SQL query returning no rows, please help!

I have a table that contains the user checks for a specific procedures alongwith the date stamp. Now, I want the list of all procedures that are not accessible by users in the last 6 months. Or, all of the procedures that have not been used/accessible during the last 6 months.

That's what I'm trying, but is does not return all rows:

SELECT DISTINCT proc_name,
TRUNC (entry_date)
OF log_web
WHERE NOT IN (SELECT proc_name proc_name
OF log_web
WHERE TRUNC (entry_date) > TRUNC (SYSDATE - 180))
ORDER BY DESC 2

Please notify.
Thank you in advance.

Hello

NOT IN never returns TRUE if the subquery returns NULL values. If proc_name doesn't have a NOT NULL constraint, change the subquery to

WHERE        proc_name     NOT IN ( SELECT  proc_name
                            FROM      log_web
                     WHERE      entry_date     > TRUNC (SYSDATE - 180)
                     AND      proc_name     IS NOT NULL
                      )

I don't see any other suspect.
Post a small example of data (CREATE TABLE and INSERT statements) where the query produces results worng.

Tags: Database

Similar Questions

SQL query returns no row vs. multiple lines

Hello

I am trying to get the result of a simple sql query,
If there is no row returned, he would have "No. ROWS" in the result set.
Other wise all the rows containing data is necessary.

Let me know how this could be achieved. Under query works for the latter and not first case as mentioned below

OUTPUT

+ (box 1) when we use B_ID = 123456 +.

IDS
-----
'NO LINE '.

+ (box 2) when we use B_ID = 12345 +.
IDS
-----
1 11112345
2 22212345

create table TEMP_AAA
(
  A_ID VARCHAR2(10),
  B_ID VARCHAR2(10)
)

INSERT INTO TEMP_AAA(A_ID,B_ID) VALUES('111','12345');
INSERT INTO TEMP_AAA(A_ID,B_ID) VALUES('222','12345');
INSERT INTO TEMP_AAA(A_ID,B_ID) VALUES('333','12000');
INSERT INTO TEMP_AAA(A_ID,B_ID) VALUES('444','10000');

WITH 
MATCH_ROWS AS
(
       SELECT A_ID||B_ID IDS FROM TEMP_AAA WHERE B_ID=12345
),

MATCH_ROW_COUNT AS
(
       SELECT COUNT(1) AS COUNTS FROM MATCH_ROWS
),

PROCESSED_ROWS AS
(
       SELECT
             CASE WHEN COUNTS = 0
                  THEN 
                   (SELECT NVL((SELECT IDS FROM TEMP_AAA WHERE B_ID=12345),'NO ROWS') IDS FROM DUAL)
                  ELSE
                   MATCH_ROWS.IDS
             END IDS     
        FROM MATCH_ROWS,MATCH_ROW_COUNT
)

SELECT * FROM PROCESSED_ROWS;

Hello

I think you want to put this on a report or something. I have what would be easier to do this logic there. But if you want that this is possible.
Like this

with
temp_aaa as
(select '111' a_id ,'12345' b_id from dual union all
select '222'      ,'12345'  from dual union all
select '333'      ,'12000'  from dual union all
select '444'      ,'10000'  from dual
)
, wanted_rows as
( select  '123456' B_ID from dual)
select
  temp_aaa.A_ID || temp_aaa.B_ID IDS 

from
  temp_aaa
  ,wanted_rows
where
  temp_aaa.b_id = wanted_rows.b_id
union all
select
  'NO ROWS'
FROM
  DUAL
WHERE
  (SELECT COUNT(*) FROM TEMP_AAA, wanted_rows WHERE TEMP_AAA.B_ID = wanted_rows.B_ID) = 0

In addition, you mix var and number of always use the same type or convert explicitly (to_number or to_char)

WITH
MATCH_ROWS AS
(
       SELECT A_ID||B_ID IDS FROM TEMP_AAA WHERE      B_ID           =12345
--                                                    varchar2(10)   number
),
...

