Help needed for writing query

help needed for writing query
i have the following tables(with data) as mentioned below
FK*-foregin key (SUBJECTS)
FK**-foregin key (COMBINATION)
1)SUBJECTS(table name)     
SUB_ID(NUMBER) SUB_CODE(VARCHAR2) SUB_NAME (VARCHAR2)
2           02           Computer Science
3           03           Physics
4           04           Chemistry
5           05           Mathematics
7           07           Commerce
8           08           Computer Applications
9           09           Biology
2)COMBINATION
COMB_ID(NUMBER) COMB_NAME(VARCHAR2) SUB_ID1(NUMBER(FK*)) SUB_ID2(NUMBER(FK*)) SUB_ID3(NUMBER(FK*)) SUBJ_ID4(NUMBER(FK*))
383           S1      9           4           2           3
384           S2      4           2           5           3
---------I actually designed the ABOVE table also like this
3) a)COMBINATION
COMB_ID(NUMBER) COMB_NAME(VARCHAR2)
383           S1
384           S2
b)COMBINATION_DET
COMBDET_ID(NUMBER) COMB_ID(FK**) SUB_ID(FK*)
1               383          9
2               383          4
3               383          2
4               383          3
5               384          4
6               384          2          
7               384          5
8               384          3
Business rule: a combination consists of a maximum of 4 subjects (must contain)
and the user is less relevant to a COMB_NAME(name of combinations) but user need
the subjects contained in combinations
i need the following output
COMB_ID COMB_NAME SUBJECT1 SUBJECT2      SUBJECT3      SUBJECT4
383     S1     Biology Chemistry      Computer Science Physics
384     S2     Chemistry Computer Science Mathematics Physics
or even this is enough(what i actually needed)
COMB_ID     subjects
383           Biology,Chemistry,Computer Science,Physics
384           Chemistry,Computer Science,Mathematics,Physics
you can use any of the COMBINATION table(either (2) or (3))
and i want to know
1)which design is good in this case
(i think SUB_ID1,SUB_ID2,SUB_ID3,SUB_ID4 is not a
good method to link with same table but if 4 subjects only(and must) comes
detail table is not neccessary )
now i am achieving the result by program-coding in C# after getting the rows from oracle
i am using oracle 9i (also ODP.NET)
i want to know how can i get the result in the stored procedure itsef.
2)how it could be designed in any other way.
any help/suggestion is welcome
thanks for your time --Pradeesh

Well I forgot the table-alias, here now with:
SELECT C.COMB_ID
, C.COMB_NAME
, (SELECT SUB_NAME
FROM SUBJECTS
WHERE SUB_ID = C.SUB_ID1) AS SUBJECT_NAME1
, (SELECT SUB_NAME
FROM SUBJECTS
WHERE SUB_ID = C.SUB_ID2) AS SUBJECT_NAME2
, (SELECT SUB_NAME
FROM SUBJECTS
WHERE SUB_ID = C.SUB_ID3) AS SUBJECT_NAME3
, (SELECT SUB_NAME
FROM SUBJECTS
WHERE SUB_ID = C.SUB_ID4) AS SUBJECT_NAME4
FROM COMBINATION C;
As you need exactly 4 subjects, the columns-solution is just fine I would say.

Similar Messages

  • Help needed in writing query

    Hi,
    Could anyone help me in writing below query without syntax errors.
    I tried but no luck
    select xmlelement("g", XMLATTRIBUTES(g.contentgroup_id as "id",g.groupname as "label",
    (select xmlagg(xmlelement ("c",XMLATTRIBUTES(c.title as "title",c.content_id as "id")))) as "A"))
    as "A" from
    (SELECT g.contentgroup_id AS id, g.groupname AS label, c.title AS label, c.content_id AS id
    FROM content_ec c FULL OUTER JOIN contentgroup_ec g ON c.group_id = g.contentgroup_id
    oRDER BY g.groupname ,c.title ASC );
    Any help really appreciated.
    Thanks

    Few tips to get your question answered here
    1. Give your database version. Some thing that does not work in one version works fine in the next. And 8i,9i or 10g is not version. best way to give the version is to query your v$version table like this.
    SQL> select * from v$version where rownum = 1
      2  /
    BANNER
    Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - Prod2. You should understand we don't have what you have, meaning you should provide your data structure and some sample data for us to help.
    3. "I got an error"... "Its not working"... and the list goes on. Sentences like this does not help. If you got a error past the entire error. If stuff does not work, tell us the details.
    4. Just don't throw some output and say i want it. Please explain to every one how you derive it.
    5. And the most important thing. Use \...\ tag to format. Please.. Please.. Please.. use it. It helps every one a lot. When you use it your SQL looks some thing like this.
    SELECT xmlelement("g", XMLATTRIBUTES(g.contentgroup_id as "id",g.groupname as "label",
         (select xmlagg(xmlelement ("c",XMLATTRIBUTES(c.title as "title",c.content_id as "id")))) as "A")) as "A"
       FROM (SELECT g.contentgroup_id AS id,
                 g.groupname AS label,
                 c.title AS label,
                 c.content_id AS id
            FROM content_ec c
            FULL OUTER JOIN contentgroup_ec g
              ON c.group_id = g.contentgroup_id
           ORDER BY g.groupname ,c.title ASC );6. And also do search this forum. Most of your my queries are answered by simple search.
    Thanks,
    Karthick.

  • Help needed for writing a Query.

    I want to write a query in SSRS, SQL Server 2012, Report Builder 3.0. There is 3 tables as follows
    Table A
    ID Name
    1 AAAAA
    2 BBBBB
    Table B
    ID BS
    1 5000
    2 3000
    Table C
    ID Allowance
    Amt
    1 HRA
    500
    1 TA
    200
    2 HRA
    300
    Output Expected
    ID Name
    BS HRA
    TA
    1 AAAAA
    5000 500
    200
    2 BBBBB
    3000 300
    0
    Shareef

    This is the result from the above code: 
    id          Name       BS          Allowance   TA
    1           AAAAA      5000        500         200
    2           BBBBB      3000        300         0
    Please mark this reply as answer if it solved your issue or vote as helpful if it helped.
     [Blog]
    But I am getting something like this.
    id          
    Name       BS         Allowance TA
    1          
    AAAAA      5000        500         
    1          
    AAAAA 
    200
    2           BBBBB
         3000        300         0
    Shareef

  • Help needed for SQL query

    hello ,
    I am a beginner in terms of writing sql queries. I hope some body can help me out.
    I have two tables
    mysql> desc user_group_t;
    ---------------------------------------------------+
    | Field | Type | Null | Key | Default | Extra |
    ---------------------------------------------------+
    | userAccountId | char(8) | | PRI | | |
    | groupId | char(8) | | PRI | | |
    ---------------------------------------------------+
    2 rows in set (0.00 sec)
    mysql> desc group_t;
    ---------------------------------------------------+
    | Field | Type | Null | Key | Default | Extra |
    ---------------------------------------------------+
    | id | char(8) | | PRI | | |
    | name | char(50) | YES | | NULL | |
    | email | char(100) | YES | | NULL | |
    | description | char(254) | YES | | NULL | |
    | parentId | char(8) | YES | | NULL | |
    | creatorId | char(8) | YES | | NULL | |
    | createDate | char(20) | YES | | NULL | |
    | updateDate | char(20) | YES | | NULL | |
    | updatorId | char(8) | YES | | NULL | |
    ---------------------------------------------------+
    9 rows in set (0.00 sec)
    what I want is list of all groups with id,name and #of members(which is the # of rows in the user_group_t for any given id). Importantly I need the groups with 0 members also to be listed. In short my output should contain exactly the same number of rows as in group_t table with an additional column indicating # of members for that group.
    Any help would be greatly appreciated.
    Thanks in Advance.
    -Vasanth

