNER JOIN a and b WE a.key, b.key =

  2

  1. SELECT
  2. FROM TableA, TableB b
  3. WHERE a.key, b.key =

  Above the two queries work very well in PL/SQL, but request that no 1 does not work in Oracle Forms 10 g

  Kind regards

  Zafar Iqbal

  What, exactly, is your question?

  Literally ask you which of these 2 methods is new?  As mentioned above, none is really new.  Both participated in Oracle at least 13 years.

  Query 1, above, ANSI join syntax uses, which is more recent.   As mentioned above, Oracle has started to support that the syntax in version 9.1 (2001) previous versions only supported syntax used in query 2.

  Did you mean to ask something else?  Maybe "How can I use a query as a query 1 forms?" or "are there other places where a method works, but the other is not?

• 4.0 need a fix for Black or 4page behind background jpg

  Web design with full history jpg but 2 pages have a weird need a fix of a black behind the jpg and the other has 4 pg background. Frustrated customer he wanted 5 days ago. Help, please. Mac, Dreamweaver 4.0

  Thanks to everyone who tried to help me! I finally solved the problem by opening a new page in the site and copy the page, naming a new and throw the old one. It happened because I moved the site on the desktop file and then returned to the dreamweaver program that created more than one folder. The dark behind the bottom left.
  Ann

• need to customize SQL query verification

  Friends,
  
  I need to create a custom sql query. Please see the following scenarios:
  
  I want to audit all users who are successfully and unsuccessfully to logon to my oracle database. Tahts why I enbale 2 following options:
  
  SQL > session audit every time that successful;
  Verification succeeded.
  
  SQL > noaudit session each time it fails.
  Verification succeeded.
  
  And I found all the users using the following sql query:
  
  "Select username, to_char (timestamp," MM/DD/YY HH24 ' ") Timestamp, obj_name, returncode, action_name of."
  "dba_audit_trail where action_name in ('LOGIN', 'LOGOUT') order by timestamp desc '.
  
  USERNAME TIMESTAMP OBJ_NAME RETURN_CODE ACTION_NAME
  -------- --------- -------- ------------- -----------
  RIPON 14-12-08 11:51 0 LOGON
  SHIPON 14-12-08 11:50 1017 LOGON
  RIPON 14-12-08 11:50 1017 LOGON
  
  
  Here, return_code = 1017 means the user cannot successfully loged on
  and, return_code = 0 the average user can successfully connected
  
  
  Now, I want to custom to the query that is readable to others easily. As
  
  I want to add a column, which meets the follwing If condition.
  
  Return_code = 0, then the column is 'USER CORRECTLY CONNECTED ON' and
  If return_code = 1017, then the column displays "USER NOT CORRECTLY CONNECTED ON".
  
  
  can someone please help with this?
  
  Edited by: shipon_97 14 December 2008 13:28

  A CASE statement is probably the easiest option

  select username,
         to_char(timestamp,'MM/DD/YY HH24:MI') Timestamp,
         obj_name,
         returncode,
         action_name,
         (CASE WHEN return_code = 0 THEN 'User logged in successfully'
               WHEN return_code = 1017 THEN 'User specified an invalid password'
               ELSE 'User failed to log in for some other reason'
               END) reason_desc
    from dba_audit_trail
   where action_name in ('LOGON','LOGOFF')
   order by timestamp desc
  

  Note that any nonzero return code indicates a failed to connect. ORA-01017 indicates an invalid user name or password, which is probably the most common error.

  Justin