And again in the

                  THEN
                   (SELECT NVL((SELECT IDS FROM TEMP_AAA WHERE B_ID           =12345),'NO ROWS') IDS FROM DUAL)
--                                                             varchar2(10)   number

Kind regards

Peter

Oracle Text multi column index based query returns no rows
Hello

I have a MAH_KERESES_MV table with 3 columns OBJEKTUM_NEV, KERESES_SZOVEG_1, KERESES_SZOVEG_2. I create the following Oracle multi column text index:

ctx_ddl.create_preference exec ('MAH_SEARCH', 'MULTI_COLUMN_DATASTORE');
ctx_ddl.set_attribute exec ('MAH_SEARCH', 'COLUMNS', 'OBJEKTUM_NEV, KERESES_SZOVEG_1, KERESES_SZOVEG_2');

create index MAX_KERES_CTX on MAH_KERESES_MV (OBJEKTUM_NEV)
indexType is ctxsys.context
parameters ("DATASTORE MAH_SEARCH");
But the query returns no rows, although if I make the query with the 'like' operator, and then I get the results as expected:

SELECT id, OBJEKTUM_NEV
OF MAH_KERESES_MV
WHERE CONTAINS (OBJEKTUM_NEV, "C") > 0;

Can some body please help? TIA,

Tamas
You can do it in Oracle Text, well it is not necessarily desirable.

You can search the
```
WHERE CONTAINS(OBJEKTUM_NEV, '%C%')>0;
```
And it will probably work in a simple test. However, using a leader like this wildcard prevents them the index on the table "list of words" used, so such a request can be very slow on a large system.
You can improve this by using SUBSTRING_INDEX, but making your much bigger index. And you could always hit the 'expansions too' problem if %C % expansion is more than about 15,000 words (depending on version and different settings).

Also be aware of differences in case - %C % will match 'fact' or 'FACT', as part of a CONTAINS, but not part of a TYPE.

How to know what sub query returns multiple rows

Hi all

Someone can give me hints, how to know what sub query returns many rows in the following query.