    Thanks Donald,
    Actually I figured it out, with the following query:
    select id,name,sum(if(groupid is not null,1,0)) as members from group_t left join user_group_t on id=groupid group by id;
    I tried your solution, but mysql says there is an error at '+' . Anyway I modified your solution to the one below and it worked.
    select a.id, a.name, count(b.groupid) from group_t a left join user_group_t b on a.id=b.groupid group by a.id, a.name;
    I tried that before but then I used Count(*) instead of count on groupid. Your solution is elagant and I will go with yours.
    Thanks again.
    Vasanth

  • Color management help needed for adobe CS5 and Epson printer 1400-Prints coming out too dark with re

    Color management help needed for adobe CS5 and Epson printer 1400-Prints coming out too dark with reddish cast and loss of detail
    System: Windows 7
    Adobe CS5
    Printer: Epson Stylus Photo 1400
    Paper: Inkjet matte presentation paper with slight luster
    Installed latest patch for Adobe CS5
    Epson driver up to date
    After reading solutions online and trying them for my settings for 2 days I am still unable to print what I am seeing on my screen in Adobe CS5. I calibrated my monitor, but am not sure once calibration is saved if I somehow use this setting in Photoshop’s color management.
    The files I am printing are photographs of dogs with lots of detail  I digitally painted with my Wacom tablet in Photoshop CS5 and then printed with Epson Stylus 1400 on inkjet paper 20lb with slight luster.
    My Printed images lose a lot of the detail & come out way to dark with a reddish cast and loss of detail when I used these settings in the printing window:
    Color Handling: Photoshop manages color, Color management -ICM, OFF no color adjustment.
    When I change to these settings in printer window: Color Handling:  Printer manages color.  Color management- Color Controls, 1.8 Gamma and choose Epson Standard it prints lighter, but with reddish cast and very little detail and this is the best setting I have used so far.
    Based on what I have read on line, I think the issue is mainly to do with what controls are set in the Photoshop Color Settings window and the Epson Printer preferences. I have screen images attached of these windows and would appreciate knowing what you recommend I enter for each choice.
    Also I am confused as to what ICM color management system to use with this printer and CS5:
    What is the best ICM to use with PS CS5 & the Epson 1400 printer? Should I use the same ICM for both?
    Do I embed the ICM I choose into the new files I create? 
    Do I view all files in the CS5 workspace in this default ICM?
    Do I set my monitor setting to the same ICM?
    If new file opens in CS5 workspace and it has a different embedded profile than my workspace, do I convert it?
    Do I set my printer, Monitor and PS CS5 color settings to the same ICM?
    Is using the same ICM for all devices what is called a consistent workflow?
    I appreciate any and all advice that can be sent my way on this complicated issue. Thank you in advance for your time and kind help.

    It may be possible to figure out by watching a Dr.Brown video on the subject of color printing. Adobe tv
    I hope this may help...............

  • File missing (file\BCD error code 0Xc0000034 help need for work!

    file missing (file\BCD  error code 0Xc0000034 help need for work!    what can i do?
    have an p 2000 notebook pc

     Hi bobkunkle, welcome to the HP Forums. I understand you cannot boot passed the error you are receiving.
    What is the model or product number of your notebook? What version of Windows is installed?
    Guide to finding your product number
    Which Windows operating system am I running?
    TwoPointOh
    I work on behalf of HP
    Please click “Accept as Solution ” if you feel my post solved your issue, it will help others find the solution.
    Click the “Kudos, Thumbs Up" on the bottom to say “Thanks” for helping!

  • Help me for writing the password script on solaris

    hi,
    help me for writing password scripts to change the user/root password.
    in the script itself myself want to mention the new password.
    now user want to login with the new password only.
    model script:
    echo $test:`perl -e '$x=crypt('$test123','test');
                   print $x'`::::::: >> /etc/shadow
    test--->username
    test123---->new password.
    the above script is not working.
    kindly help me for writing the script.
    Regards,
    raja

    Well. For one thing, if you just append the new password to the /etc/shadow file there will be two entries for the user in that file (at least if the user already had a password). Which probably is a bad thing.

  • Help need for force to signout All session ! how...

    hi
         help need for force to  signout All session !  how ??
    Solved!
    Go to Solution.

    Hi and welcome to the Skype Community,
    To force a signout of all instances your Skype is signed into please change your password: https://support.skype.com/en/faq/FA95/how-do-i-change-my-password
    Follow the latest Skype Community News
    ↓ Did my reply answer your question? Accept it as a solution to help others, Thanks. ↓

  • Query help needed for querybuilder to use with lcm cli

    Hi,
    I had set up several queries to run with the lcm cli in order to back up personal folders, inboxes, etc. to lcmbiar files to use as backups.  I have seen a few posts that are similar, but I have a specific question/concern.
    I just recently had to reference one of these back ups only to find it was incomplete.  Does the query used by the lcm cli also only pull the first 1000 rows? Is there a way to change this limit somwhere?
    Also, since when importing this lcmbiar file for something 'generic' like 'all personal folders', pulls in WAY too much stuff, is there a better way to limit this? I am open to suggestions, but it would almost be better if I could create individual lcmbiar output files on a per user basis.  This way, when/if I need to restore someone's personal folder contents, for example, I could find them by username and import just that lcmbiar file, as opposed to all 3000 of our users.  I am not quite sure how to accomplish this...
    Currently, with my limited windows scripting knowledge, I have set up a bat script to run each morning, that creates a 'runtime' properties file from a template, such that the lcmbiar file gets named uniquely for that day and its content.  Then I call the lcm_cli using the proper command.  The query within the properties file is currently very straightforward - select * from CI_INFOOBJECTS WHERE SI_ANCESTOR = 18.
    To do what I want to do...
    1) I'd first need a current list of usernames in a text file, that could be read (?) in and parsed to single out each user (remember we are talking about 3000) - not sure the best way to get this.
    2) Then instead of just updating the the lcmbiar file name with a unique name as I do currently, I would also update the query (which would be different altogether):  SELECT * from CI_INFOOBJECTS where SI_OWNER = '<username>' AND SI_ANCESTOR = 18.
    In theory, that would grab everything owned by that user in their personal folder - right? and write it to its own lcmbiar file to a location I specify.
    I just think chunking something like this is more effective and BO has no built in back up capability that already does this.  We are on BO 4.0 SP7 right now, move to 4.1 SP4 over the summer.
    Any thoughts on this would be much appreciated.
    thanks,
    Missy

    Just wanted to pass along that SAP Support pointed me to KBA 1969259 which had some good example queries in it (they were helping me with a concern I had over the lcmbiar file output, not with query design).  I was able to tweak one of the sample queries in this KBA to give me more of what I was after...
    SELECT TOP 10000 static, relationships, SI_PARENT_FOLDER_CUID, SI_OWNER, SI_PATH FROM CI_INFOOBJECTS,CI_APPOBJECTS,CI_SYSTEMOBJECTS WHERE (DESCENDENTS ("si_name='Folder Hierarchy'","si_name='<username>'"))
    This exports inboxes, personal folders, categories, and roles, which is more than I was after, but still necessary to back up.. so in a way, it is actually better because I have one lcmbiar file per user - contains all their 'personal' objects.
    So between narrowing down my set of users to only those who actually have saved things to their personal folder and now having a query that actually returns what I expect it to return, along with the help below for a job to clean up these excessive amounts of promotion jobs I am now creating... I am all set!
    Hopefully this can help someone else too!
    Thanks,
    missy

