Please help me write this SQL query...

Hi everyone,

Please help me in this query.
A patient can multiple types of Adresses (types P,M,D).If they have all the 3 types i need to select type: p and
if they have (M and D) i need to select type M,and if they have only type D i have to select that.
For each address i need to validate whether that particular address is valid or not (by start date and end date and valid flag)

Patient table
=============

Patient_id          First_name    last_name

1                   sanjay        kumar
2                   ajay          singh
3                   Mike          John


Adress table
============

address_id       patient_id       adresss       city       type       startdate        enddate      valid_flg

1                   1             6222         dsadsa           P          01/01/2007       01/01/2010
2                   1             63333        dsad             M          01/02/2006       01/01/2007      N
3                   1             64564         fdf              M          01/01/2008       07/01/2009      
4                   1             654757       fsdfsa          D          01/02/2008       09/10/2009  
5                   2             fsdfsd       fsdfsd            M          01/03/2007       09/10/2009   
6                   2             jhkjk        dsad              D          01/01/2007       10/10/2010   
7                   3             asfd         sfds               D          01/02/2008       10/10/2009      


output
=====

1        sanjay       kumar            6222       dsadsa      P          01/01/2007        01/01/2010     
2        ajay         singh            fsdfsd     fsdfsd       M          01/03/2007        09/10/2009 
3        mike         john              asfd       sfds        D          01/02/2008        10/10/2009
Thanks in advance
Phani

Hello, Fabienne,.

This race for you (twisted code of Sarma):

SELECT patient_id, first_name, last_name, address, city, type, startdate, enddate
 FROM (
  SELECT a.patient_id patient_id, first_name, last_name, address, city, type, startdate, enddate,
             ROW_NUMBER() OVER (PARTITION BY p.patient_id ORDER BY CASE type WHEN 'P' THEN 1
                                                                      WHEN  'M' THEN 2
                                                                      WHEN  'D' THEN 3
                                                                    END) rn
    FROM  patient p
    JOIN  address a ON (p.patient_id = a.patient_id )
   WHERE NVL(valid_flg, 'X') != 'N'
     AND SYSDATE BETWEEN startdate AND  NVL(enddate, SYSDATE)
     )
WHERE rn = 1;

Edit, currently in the trial:

With Patient AS (
SELECT 1  Patient_id , 'sanjay' First_name, 'kumar'  last_name FROM DUAL UNION ALL
SELECT 2, 'ajay', 'singh' FROM DUAL UNION ALL
SELECT 3, 'Mike', 'John' FROM DUAL),
Address AS (
SELECT 1   address_id, 1  patient_id, '6222'    address, 'dsadsa'   city, 'P'  type, to_date('01/01/2007', 'DD/MM/YYYY')  startdate, to_date('01/01/2010', 'DD/MM/YYYY')  enddate, NULL  valid_flg FROM DUAL UNION ALL
SELECT 2,1,'63333','dsad','M', to_date('01/02/2006', 'DD/MM/YYYY'), to_date('01/01/2007', 'DD/MM/YYYY'),  ' N'  FROM DUAL UNION ALL
SELECT 3,1,'64564','fdf','M', to_date('01/01/2008', 'DD/MM/YYYY'), to_date('07/01/2009', 'DD/MM/YYYY'), NULL  FROM DUAL UNION ALL
SELECT 4,1,'654757','fsdfsa','D', to_date('01/02/2008', 'DD/MM/YYYY'), to_date('09/10/2009', 'DD/MM/YYYY'),  NULL  FROM DUAL UNION ALL
SELECT 5,2,'fsdfsd ','fsdfsd','M', to_date('01/03/2007', 'DD/MM/YYYY'), to_date('09/10/2009', 'DD/MM/YYYY'), NULL  FROM DUAL UNION ALL
SELECT 6,2,' jhkjk','dsad','D', to_date('01/01/2007', 'DD/MM/YYYY'), to_date('10/10/2010', 'DD/MM/YYYY'),  NULL  FROM DUAL UNION ALL
SELECT 7,3,'asfd',' sfds',' D', to_date('01/02/2008', 'DD/MM/YYYY'), to_date('10/10/2009', 'DD/MM/YYYY'),  NULL  FROM DUAL)
-- end test data
 SELECT patient_id, first_name, last_name, address, city, type, startdate, enddate
 FROM (
  SELECT a.patient_id patient_id, first_name, last_name, address, city, type, startdate, enddate,
             ROW_NUMBER() OVER (PARTITION BY p.patient_id ORDER BY CASE type WHEN 'P' THEN 1
                                                                      WHEN  'M' THEN 2
                                                                      WHEN  'D' THEN 3
                                                                    END) rn
    FROM  patient p
    JOIN  address a ON (p.patient_id = a.patient_id )
   WHERE NVL(valid_flg, 'X') != 'N'
     AND SYSDATE BETWEEN startdate AND  NVL(enddate, SYSDATE)
     )
WHERE rn = 1; 