/* Formatted on 2011/05/17 19:22 (Formatter Plus v4.8.8) */
SELECT a.*, ROWNUM AS rnm
  FROM (SELECT DISTINCT '1' AS "Page View", ou.org_unit_name AS "Org",
                        prxm.mbr_idntfr AS "Beneficiary ID",
                           md.last_name
                        || ', '
                        || md.first_name AS "Beneficiary Name",
                        pci.idntfr AS "Tracking No.",
                        TO_CHAR (TRUNC (req.pa_rqst_date),
                                 'MM/dd/yyyy'
                                ) AS "Request Date",
                        sts.status_name AS "Status",
                        req.pa_rqst_sid AS "Request #",
                        prxm.mbr_sid AS "Mbr_sid",
                        TO_CHAR
                              (TRUNC (req.pa_revision_date),
                               'MM/dd/yyyy'
                              ) AS "Last Updated",
                        TO_CHAR (psd.TO_DATE, 'MM/dd/yyyy') AS "TO_DATE",
                        prxpl.prvdr_lctn_iid AS "PRVDR_LCTN_IID",
                        pd.prvdr_sid AS "PRVDR_SID", 'Y' AS "State View",
                        DECODE
                           ((SELECT DISTINCT pd.national_prvdr_idntfr
                                        FROM pa_request_x_provider_location prxplo
                                       WHERE prxplo.pa_rqst_sid =
                                                               req.pa_rqst_sid
                                         AND prxplo.oprtnl_flag = 'A'
                                         AND prxplo.pa_prvdr_type_lkpcd = 'RR'),
                            0, (SELECT prxplo.prvdr_lctn_idntfr
                                  FROM pa_request_x_provider_location prxplo
                                 WHERE prxplo.pa_rqst_sid = req.pa_rqst_sid
                                   AND prxplo.oprtnl_flag = 'A'
                                   AND prxplo.pa_prvdr_type_lkpcd = 'RR'),
                            NULL, (SELECT prxplo.prvdr_lctn_idntfr
                                     FROM pa_request_x_provider_location prxplo
                                    WHERE prxplo.pa_rqst_sid = req.pa_rqst_sid
                                      AND prxplo.oprtnl_flag = 'A'
                                      AND prxplo.pa_prvdr_type_lkpcd = 'RR'),
                            (SELECT DISTINCT pd.national_prvdr_idntfr
                                        FROM pa_request_x_provider_location prxplo
                                       WHERE prxplo.pa_rqst_sid =
                                                               req.pa_rqst_sid
                                         AND prxplo.oprtnl_flag = 'A'
                                         AND prxplo.pa_prvdr_type_lkpcd = 'RR')
                           ) AS "NPI/ID",
                        DECODE
                           ((SELECT pd.org_bsns_name
                               FROM pa_request_x_provider_location prxplo
                              WHERE prxplo.pa_rqst_sid = req.pa_rqst_sid
                                AND prxplo.oprtnl_flag = 'A'
                                AND prxplo.pa_prvdr_type_lkpcd = 'RR'),
                            NULL, (SELECT    pd.last_name
                                          || ', '
                                          || pd.first_name
                                          || ' '
                                          || pd.middle_name
                                     FROM pa_request_x_provider_location prxplo
                                    WHERE prxplo.pa_rqst_sid = req.pa_rqst_sid
                                      AND prxplo.oprtnl_flag = 'A'
                                      AND prxplo.pa_prvdr_type_lkpcd = 'RR'),
                            (SELECT pd.org_bsns_name
                               FROM pa_request_x_provider_location prxplo
                              WHERE prxplo.pa_rqst_sid = req.pa_rqst_sid
                                AND prxplo.oprtnl_flag = 'A'
                                AND prxplo.pa_prvdr_type_lkpcd = 'RR')
                           ) AS "Prvdr Name",
                        TO_CHAR (psd.from_date,
                                 'MM/dd/yyyy'
                                ) AS "Srvc From Date",
                        TO_CHAR (req.validity_start_date,
                                 'MM/DD/YYYY'
                                ) AS "Due Date",
                        (fn_get_busniess_days (TRUNC (req.validity_start_date))
                        ) AS "Days<br>Left",
                        req.pa_mode_type_lkpcd AS "Source",
                        TO_CHAR (TRUNC (wmdtl.rtng_date),
                                 'MM/dd/yyyy'
                                ) AS "Assigned On",
                        NVL (wmdtl.assigned_to_user_name,
                             'Not Assigned'
                            ) AS "Assigned To",
                        req.org_unit_sid AS "OrgUnitSid",
                        TO_CHAR
                             (wmdtl.modified_date,
                              'MM/dd/yyyy hh24:mi:ss'
                             ) AS "WTRD_MODIFIED_DATE",
                        TO_CHAR (wmdtl.rtng_date,
                                 'MM/dd/yyyy'
                                ) AS "WTRD_RTNG_DATE",
                        req.status_cid AS "PA_STATUS_CID",
                        TO_CHAR (req.modified_date,
                                 'MM/dd/yyyy'
                                ) AS "PA_REQ_MODIFIED_DATE",
                        prs.state_pa_srvc_type_code
                                                 AS "STATE_PA_SRVC_TYPE_CODE",
                        wmdtl.wm_pa_task_rtng_dtl_sid