  • Pagination query help needed for large table - force a different index

    I'm using a slight modification of the pagination query from over at Ask Tom's: [http://www.oracle.com/technology/oramag/oracle/07-jan/o17asktom.html]
    Mine looks like this when fetching the first 100 rows of all members with last name Smith, ordered by join date:
    SELECT members.*
    FROM members,
        SELECT RID, rownum rnum
        FROM
            SELECT rowid as RID
            FROM members
            WHERE last_name = 'Smith'
            ORDER BY joindate
        WHERE rownum <= 100
    WHERE rnum >= 1
             and RID = members.rowidThe difference between this and the one at Ask Tom's is that my innermost query just returns the ROWID. Then in the outermost query we join the ROWIDs returned to the members table, after we have pruned the ROWIDs down to only the chunk of 100 we want. This makes it MUCH faster (verifiably) on our large tables, as it is able to use the index on the innermost query (well... read on).
    The problem I have is this:
    SELECT rowid as RID
    FROM members
    WHERE last_name = 'Smith'
    ORDER BY joindateThis will use the index for the predicate column (last_name) instead of the unique index I have defined for the joindate column (joindate, sequence). (Verifiable with explain plan). It is much slower this way on a large table. So I can hint it using either of the following methods:
    SELECT /*+ index(members, joindate_idx) */ rowid as RID
    FROM members
    WHERE last_name = 'Smith'
    ORDER BY joindate
    SELECT /*+ first_rows(100) */ rowid as RID
    FROM members
    WHERE last_name = 'Smith'
    ORDER BY joindateEither way, it now uses the index of the ORDER BY column (joindate_idx), so now it is much faster as it does not have to do a sort (remember, VERY large table, millions of records). So that seems good. But now, on my outermost query, I join the rowid with the meaningful columns of data from the members table, as commented below:
    SELECT members.*      -- Select all data from members table
    FROM members,           -- members table added to FROM clause
        SELECT RID, rownum rnum
        FROM
            SELECT /*+ index(members, joindate_idx) */ rowid as RID   -- Hint is ignored now that I am joining in the outer query
            FROM members
            WHERE last_name = 'Smith'
            ORDER BY joindate
        WHERE rownum <= 100
    WHERE rnum >= 1
            and RID = members.rowid           -- Merge the members table on the rowid we pulled from the inner queriesOnce I do this join, it goes back to using the predicate index (last_name) and has to perform the sort once it finds all matching values (which can be a lot in this table, there is high cardinality on some columns).
    So my question is, in the full query above, is there any way I can get it to use the ORDER BY column for indexing to prevent it from having to do a sort? The join is what causes it to revert back to using the predicate index, even with hints. Remove the join and just return the ROWIDs for those 100 records and it flies, even on 10 million records.
    It'd be great if there was some generic hint that could accomplish this, such that if we change the table/columns/indexes, we don't need to change the hint (the FIRST_ROWS hint is a good example of this, while the INDEX hint is the opposite), but any help would be appreciated. I can provide explain plans for any of the above if needed.
    Thanks!