PATIENT_ID FIRST_ LAST_ ADDRESS CITY   TY STARTDATE ENDDATE
---------- ------ ----- ------- ------ -- --------- ---------
         1 sanjay kumar 6222    dsadsa P  01-JAN-07 01-JAN-10
         2 ajay   singh fsdfsd  fsdfsd M  01-MAR-07 09-OCT-09
         3 Mike   John  asfd     sfds  D 01-FEB-08 10-OCT-09

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    INSERT INTO LONET (NAME, ROOT, ENTRYVALUE) VALUES ('BAG', 1683691, 'ICE');

    INSERT INTO LONET (NAME, ROOT, ENTRYVALUE) VALUES ('PAP', 1683691, 'IKE');

    INSERT INTO LONET (NAME, ROOT, ENTRYVALUE) VALUES ('NAM', 1686291, "QTY");

    INSERT INTO LONET (NAME, ROOT, ENTRYVALUE) VALUES ('PAP', 1686291, 'MAX');

    INSERT INTO LONET (NAME, ROOT, ENTRYVALUE) VALUES ("GAC", 1684994, "MTE");

    INSERT INTO LONET (NAME, ROOT, ENTRYVALUE) VALUES ('PAP', 1684994, 'MAC');

    INSERT INTO LONET (NAME, ROOT, ENTRYVALUE) VALUES ('FMT', 1684994, 'NICE');

    INSERT INTO LONET (NAME, ROOT, ENTRYVALUE) VALUES ('FMR', 1684994, 'RAY');

    INSERT INTO LONET (NAME, ROOT, ENTRYVALUE) VALUES ('BAG', 1686296, "CAQ");

    INSERT INTO LONET (NAME, ROOT, ENTRYVALUE) VALUES ("PAP", 1686296, "QAQ");

    INSERT INTO LONET (NAME, ROOT, ENTRYVALUE) VALUES ("VANESSA", 1686296, "THEW");

    INSERT INTO LONET (NAME, ROOT, ENTRYVALUE) VALUES ("ANDR", 1686296, "REYL");

    commit;

    Link: activity.project_wid = lonet.root

    look like output

    Project_wid Project_no NAME GAC NAM BAG RAC
    16836911000712-121LDELMELCELKE
    16849941000812-122MTEnullnullMAC
    16862961000912-123nullnullCAQQAQ
    2225222904012-124nullnullnullnull

    two problems, in that I am running

    1. I dono how simply we can convert rows to columns

    2. for root = 1683691, there are double NAM and RAC in lonet table... ideally these data should not be there, but since its here, we can take a MAX so that it returns a value

    3. There are undesirables who should be ignored

    Once again my thought process is that we join the activity and 4 alias table lonet.

    ask for your help in this

    Thank you

    Hello

    This is called pivoting.

    Here's a way to do it:

    WITH relevant_data AS

    (

    SELECT a.project_wid, a.project_no, b.SID

    , l.name AS lonet_name, l.entryvalue

    Activity one

    LEFT OUTER JOIN lonet l.root = a.project_wid l

    )

    SELECT *.

    OF relevant_data

    PIVOT (MAX (entryvalue)

    FOR lonet_name IN ("GAC" IN the gac

    "NAM" AS nam

    'BAG' IN the bag

    "RAC" AS cars

    )

    )

    ORDER BY project_wid

    ;

    Output:

    PROJECT_WID PROJECT_NO GAC NAM BAG RAC NAME

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

    1683691 12 - 10007 121 LDE LME LCE LKE

    1684994 MAC MTE 10008 12-122

    1686296 12 - 10009 123 QAC QAQ

    2225222 9040 12 - 124

    To learn more about swivel, see the FAQ in the Forum: Re: 4. How can I convert rows to columns?

    Thanks for posting the CREATE TABLE and INSERT statements; It's very useful!

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