                                                    AS "WM_TASK_RTNG_DTL_SID",
                        wmdtl.assigned_to_user_acct_sid
                                          AS "WTRD_Assigned_to_user_acct_sid",
                        (fn_get_busniess_days (TRUNC (req.validity_start_date))
                        ) AS "Days<br>LeftSort",
                        wmdtl.assigned_to_org_unit_sid
                                              AS "WTRD_Assigned_to_OrgUntSid",
                        DECODE
                           ((SELECT COUNT (*)
                               FROM pa_request_status prs
                              WHERE prs.pa_rqst_sid = req.pa_rqst_sid
                                AND prs.status_cid = 5
                                AND prs.oprtnl_flag = 'I'),
                            0, 'N',
                            'Y'
                           ) AS "SHOW_UTILIZATION"
                   FROM   pa_request req,
                         pa_certification_identifier pci,
                         status sts,
                         pa_request_x_member prxm,
                         wm_pa_task_routing_detail wmdtl,
                         pa_service_date psd,
                         org_unit ou,
                         pa_request_service prs,
                         pa_request_x_provider_location prxpl,
                         provider_location pl,
                         provider_detail pd,
                         provider p,
                         mbr_dmgrphc md
                  WHERE req.oprtnl_flag = 'A'
                    AND req.status_cid NOT IN
                                 (20, 30, 70, 25, 80, 96, 85, 5, 97, 98, 101)
                    AND req.org_unit_sid IN
                           (3057, 3142, 3058, 3143, 3059, 3144, 3060, 3145,
                            3061, 3146, 3062, 3147, 3063, 3148, 3064, 3149,
                            3065, 3150, 3066, 3151, 3067, 3152, 3068, 3153,
                            3069, 3154, 3070, 3155, 3071, 3156, 3072, 3157,
                            3073, 3158, 3074, 3159, 3075, 3160, 3076, 3161,
                            3077, 3162, 3078, 3163, 3079, 3164, 3080, 3165,
                            3081, 3166, 3082, 3167, 3083, 3168, 3084, 3169,
                            3085, 3170, 3086, 3171, 3087, 3172, 3088, 3173,
                            3089, 3174, 3090, 3175, 3091, 3176, 3092, 3177,
                            3093, 3178, 3094, 3179, 3095, 3180, 3096, 3181,
                            3097, 3182, 3098, 3183, 3099, 3184, 3100, 3185,
                            3101, 3186, 3102, 3187, 3103, 3003, 75000104,
                            75000108, 2006, 75000103, 75000102, 75000113,
                            75000111, 75000109, 2001, 2009, 75000105,
                            75000107, 2004, 2010, 2013, 2014, 2005, 2011,
                            75000112, 2002, 1001, 2012, 75000106, 2007,
                            75000101, 2003, 75000110, 2008, 3001, 3002, 3019,
                            3104, 3020, 3105, 3021, 3106, 3022, 3107, 3023,
                            3108, 3024, 3109, 3025, 3110, 3026, 3111, 3027,
                            3112, 3028, 3113, 3029, 3114, 3030, 3115, 3031,
                            3116, 3032, 3117, 3033, 3118, 3034, 3119, 3035,
                            3120, 3036, 3121, 3037, 3122, 3038, 3123, 3039,
                            3124, 3040, 3125, 3041, 3126, 3042, 3127, 3043,
                            3128, 3044, 3129, 3045, 3130, 3046, 3131, 3047,
                            3132, 3048, 3133, 3049, 3134, 3050, 3135, 3051,
                            3136, 3052, 3137, 3053, 3138, 3054, 3139, 3055,
                            3140, 3056, 3141)
                    AND req.pa_rqst_sid = prs.pa_rqst_sid
                    AND prs.oprtnl_flag = 'A'
                    AND prs.pa_rqst_srvc_sid = psd.pa_rqst_srvc_sid
                    AND psd.oprtnl_flag = 'A'
                    AND req.pa_rqst_sid = pci.pa_rqst_sid
                    AND pci.oprtnl_flag = 'A'
                    AND req.pa_rqst_sid = prxm.pa_rqst_sid
                    AND prxm.oprtnl_flag = 'A'
                    AND md.oprtnl_flag = 'A'
                    AND md.status_cid = 2
                    AND TRUNC (SYSDATE) BETWEEN md.from_date AND md.TO_DATE
                    AND prxm.mbr_sid = md.mbr_sid
                    AND ou.org_unit_sid = req.org_unit_sid
                    AND ou.oprtnl_flag = 'A'
                    AND req.pa_rqst_sid = prxpl.pa_rqst_sid
                    AND prxm.pa_rqst_sid = prxpl.pa_rqst_sid
                    AND pci.pa_rqst_sid = prxm.pa_rqst_sid
                    AND pci.pa_rqst_sid = wmdtl.subsystem_task_sid
                    AND pci.pa_rqst_sid = prxpl.pa_rqst_sid
                    AND prxpl.pa_prvdr_type_lkpcd = 'RR'
                    AND prxpl.oprtnl_flag = 'A'
                    AND req.status_cid = sts.status_cid
                    AND sts.status_type_cid = 3
                    AND sts.oprtnl_flag = 'A'
                    AND prxpl.prvdr_lctn_iid = pl.prvdr_lctn_iid
                    AND p.prvdr_sid = pd.prvdr_sid
                    AND p.prvdr_sid = pl.prvdr_sid
                    AND pd.oprtnl_flag = 'A'
                    AND pd.status_cid = 2
                    AND TRUNC (SYSDATE) BETWEEN pd.from_date AND pd.TO_DATE
                    AND wmdtl.subsystem_task_sid = req.pa_rqst_sid
                    AND wmdtl.subsystem_lkpcd = 'PA'
                    AND wmdtl.oprtnl_flag = 'A'
                    AND req.pa_rqst_date > (SYSDATE - 365)
                                   ORDER BY TO_DATE ("Request Date", 'MM/dd/yyyy hh24:mi:ss') DESC,
                        "Beneficiary Name" ASC) a
 WHERE ROWNUM < 102;