    Lakmal Rajapakse wrote:
    OK here is an example to illustrate the advantage:
    SQL> set autot traceonly
    SQL> select * from (
    2  select a.*, rownum x  from
    3  (
    4  select a.* from aoswf.events a
    5  order by EVENT_DATETIME
    6  ) a
    7  where rownum <= 1200
    8  )
    9  where x >= 1100
    10  /
    101 rows selected.
    Execution Plan
    Plan hash value: 3711662397
    | Id  | Operation                      | Name       | Rows  | Bytes | Cost (%CPU)| Time     |
    |   0 | SELECT STATEMENT               |            |  1200 |   521K|   192   (0)| 00:00:03 |
    |*  1 |  VIEW                          |            |  1200 |   521K|   192   (0)| 00:00:03 |
    |*  2 |   COUNT STOPKEY                |            |       |       |            |          |
    |   3 |    VIEW                        |            |  1200 |   506K|   192   (0)| 00:00:03 |
    |   4 |     TABLE ACCESS BY INDEX ROWID| EVENTS     |   253M|    34G|   192   (0)| 00:00:03 |
    |   5 |      INDEX FULL SCAN           | EVEN_IDX02 |  1200 |       |     2   (0)| 00:00:01 |
    Predicate Information (identified by operation id):
    1 - filter("X">=1100)
    2 - filter(ROWNUM<=1200)
    Statistics
    0  recursive calls
    0  db block gets
    443  consistent gets
    0  physical reads
    0  redo size
    25203  bytes sent via SQL*Net to client
    281  bytes received via SQL*Net from client
    8  SQL*Net roundtrips to/from client
    0  sorts (memory)
    0  sorts (disk)
    101  rows processed
    SQL>
    SQL>
    SQL> select * from aoswf.events a, (
    2  select rid, rownum x  from
    3  (
    4  select rowid rid from aoswf.events a
    5  order by EVENT_DATETIME
    6  ) a
    7  where rownum <= 1200
    8  ) b
    9  where x >= 1100
    10  and a.rowid = rid
    11  /
    101 rows selected.
    Execution Plan
    Plan hash value: 2308864810
    | Id  | Operation                   | Name       | Rows  | Bytes | Cost (%CPU)| Time     |
    |   0 | SELECT STATEMENT            |            |  1200 |   201K|   261K  (1)| 00:52:21 |
    |   1 |  NESTED LOOPS               |            |  1200 |   201K|   261K  (1)| 00:52:21 |
    |*  2 |   VIEW                      |            |  1200 | 30000 |   260K  (1)| 00:52:06 |
    |*  3 |    COUNT STOPKEY            |            |       |       |            |          |
    |   4 |     VIEW                    |            |   253M|  2895M|   260K  (1)| 00:52:06 |
    |   5 |      INDEX FULL SCAN        | EVEN_IDX02 |   253M|  4826M|   260K  (1)| 00:52:06 |
    |   6 |   TABLE ACCESS BY USER ROWID| EVENTS     |     1 |   147 |     1   (0)| 00:00:01 |
    Predicate Information (identified by operation id):
    2 - filter("X">=1100)
    3 - filter(ROWNUM<=1200)
    Statistics
    8  recursive calls
    0  db block gets
    117  consistent gets
    0  physical reads
    0  redo size
    27539  bytes sent via SQL*Net to client
    281  bytes received via SQL*Net from client
    8  SQL*Net roundtrips to/from client
    0  sorts (memory)
    0  sorts (disk)
    101  rows processed
    Lakmal (and OP),
    Not sure what advantage you are trying to show here. But considering that we are talking about pagination query here and order of records is important, your 2 queries will not always generate output in same order. Here is the test case:
    SQL> select * from v$version ;
    BANNER
    Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - Prod
    PL/SQL Release 10.2.0.1.0 - Production
    CORE     10.2.0.1.0     Production
    TNS for Linux: Version 10.2.0.1.0 - Production
    NLSRTL Version 10.2.0.1.0 - Production
    SQL> show parameter optimizer
    NAME                                 TYPE        VALUE
    optimizer_dynamic_sampling           integer     2
    optimizer_features_enable            string      10.2.0.1
    optimizer_index_caching              integer     0
    optimizer_index_cost_adj             integer     100
    optimizer_mode                       string      ALL_ROWS
    optimizer_secure_view_merging        boolean     TRUE
    SQL> show parameter pga
    NAME                                 TYPE        VALUE
    pga_aggregate_target                 big integer 103M
    SQL> create table t nologging as select * from all_objects where 1 = 2 ;
    Table created.
    SQL> create index t_idx on t(last_ddl_time) nologging ;
    Index created.
    SQL> insert /*+ APPEND */ into t (owner, object_name, object_id, created, last_ddl_time) select owner, object_name, object_id, created, sysdate - dbms_random.value(1, 100) from all_objects order by dbms_random.random;
    40617 rows created.
    SQL> commit ;
    Commit complete.
    SQL> exec dbms_stats.gather_table_stats(user, 'T', cascade=>true);
    PL/SQL procedure successfully completed.
    SQL> select object_id, object_name, created from t, (select rid, rownum rn from (select rowid rid from t order by created desc) where rownum <= 1200) t1 where rn >= 1190 and t.rowid = t1.rid ;
    OBJECT_ID OBJECT_NAME                    CREATED
         47686 ALL$OLAP2_JOIN_KEY_COLUMN_USES 28-JUL-2009 08:08:39
         47672 ALL$OLAP2_CUBE_DIM_USES        28-JUL-2009 08:08:39
         47681 ALL$OLAP2_CUBE_MEASURE_MAPS    28-JUL-2009 08:08:39
         47682 ALL$OLAP2_FACT_LEVEL_USES      28-JUL-2009 08:08:39
         47685 ALL$OLAP2_AGGREGATION_USES     28-JUL-2009 08:08:39
         47692 ALL$OLAP2_CATALOGS             28-JUL-2009 08:08:39
         47665 ALL$OLAPMR_FACTTBLKEYMAPS      28-JUL-2009 08:08:39
         47688 ALL$OLAP2_DIM_LEVEL_ATTR_MAPS  28-JUL-2009 08:08:39
         47689 ALL$OLAP2_DIM_LEVELS_KEYMAPS   28-JUL-2009 08:08:39
         47669 ALL$OLAP9I2_HIER_DIMENSIONS    28-JUL-2009 08:08:39
         47666 ALL$OLAP9I1_HIER_DIMENSIONS    28-JUL-2009 08:08:39
    11 rows selected.
    SQL> select object_id, object_name, last_ddl_time from t, (select rid, rownum rn from (select rowid rid from t order by last_ddl_time desc) where rownum <= 1200) t1 where rn >= 1190 and t.rowid = t1.rid ;
    OBJECT_ID OBJECT_NAME                    LAST_DDL_TIME
         11749 /b9fe5b99_OraRTStatementComman 06-FEB-2010 03:43:49
         13133 oracle/jdbc/driver/OracleLog$3 06-FEB-2010 03:45:44
         37534 com/sun/mail/smtp/SMTPMessage  06-FEB-2010 03:46:14
         36145 /4e492b6f_SerProfileToClassErr 06-FEB-2010 03:11:09
         26815 /7a628fb8_DefaultHSBChooserPan 06-FEB-2010 03:26:55
         16695 /2940a364_RepIdDelegator_1_3   06-FEB-2010 03:38:17
         36539 sun/io/ByteToCharMacHebrew     06-FEB-2010 03:28:57
         14044 /d29b81e1_OldHeaders           06-FEB-2010 03:12:12
         12920 /25f8f3a5_BasicSplitPaneUI     06-FEB-2010 03:11:06
         42266 SI_GETCLRHSTGRFTR              06-FEB-2010 03:40:20
         15752 /2f494dce_JDWPThreadReference  06-FEB-2010 03:09:31
    11 rows selected.
    SQL> select object_id, object_name, last_ddl_time from (select t1.*, rownum rn from (select * from t order by last_ddl_time desc) t1 where rownum <= 1200) where rn >= 1190 ;
    OBJECT_ID OBJECT_NAME                    LAST_DDL_TIME
         37534 com/sun/mail/smtp/SMTPMessage  06-FEB-2010 03:46:14
         13133 oracle/jdbc/driver/OracleLog$3 06-FEB-2010 03:45:44
         11749 /b9fe5b99_OraRTStatementComman 06-FEB-2010 03:43:49
         42266 SI_GETCLRHSTGRFTR              06-FEB-2010 03:40:20
         16695 /2940a364_RepIdDelegator_1_3   06-FEB-2010 03:38:17
         36539 sun/io/ByteToCharMacHebrew     06-FEB-2010 03:28:57
         26815 /7a628fb8_DefaultHSBChooserPan 06-FEB-2010 03:26:55
         14044 /d29b81e1_OldHeaders           06-FEB-2010 03:12:12
         36145 /4e492b6f_SerProfileToClassErr 06-FEB-2010 03:11:09
         12920 /25f8f3a5_BasicSplitPaneUI     06-FEB-2010 03:11:06
         15752 /2f494dce_JDWPThreadReference  06-FEB-2010 03:09:31
    11 rows selected.