Kind regards
Prakash P

Published by: BluShadow on May 17, 2011 15:01
addition of {noformat}

{noformat} tags around the code

3360 wrote:
See point 9 of this section of the FAQ on how to format the code.

SQL and PL/SQL FAQ

I see that you did.

No, I did. It's pretty easy to change if the code seems formatted anyway below. It's when I go to edit the message and find no sense because it is not formatted in all cases, I despair. {noformat} :) {noformat}

If a view object query returns no rows, can the vacuum to be tested at all?

All those who know or have also experienced:

I guess that the answer should be Yes, but I tried anyway, I still didn't worked. Here is the code (it's a method behind a command button, a bean of support (I use JDeveloper 10.1.3.4).) In the code, LoggedInStudent is the name of a view object; ZBLCModule is the name of the application module):

    public String commandButton1_action() {
        FacesContext fc = FacesContext.getCurrentInstance();
        ValueBinding vb = fc.getApplication().createValueBinding("#{data}");
        BindingContext bc = (BindingContext)vb.getValue(fc);
        DCDataControl dc = bc.findDataControl("ZBLCModuleDataControl");
        ApplicationModule am = (ApplicationModule)dc.getDataProvider();
        ZBLCModuleImpl zblcam = (ZBLCModuleImpl)am;
        LoggedInStudentImpl studentsFound = (LoggedInStudentImpl)zblcam.getLoggedInStudent();
        
        String navCase = null;
        
        // Test (1): if the view cache is empty; always bombs up the application if it IS empty:
        if(studentsFound.getAllRowsInRange().length == 0) {
            navCase = "userNotFound";
        // (2) The following three tests gets to run only when the cache is not empty; they work fine.
        } else if (((Number)studentsFound.first().getAttribute("HoursAttm")).floatValue() == 0.0) {
            navCase = "noHours";
        } else if (((Number)studentsFound.first().getAttribute("Balance")).floatValue() > 0.0) {
            navCase = "notZero";
        } else if (!(studentsFound.first().getAttribute("Validated").equals(" "))) {
            navCase = "validated";
        } else {
            navCase = "zeroBal";
        }
        return navCase;
    }

When the view object query returns a line, the whole of the application works without error. When the query returns no rows, test (1) always bombs toward the top of the application, prompting a Houston-30003 error.