    SQL> select object_id, object_name, last_ddl_time from t, (select rid, rownum rn from (select rowid rid from t order by last_ddl_time desc) where rownum <= 1200) t1 where rn >= 1190 and t.rowid = t1.rid order by last_ddl_time desc ;
    OBJECT_ID OBJECT_NAME                    LAST_DDL_TIME
         37534 com/sun/mail/smtp/SMTPMessage  06-FEB-2010 03:46:14
         13133 oracle/jdbc/driver/OracleLog$3 06-FEB-2010 03:45:44
         11749 /b9fe5b99_OraRTStatementComman 06-FEB-2010 03:43:49
         42266 SI_GETCLRHSTGRFTR              06-FEB-2010 03:40:20
         16695 /2940a364_RepIdDelegator_1_3   06-FEB-2010 03:38:17
         36539 sun/io/ByteToCharMacHebrew     06-FEB-2010 03:28:57
         26815 /7a628fb8_DefaultHSBChooserPan 06-FEB-2010 03:26:55
         14044 /d29b81e1_OldHeaders           06-FEB-2010 03:12:12
         36145 /4e492b6f_SerProfileToClassErr 06-FEB-2010 03:11:09
         12920 /25f8f3a5_BasicSplitPaneUI     06-FEB-2010 03:11:06
         15752 /2f494dce_JDWPThreadReference  06-FEB-2010 03:09:31
    11 rows selected.
    SQL> set autotrace traceonly
    SQL> select object_id, object_name, last_ddl_time from t, (select rid, rownum rn from (select rowid rid from t order by last_ddl_time desc) where rownum <= 1200) t1 where rn >= 1190 and t.rowid = t1.rid order by last_ddl_time desc
      2  ;
    11 rows selected.
    Execution Plan
    Plan hash value: 44968669
    | Id  | Operation                       | Name  | Rows  | Bytes | Cost (%CPU)| Time     |
    |   0 | SELECT STATEMENT                |       |  1200 | 91200 |   180   (2)| 00:00:03 |
    |   1 |  SORT ORDER BY                  |       |  1200 | 91200 |   180   (2)| 00:00:03 |
    |*  2 |   HASH JOIN                     |       |  1200 | 91200 |   179   (2)| 00:00:03 |
    |*  3 |    VIEW                         |       |  1200 | 30000 |    98   (0)| 00:00:02 |
    |*  4 |     COUNT STOPKEY               |       |       |       |            |          |
    |   5 |      VIEW                       |       | 40617 |   475K|    98   (0)| 00:00:02 |
    |   6 |       INDEX FULL SCAN DESCENDING| T_IDX | 40617 |   793K|    98   (0)| 00:00:02 |
    |   7 |    TABLE ACCESS FULL            | T     | 40617 |  2022K|    80   (2)| 00:00:01 |
    Predicate Information (identified by operation id):
       2 - access("T".ROWID="T1"."RID")
       3 - filter("RN">=1190)
       4 - filter(ROWNUM<=1200)
    Statistics
              1  recursive calls
              0  db block gets
            348  consistent gets
              0  physical reads
              0  redo size
           1063  bytes sent via SQL*Net to client
            385  bytes received via SQL*Net from client
              2  SQL*Net roundtrips to/from client
              1  sorts (memory)
              0  sorts (disk)
             11  rows processed
    SQL> select object_id, object_name, last_ddl_time from (select t1.*, rownum rn from (select * from t order by last_ddl_time desc) t1 where rownum <= 1200) where rn >= 1190 ;
    11 rows selected.
    Execution Plan
    Plan hash value: 882605040
    | Id  | Operation                | Name | Rows  | Bytes | Cost (%CPU)| Time     |
    |   0 | SELECT STATEMENT         |      |  1200 | 62400 |    80   (2)| 00:00:01 |
    |*  1 |  VIEW                    |      |  1200 | 62400 |    80   (2)| 00:00:01 |
    |*  2 |   COUNT STOPKEY          |      |       |       |            |          |
    |   3 |    VIEW                  |      | 40617 |  1546K|    80   (2)| 00:00:01 |
    |*  4 |     SORT ORDER BY STOPKEY|      | 40617 |  2062K|    80   (2)| 00:00:01 |
    |   5 |      TABLE ACCESS FULL   | T    | 40617 |  2062K|    80   (2)| 00:00:01 |
    Predicate Information (identified by operation id):
       1 - filter("RN">=1190)
       2 - filter(ROWNUM<=1200)
       4 - filter(ROWNUM<=1200)
    Statistics
              0  recursive calls
              0  db block gets
            343  consistent gets
              0  physical reads
              0  redo size
           1063  bytes sent via SQL*Net to client
            385  bytes received via SQL*Net from client
              2  SQL*Net roundtrips to/from client
              1  sorts (memory)
              0  sorts (disk)
             11  rows processed
    SQL> select object_id, object_name, last_ddl_time from t, (select rid, rownum rn from (select rowid rid from t order by last_ddl_time desc) where rownum <= 1200) t1 where rn >= 1190 and t.rowid = t1.rid ;
    11 rows selected.
    Execution Plan
    Plan hash value: 168880862
    | Id  | Operation                      | Name  | Rows  | Bytes | Cost (%CPU)| Time     |
    |   0 | SELECT STATEMENT               |       |  1200 | 91200 |   179   (2)| 00:00:03 |
    |*  1 |  HASH JOIN                     |       |  1200 | 91200 |   179   (2)| 00:00:03 |
    |*  2 |   VIEW                         |       |  1200 | 30000 |    98   (0)| 00:00:02 |
    |*  3 |    COUNT STOPKEY               |       |       |       |            |          |
    |   4 |     VIEW                       |       | 40617 |   475K|    98   (0)| 00:00:02 |
    |   5 |      INDEX FULL SCAN DESCENDING| T_IDX | 40617 |   793K|    98   (0)| 00:00:02 |
    |   6 |   TABLE ACCESS FULL            | T     | 40617 |  2022K|    80   (2)| 00:00:01 |
    Predicate Information (identified by operation id):
       1 - access("T".ROWID="T1"."RID")
       2 - filter("RN">=1190)
       3 - filter(ROWNUM<=1200)
    Statistics
              0  recursive calls
              0  db block gets
            349  consistent gets
              0  physical reads
              0  redo size
           1063  bytes sent via SQL*Net to client
            385  bytes received via SQL*Net from client
              2  SQL*Net roundtrips to/from client
              0  sorts (memory)
              0  sorts (disk)
             11  rows processed
    SQL> select object_id, object_name, last_ddl_time from (select t1.*, rownum rn from (select * from t order by last_ddl_time desc) t1 where rownum <= 1200) where rn >= 1190 order by last_ddl_time desc ;
    11 rows selected.
    Execution Plan
    Plan hash value: 882605040
    | Id  | Operation           | Name | Rows     | Bytes | Cost (%CPU)| Time     |
    |   0 | SELECT STATEMENT      |     |  1200 | 62400 |    80   (2)| 00:00:01 |
    |*  1 |  VIEW                |     |  1200 | 62400 |    80   (2)| 00:00:01 |
    |*  2 |   COUNT STOPKEY       |     |     |     |          |          |
    |   3 |    VIEW            |     | 40617 |  1546K|    80   (2)| 00:00:01 |
    |*  4 |     SORT ORDER BY STOPKEY|     | 40617 |  2062K|    80   (2)| 00:00:01 |
    |   5 |      TABLE ACCESS FULL      | T     | 40617 |  2062K|    80   (2)| 00:00:01 |
    Predicate Information (identified by operation id):
       1 - filter("RN">=1190)
       2 - filter(ROWNUM<=1200)
       4 - filter(ROWNUM<=1200)
    Statistics
         175  recursive calls
           0  db block gets
         388  consistent gets
           0  physical reads
           0  redo size
           1063  bytes sent via SQL*Net to client
         385  bytes received via SQL*Net from client
           2  SQL*Net roundtrips to/from client
           4  sorts (memory)
           0  sorts (disk)
          11  rows processed
    SQL> set autotrace off
    SQL> spool offAs you will see, the join query here has to have an ORDER BY clause at the end to ensure that records are correctly sorted. You can not rely on optimizer choosing NESTED LOOP join method and, as above example shows, when optimizer chooses HASH JOIN, oracle is free to return rows in no particular order.
    The query that does not involve join always returns rows in the desired order. Adding an ORDER BY does add a step in the plan for the query using join but does not affect the other query.

  • Help Needed For joins

    Hi All,
    I am new to oracle.I have a requirement. i need to display sales fields for a particular time as below.
    Time    Sales
    6-7 3333
    7-8 45345
    8-9 546
    But the min time and max time are coming from different query and sales fields coming from different.Now i need to join both queries to get the results.But there is no common column.I tried with sub query there also i am getting error.Please find the queries and help me
    Hour Group Query:
    select
    time1.*,
    (select if (time_format(dt.curr_time, '%H') <
    time_format(ifnull((SELECT prop_value FROM cust_conv_properties c where prop_key = 'DayStartingTime'), '00:00:00'), '%H'),
    date_format(date_add(dt.curr_time, INTERVAL 0 DAY),'%d/%m/%Y'),
    date_format(dt.curr_time,'%d/%m/%Y')) as curr_date
    from
    (select concat(date_format(str_to_date('23/10/2011','%d/%m/%Y'),'%Y-%m-%d'), ' ', '00:00:00') as curr_time) dt) as report_date
    from
    (select
    -- 'S' temp,
    cast(min(cchg.from_hour) as unsigned) as min_value,
    cast(max(cchg.to_hour) as unsigned) as max_value,
    concat(concat(min(cchg.from_hour),''),'-',concat(max(cchg.to_hour),'')) as time_diff
    from
    cust_conv_hour_group as cchg
    where
    cchg.group_value in (SELECT distinct if(group_value = (SELECT min(group_value) FROM cust_conv_hour_group),
    (SELECT max(group_value) FROM cust_conv_hour_group), group_value-1) as group_value
    FROM cust_conv_hour_group c where from_hour <= cast(time_format('23:00:00','%H') as unsigned)
    and
    to_hour > cast(time_format('00:00:00','%H') as unsigned))
    group by
    cchg.group_value
    ) time1
    Sales Fields Query:
    SELECT
    if(count(cons.wr_tarSale)=0,0, cons.wr_tarSale) wr_tarSale,
    if(count(cons.wr_actSale)=0,0, cons.wr_actSale) wr_actSale,
    if(count(cons.wr_tarTrans)=0,0, cons.wr_tarTrans) wr_tarTrans,
    if(count(cons.wr_actTrans)=0,0, cons.wr_actTrans) wr_actTrans,
    if(count(cons.tarSale)=0,0, cons.tarSale) tarSale,
    if(count(cons.actSale)=0,0, cons.actSale) actSale,
    if(count(cons.varSale)=0,0, cons.varSale) varSale,
    if(count(cons.tarTrans)=0,0, cons.tarTrans) tarTrans,
    if(count(cons.actTrans)=0,0, cons.actTrans) actTrans,
    if(count(cons.actAds)=0,0, cons.actAds) actAds,
    if(count(cons.actUpt)=0,0, cons.actUpt) actUpt,
    if(count(cons.tarAds)=0,0, cons.tarAds) tarAds,
    if(count(cons.tarUpt)=0,0, cons.tarUpt) tarUpt,
    if(count(cons.actConv)=0,0, cons.actConv) actConv,
    if(count(cons.tarTplh)=0,0, cons.tarTplh) tarTplh,
    if(count(cons.actBlank1)=0,0, cons.actBlank1) actBlank1,
    if(count(cons.actBlank2)=0,0, cons.actBlank2) actBlank2,
    if(count(cons.actTplh)=0,0, cons.actTplh) actTplh,
    if(count(cons.sDTarSale)=0,0, cons.sDTarSale)sDTarSale,
    if(count(cons.sDTarTrans)=0,0, cons.sDTarTrans)sDTarTrans,
    if(count(cons.sDTarQty)=0,0, cons.sDTarQty)sDTarQty,
    if(count(cons.sDTarFF)=0,0, cons.sDTarFF)sDTarFF
    FROM
    SELECT
    ifnull(sum(ccsr.target_sale),0) wr_tarSale,
    ifnull(sum(ccsr.actual_sale),0) wr_actSale,
    ifnull(sum(ccsr.actual_transaction_count),0) wr_actTrans,
    ifnull(sum(ccsr.target_transaction_count),0) wr_tarTrans,
    round(ifnull(sum(ccsr.target_sale),0),2) tarSale,
    round(ifnull(sum(ccsr.actual_sale),0),2) actSale,
    round(round(ifnull(sum(ccsr.actual_sale),0),2)- round(ifnull(sum(ccsr.target_sale),0),2),2) varSale,
    round(ifnull(sum(ccsr.actual_transaction_count),0),0) actTrans,
    round(ifnull(sum(ccsr.target_transaction_count),0),0) tarTrans,
    0 actBlank1,
    round(ifnull((sum(ccsr.actual_sale)/sum(ccsr.actual_transaction_count)),0),2) actAds,
    round(ifnull((sum(ccsr.target_sale)/sum(ccsr.target_transaction_count)),0),2) tarAds,
    round(ifnull((sum(ccsr.actual_quantity)/sum(ccsr.actual_transaction_count)),0),2) actUpt,
    round(ifnull((sum(ccsr.target_quantity)/sum(ccsr.target_transaction_count)),0),2) tarUpt,
    round(ifnull((sum(ccsr.actual_transaction_count)/sum(ccsr.actual_footfalls))*100,0),2) actConv,
    0 actBlank2,
    0 actBlank3,
    round(ifnull((sum(ccsr.actual_footfalls)/sum(ccsr.actual_man_hours)),0),2) actTplh,
    round(ifnull((sum(ccsr.target_footfalls)/sum(ccsr.target_man_hours)),0),2) tarTplh,
    round(ifnull(ccsrs.target_sale,0),2) as sDTarSale,
    round(ifnull(ccsrs.target_transaction_count,0),0) as sDTarTrans,
    ifnull(ccsrs.target_quantity,0) as sDTarQty,
    ifnull(ccsrs.target_footfalls,0) as sDTarFF
    FROM
    cust_conv_store_report ccsr
    inner join cust_conv_store_report_summary ccsrs on(ccsrs.brand_code=ccsr.brand_code and ccsrs.category=ccsr.category and
                                  ccsrs.store_date=ccsr.store_date and ccsrs.value_type=ccsr.value_type)
    WHERE
    ccsr.value_type='B' and
    ccsr.brand_code= ? AND
    ccsr.store_date = date_format(str_to_date(?,'%d/%m/%Y'),'%Y-%m-%d')
    AND HOUR((TIME(ccsr.transaction_time))) >= (?) AND HOUR((TIME(ccsr.transaction_time)))< (?)
    GROUP BY
    ccsr.brand_code
    ) cons;
    Edited by: 992887 on Mar 10, 2013 4:25 AM