(1) test, I tried the following:

  if (studentsFound.getAllRowsInRange().length == 0)
  if (studentsFound.first() == null)
  if (studentsFound.getEstimatedRowCount() == 0)
  if (studentsFound.isDead()) //I do not know what isDead() does; just tried desperately.
  if (studentsFound.equals(null))
  if (studentsFound.getCurrentRow() == null)

With each of these events, I got an error of Houston-30003. It does not matter what looks like the conditional test; It is important only when the objects from view cache is empty. If the view cache is not empty, everything, including the test (1), works very well. And when the cache is empty is not because of the failure of the connection to the database, but because the student is not in the data table and line are for the student.

It is a requirement of the company to do something when the view object query returns no rows. Can it be tested at all? How?

Or is there something wrong in the first lines in the method before the {color: green} String navCase = null; {color} line?

Thank you very much for your help!

Newman

Hello

What you have done, is to get a handle to the object that CAN execute queries to the database.
However, you do not query the database.

Just add:

  LoggedInStudentImpl studentsFound = (LoggedInStudentImpl)zblcam.getLoggedInStudent();
  //New line
  studentsFound.executeQuery();

The code that Shay has given you is when you do not have a request for all module, but since you are talking about a command etc button I guess that the module of the application is already active.
The line I gave you should be enough to make it work.

I'd be careful with the

studentsFound.hasNext();

I suggest to use estimatedRowCount();

-Anton

put an item into the basket, made an empty recycle bin, need return the item, please help, I did nothing since the drain, so the machine is in the same condition as when I emptied

put an item into the basket, made an empty recycle bin, need return the item, please help, I did nothing since the drain, so the machine is in the same condition as when I emptied

If you have xp, you can do system restore

single line sub query returns multiple rows
Hi, please help me to solve this, working with oracle 11g.

Update t1 set t1.twyindex = twypoly (select twyindex from twyinfo where t1.id = t2.id t2);

the error message is:
*
ERROR on line 1:
ORA-01427: einreihig subquery returns multiple rows

Thank you
don123 wrote:
Hi paul, thanks...

duplicate existing due to the business logic data.

can I use the SQL mentioned above for all cases?

is it mandatory to remove duplicates?

Please provide your suggestions...

If the company says duplicates are allowed, you have to ask the person who wants what, of the different twyindexes, that they want to use
updating twyinfo table...

I use the SQL proposed until they tell you that twyindex to use.

'Function SQL Query return' using with Flash graphics
I created a pl/sql function that returns a SQL query in a varchar2 of this form:

Select the null link
-value > < x value
< value y of Series1 > series 1 label
< value Series2 y > 2 series label
< value of y Series3 > series 3 Label
...
...
from tablea a
Join tableb b
On a.col = b.col
order of < x value >

If I call the function of a graphic Flash box series SQL with the Type of Source query "SQL query" value that returns the function like this:

return functionname (to_date ('30-sep-2010, ' mon-dd-yyyy ""))

It parses correctly and the page is saved; However, when I run the page I get no output - error messages or another indication of a problem.

Now, if I call the function in a SQL client, capture the result of the query SQL using the dbms_output and paste that into the box graphic Flash series SQL - change the Source Type of SQL query query - and save the page it works fine when I run it and returns a chart series flash.

Can anyone suggest either;

1. what I might have missed or done wrong?
2. a way to effectively diagnose the problem...

I tried to use the debugger Apex - what is very nice, indeed - but it provides no information on what might be my problem. I tried to write my own my function debug messages using the apex_debug_message package - nothing...

Thank you
Eric
Hi Eric,.

Try to pull the source like this:
```
begin
   return functionname(to_date('30-sep-2010', 'dd-mon-yyyy'));
end;
```
This works very well for me, and if I take the begin-end and the final semicolon from the return statement I get the same behavior as you.

He doesn't mention in aid of the source (only during the wizard if) this source type must be expressed in this way, but I agree, it would be useful that the tool would validate to this format meets it "Query SQL that returns the function" or give some sort of indication of the sentence. In any case, this should help you will again.