    992887 wrote:
    Hi All,
    I am new to oracle.code below is NOT valid Oracle syntax.
    post results from valid Oracle SQL below
    SELECT * FROM V$VERSION;
    I have a requirement. i need to display sales fields for a particular time as below.
    Time    Sales
    6-7 3333
    7-8 45345
    8-9 546
    But the min time and max time are coming from different query and sales fields coming from different.Now i need to join both queries to get the results.But there is no common column.I tried with sub query there also i am getting error.Please find the queries and help me
    Hour Group Query:
    select
    time1.*,
    (select if (time_format(dt.curr_time, '%H') <
    time_format(ifnull((SELECT prop_value FROM cust_conv_properties c where prop_key = 'DayStartingTime'), '00:00:00'), '%H'),
    date_format(date_add(dt.curr_time, INTERVAL 0 DAY),'%d/%m/%Y'),
    date_format(dt.curr_time,'%d/%m/%Y')) as curr_date
    from
    (select concat(date_format(str_to_date('23/10/2011','%d/%m/%Y'),'%Y-%m-%d'), ' ', '00:00:00') as curr_time) dt) as report_date
    from
    (select
    -- 'S' temp,
    cast(min(cchg.from_hour) as unsigned) as min_value,
    cast(max(cchg.to_hour) as unsigned) as max_value,
    concat(concat(min(cchg.from_hour),''),'-',concat(max(cchg.to_hour),'')) as time_diff
    from
    cust_conv_hour_group as cchg
    where
    cchg.group_value in (SELECT distinct if(group_value = (SELECT min(group_value) FROM cust_conv_hour_group),
    (SELECT max(group_value) FROM cust_conv_hour_group), group_value-1) as group_value
    FROM cust_conv_hour_group c where from_hour <= cast(time_format('23:00:00','%H') as unsigned)
    and
    to_hour > cast(time_format('00:00:00','%H') as unsigned))
    group by
    cchg.group_value
    ) time1
    Sales Fields Query:
    SELECT
    if(count(cons.wr_tarSale)=0,0, cons.wr_tarSale) wr_tarSale,
    if(count(cons.wr_actSale)=0,0, cons.wr_actSale) wr_actSale,
    if(count(cons.wr_tarTrans)=0,0, cons.wr_tarTrans) wr_tarTrans,
    if(count(cons.wr_actTrans)=0,0, cons.wr_actTrans) wr_actTrans,
    if(count(cons.tarSale)=0,0, cons.tarSale) tarSale,
    if(count(cons.actSale)=0,0, cons.actSale) actSale,
    if(count(cons.varSale)=0,0, cons.varSale) varSale,
    if(count(cons.tarTrans)=0,0, cons.tarTrans) tarTrans,
    if(count(cons.actTrans)=0,0, cons.actTrans) actTrans,
    if(count(cons.actAds)=0,0, cons.actAds) actAds,
    if(count(cons.actUpt)=0,0, cons.actUpt) actUpt,
    if(count(cons.tarAds)=0,0, cons.tarAds) tarAds,
    if(count(cons.tarUpt)=0,0, cons.tarUpt) tarUpt,
    if(count(cons.actConv)=0,0, cons.actConv) actConv,
    if(count(cons.tarTplh)=0,0, cons.tarTplh) tarTplh,
    if(count(cons.actBlank1)=0,0, cons.actBlank1) actBlank1,
    if(count(cons.actBlank2)=0,0, cons.actBlank2) actBlank2,
    if(count(cons.actTplh)=0,0, cons.actTplh) actTplh,
    if(count(cons.sDTarSale)=0,0, cons.sDTarSale)sDTarSale,
    if(count(cons.sDTarTrans)=0,0, cons.sDTarTrans)sDTarTrans,
    if(count(cons.sDTarQty)=0,0, cons.sDTarQty)sDTarQty,
    if(count(cons.sDTarFF)=0,0, cons.sDTarFF)sDTarFF
    FROM
    SELECT
    ifnull(sum(ccsr.target_sale),0) wr_tarSale,
    ifnull(sum(ccsr.actual_sale),0) wr_actSale,
    ifnull(sum(ccsr.actual_transaction_count),0) wr_actTrans,
    ifnull(sum(ccsr.target_transaction_count),0) wr_tarTrans,
    round(ifnull(sum(ccsr.target_sale),0),2) tarSale,
    round(ifnull(sum(ccsr.actual_sale),0),2) actSale,
    round(round(ifnull(sum(ccsr.actual_sale),0),2)- round(ifnull(sum(ccsr.target_sale),0),2),2) varSale,
    round(ifnull(sum(ccsr.actual_transaction_count),0),0) actTrans,
    round(ifnull(sum(ccsr.target_transaction_count),0),0) tarTrans,
    0 actBlank1,
    round(ifnull((sum(ccsr.actual_sale)/sum(ccsr.actual_transaction_count)),0),2) actAds,
    round(ifnull((sum(ccsr.target_sale)/sum(ccsr.target_transaction_count)),0),2) tarAds,
    round(ifnull((sum(ccsr.actual_quantity)/sum(ccsr.actual_transaction_count)),0),2) actUpt,
    round(ifnull((sum(ccsr.target_quantity)/sum(ccsr.target_transaction_count)),0),2) tarUpt,
    round(ifnull((sum(ccsr.actual_transaction_count)/sum(ccsr.actual_footfalls))*100,0),2) actConv,
    0 actBlank2,
    0 actBlank3,
    round(ifnull((sum(ccsr.actual_footfalls)/sum(ccsr.actual_man_hours)),0),2) actTplh,
    round(ifnull((sum(ccsr.target_footfalls)/sum(ccsr.target_man_hours)),0),2) tarTplh,
    round(ifnull(ccsrs.target_sale,0),2) as sDTarSale,
    round(ifnull(ccsrs.target_transaction_count,0),0) as sDTarTrans,
    ifnull(ccsrs.target_quantity,0) as sDTarQty,
    ifnull(ccsrs.target_footfalls,0) as sDTarFF
    FROM
    cust_conv_store_report ccsr
    inner join cust_conv_store_report_summary ccsrs on(ccsrs.brand_code=ccsr.brand_code and ccsrs.category=ccsr.category and
                                  ccsrs.store_date=ccsr.store_date and ccsrs.value_type=ccsr.value_type)
    WHERE
    ccsr.value_type='B' and
    ccsr.brand_code= ? AND
    ccsr.store_date = date_format(str_to_date(?,'%d/%m/%Y'),'%Y-%m-%d')
    AND HOUR((TIME(ccsr.transaction_time))) >= (?) AND HOUR((TIME(ccsr.transaction_time)))< (?)
    GROUP BY
    ccsr.brand_code
    ) cons;
    Edited by: 992887 on Mar 10, 2013 4:25 AM

  • XMLAGG structure, performance help needed for odd nesting in schema

    Hello,
    I have to produce XML to look like:
    <?xml version='1.0'?>
      <enterprise>
        <membership>
          <sourcedid>
            <id>PHYS_101_001_FA2007</id>
          </sourcedid>
        <!-- NOTE: absence of "members" level tag for XMLAGG! -->
        <member>
          <sourcedid>
            <id>D2LU0001</id>
          </sourcedid>
          <role roletype="Sample Role">
            <status>1</status>
          </role>
        </member>
        <member>
          <sourcedid>
            <id>D2LU0002</id>
          </sourcedid>
          <role roletype="Sample Role">
            <status>1</status>
          </role>
        </member>
      </membership>
    </enterprise>This would be straightforward if the schema allowed for a "<members>" tag under which to nest the <member> tags. But, it does not allow for that tag or any other than those listed above.
    I have a query which does produce that output (except for the roletype attribute), but its performance is horrible; it takes about 40 minutes to return data:
    SELECT
         XMLROOT(
             XMLELEMENT("enterprise",
               XMLAGG(
                 XMLELEMENT("membership",
                   XMLFOREST( XMLELEMENT("id",cx.mapped_course_id) as "sourcedid"
                   (SELECT XMLAGG(
                     XMLELEMENT("member",
                       XMLFOREST(XMLELEMENT("id",spriden_id) AS "sourcedid",
                                 XMLELEMENT("status",'1') AS "role"
                      FROM enrollments_fall_sfrstca efs
                         , spriden sp
                         , gzv_tuid t
                     WHERE sp.spriden_change_ind IS NULL
                       AND sp.spriden_pidm       = t.pidm
                       AND t.tuid                = efs.user_name
                       AND efs.mapped_course_id  = cx.mapped_course_id
                       AND efs.term              = cx.semester
                , VERSION '1.0', STANDALONE NO VALUE)
      FROM courses_xt cx
    WHERE cx.semester = :term_code
    ;Similar queries are producing courses and users XML fine with no performance issues, but these are driven off either the courses view or the enrollments view, but not both.
    Is there some other way I can produce the nesting I need for the vendor's schema?
    The source views are basically as follows (showing relevant columns only):
    courses_xt:
    MAPPED_COURSE_ID       SEMEST
    AVFT209-13307-201210   201210
    AVFT210-13308-201210   201210enrollments_fall_sfrstca:
    MAPPED_COURSE_ID       USER_NAME
    AVFT209-13307-201210    FULLERC8
    AVFT209-13307-201210    SHUPEK
    AVFT209-13307-201210    NOMAN
    AVFT210-13308-201210    SHUPEK
    AVFT210-13308-201210    PELLONMWhen I have the query without the XML (with the subquery as a column of the outer query), this returns the correct data quickly (a couple of minutes).
    I have tried various permutations of XMLFOREST, XMLELEMENT, XMLAGG but either I get syntax errors, or the data is wrong (e.g. repeated '<membership>' for each '<member>', or I have to create an invalid tag '<members>' to be filtered later).
    Please advise!
    Thanks,
    Anita Lees

    Hi Anita,
    Have you tried with a GROUP BY and no subquery?
    Here's an example using SCOTT schema.
    I've used the same tag names and structure so that you can see the analogy :
    SELECT XMLElement("enterprise",
             XMLAgg(
               XMLElement("membership",
                 XMLElement("sourceid", xmlelement("id", d.deptno))
               , XMLAgg(
                   XMLElement("member",
                     XMLElement("sourceid",
                       XMLElement("id", e.empno)
                   , XMLElement("role",
                       XMLAttributes(e.job as "roletype")
                     , XMLElement("status", '1')
    FROM scott.dept d
         LEFT OUTER JOIN scott.emp e ON e.deptno = d.deptno
    WHERE d.deptno IN (10,20)
    GROUP BY d.deptno
    ;which gives :
    <enterprise>
      <membership>
        <sourceid>
          <id>10</id>
        </sourceid>
        <member>
          <sourceid>
            <id>7782</id>
          </sourceid>
          <role roletype="MANAGER">
            <status>1</status>
          </role>
        </member>
        <member>
          <sourceid>
            <id>7934</id>
          </sourceid>
          <role roletype="CLERK">
            <status>1</status>
          </role>
        </member>
        <member>
          <sourceid>
            <id>7839</id>
          </sourceid>
          <role roletype="PRESIDENT">
            <status>1</status>
          </role>
        </member>
      </membership>
      <membership>
        <sourceid>
          <id>20</id>
        </sourceid>
        <member>
          <sourceid>
            <id>7369</id>
          </sourceid>
          <role roletype="CLERK">
            <status>1</status>
          </role>
        </member>
        <member>
          <sourceid>
            <id>7902</id>
          </sourceid>
          <role roletype="ANALYST">
            <status>1</status>
          </role>
        </member>
        <member>
          <sourceid>
            <id>7566</id>
          </sourceid>
          <role roletype="MANAGER">
            <status>1</status>
          </role>
        </member>
      </membership>
    </enterprise>

  • URGENT HELP NEEDED FOR GROUP BY

    SELECT curve_date, curve_id, curve_type, curve_name, curve_instance, is_simple,
    comments, curve_currency, curve_generator, curve_interpolator, holidays,
    user_name, rate_index, daycount_code, frequency_code, rate_index_tenor,
    time_zone
    FROM curve a
    WHERE curve_date = (SELECT max(curve_date)
    FROM curve b
    WHERE b.curve_id = a.curve_id
    GROUP BY curve_id)
    I have this query ..This query does the FULL TABLE SCAN .....PLEASE Suggest some easier way to optimize this query.....I need it VERY VERY URGENTLY....

    SELECT curve_date, curve_id, curve_type, curve_name, curve_instance, is_simple,
    comments, curve_currency, curve_generator, curve_interpolator, holidays,
    user_name, rate_index, daycount_code, frequency_code, rate_index_tenor,
    time_zone
    FROM curve
    WHERE (curve_id, curve_date) IN (SELECT curve_id, max(curve_date)
    FROM curve
    GROUP BY curve_id)
    Be sure you have statistics collected on the table. Anyway, I am not sure that Oracle will not do the FTS for this query even if curve_id and curve_date are indexed.

  • Help needed for using BASIC authentication through JDBCRealm

    Help needed.
    Hello,
    I am doing a degree project, so far it works fine in my local machine, I need to try it on my virtual hosting (as it is a live server).
    My project requires JDBCRealm, that is BASIC authentication loading access data from mysql database. Normally this setup can be done in Server.xml file, because my Tomcat hosting is a virtual one, I only have permission to access the web.xml file.
    My question is: is it possible to get it done in an alternative way? In web.xml? Some properties file maybe?
    Thank you very much.

    You can set this up for your context using META-INF/context.xml instead of working with server.xml.
    Make a directory called META-INF under your webapp ( it'll be at the same level as WEB-INF ). Under this, add a context.xml with all your context specific configuration including the realm. A sample is below
    <?xml version="1.0" encoding="UTF-8"?>
    <Context path="/myApp" reloadable="true">
        <Realm
            className="org.apache.catalina.realm.JDBCRealm"            
            driverName="com.microsoft.jdbc.sqlserver.SQLServerDriver"         
            connectionURL="jdbc:microsoft:sqlserver://127.0.0.1:1433;DatabaseName=myDB;SelectMethod=Cursor;"
            connectionName="username" connectionPassword="password"
            digest="MD5" userTable="users" userNameCol="userid" userCredCol="userpassword"
            userRoleTable="user_roles" roleNameCol="rolename"
        />
    </Context>Hope this helps.
    People on the forum help others voluntarily, it's not their job.
    Help them help you.
    Learn how to ask questions first: http://faq.javaranch.com/java/HowToAskQuestionsOnJavaRanch
    ----------------------------------------------------------------

  • Help needed in writing a function.

    I am using Oracle 11g and SQL plus. I am a complete newbie, so I need some help here in writing a function. I guess my question is more about writing the trigonometric functions within the function.
    latA, longA latB, longB // these are the four input parameters,
    theta = longA - longB
    distX = sin( latA * PI / 180) * sin ( latB * PI /180) + cos ( latA * PI/180) * cos ( latB * PI/180) * cos ( theta * PI / 180)
    distY = acos(distX) // this is arc cosine
    distZ = distY * 180 / PI // PI refers to the mathematical PI
    distP = distZ * 60 * 1.1515; // this value should be returned. Of course the intermediate variable names don't matter.
    Please help. Thanks.

    CREATE OR REPLACE FUNCTION fucntion_name(latA IN NUMBER, longA IN NUMBER, latB IN NUMBER, longB IN NUMBER) RETURN NUMBER
    IS
    pi      CONSTANT NUMBER:=3.14159;
    theta NUMBER;
    distX  NUMBER;
    distY  NUMBER;
    distZ  NUMBER;
    distP  NUMBER;
    BEGIN
    theta :=longA - longB;
    distX :=sin( latA * PI /180) * sin ( latB * PI /180) + cos ( latA * PI/180) * cos ( latB * PI/180) * cos ( theta * PI / 180);
    distY :=acos(distX); --this is arc cosine
    distZ :=distY * 180/PI;  --PI refers to the mathematical PI
    distP :=distZ * 60 * 1.1515; --this value should be returned. Of course the intermediate variable names don't matter.
    RETURN distP;
    END;Edited by: Ora on May 3, 2011 11:46 PM

Maybe you are looking for

  • Problem with Macbook Pro early 2011, webcam not working in any apps and windows 7 or 8 on bootcamp, keyboard backlight not working?

    Hi Guys I recently bought a second hand early 2011 Macbook Pro 15 inch and are having 2 problems. The first is that none of the apps detects my webcam at all, the second is, i have Windows 8 installed on bootcamp but are unable to get the keyboard ba

  • How to start with XSLT Mapping

    Hi Everyone,     How to learn XSLT Mapping,Error Analysis,Triggering alerts and Trouble shooting in XI.Plz could anyone help to get through these areas?I'm facing many problems in my inetrviews in the above mentioned areas.I eagerly waiting for the r

  • Non PO invoice : Vendor payment terms

    Hi I tried to replicate backend payment terms to SRM by report BBP_UPLOAD_PAYMENT_TERMS. I am not getting any payment terms from BE in SRM as payment condition. I have assigned payment terms in Backend and even in SRM, assigned with manual created pa

  • MSI K8N Neo2 Help!!!!!

    My system is running perfectly fine but some how the core cell utility keep beeping. Im not sure what is happending. Anyone have similiar problem? Here is the screenshot of my core cell reading.here

  • E3000 severe drop in speed from ethernet connection to wireless

    I have an E3000 connected to COMCAST. My download speed with an Ethernet connection to my computer (Windows 7) is just over 60Mbbs. When I connect to the internet using wireless only (computer adjacent to the router), my download speed drops 50% or m