Hope this helps,
John

If you find this information useful, please do not forget to mark the 'useful' or 'correct' post so that others benefit as well.

Stupid old backpacker (me) cannot understand why this query returns 1 row

Hi all

In reference to {: identifier of the thread = 2456973}, why do

select sum(count(decode(job, 'CLERK', 1, null))) CLERKS
, sum(count(decode(job, 'SALESMAN', 1, null))) SALESMANS
from emp group by job;

only 1 rank and not 1 for each task? In fact, I had to test it myself to believe.

It returns the data as if the query were

select sum(CLERKS), sum(SALESMANS)
from (select count(decode(job, 'CLERK', 1, null)) CLERKS, count(decode(job, 'SALESMAN', 1, null)) SALESMANS
         from emp group by job)

Using only a single aggregate (count or sum) returns 1 row per job, as expected

John Stegeman wrote:
It returns the data as if the query were

select sum(CLERKS), sum(SALESMANS)
from (select count(decode(job, 'CLERK', 1, null)) CLERKS, count(decode(job, 'SALESMAN', 1, null)) SALESMANS
from emp group by job)

Exactly the point ;-)

It seems that Oracle actually do, a group of 'double' in the same operation.
Attend plans to explain in this example:

SQL> select count(decode(job, 'CLERK', 1, null)) CLERKS
  2       , count(decode(job, 'SALESMAN', 1, null)) SALESMANS
  3  from scott.emp group by job;

    CLERKS  SALESMANS
---------- ----------
         0          0
         0          0
         0          0
         0          4
         4          0

Execution Plan
----------------------------------------------------------
Plan hash value: 1697595674

---------------------------------------------------------------------------
| Id  | Operation          | Name | Rows  | Bytes | Cost (%CPU)| Time     |
---------------------------------------------------------------------------
|   0 | SELECT STATEMENT   |      |     5 |    40 |     4  (25)| 00:00:01 |
|   1 |  HASH GROUP BY     |      |     5 |    40 |     4  (25)| 00:00:01 |
|   2 |   TABLE ACCESS FULL| EMP  |    14 |   112 |     3   (0)| 00:00:01 |
---------------------------------------------------------------------------

And compare it to the one with the double aggregates:

SQL> select sum(count(decode(job, 'CLERK', 1, null))) CLERKS
  2       , sum(count(decode(job, 'SALESMAN', 1, null))) SALESMANS
  3  from scott.emp group by job;

    CLERKS  SALESMANS
---------- ----------
         4          4

Execution Plan
----------------------------------------------------------
Plan hash value: 417468012

----------------------------------------------------------------------------
| Id  | Operation           | Name | Rows  | Bytes | Cost (%CPU)| Time     |
----------------------------------------------------------------------------
|   0 | SELECT STATEMENT    |      |     1 |     8 |     4  (25)| 00:00:01 |
|   1 |  SORT AGGREGATE     |      |     1 |     8 |     4  (25)| 00:00:01 |
|   2 |   HASH GROUP BY     |      |     1 |     8 |     4  (25)| 00:00:01 |
|   3 |    TABLE ACCESS FULL| EMP  |    14 |   112 |     3   (0)| 00:00:01 |
----------------------------------------------------------------------------

There are GROUP BY hash and SORT GLOBAL times.

It is really unnecessary to an aggregate on an aggregate - if two aggregates are used "in the same group level.
Sum() aggregates are used on an already aggregated value, so it doesn't look like Oracle which actually cures like 'first do the internal aggregate using the group specified by and then do the external aggregation on the result with any group.'

Look at this example where I combine aggregates "double" with "single" aggregates:

SQL> select sum(count(decode(job, 'CLERK', 1, null))) CLERKS
  2       , sum(count(decode(job, 'SALESMAN', 1, null))) SALESMANS
  3       , count(decode(job, 'SALESMAN', 1, null)) SALESMANS2
  4       , count(*) COUNTS
  5  from scott.emp group by job;

    CLERKS  SALESMANS SALESMANS2     COUNTS
---------- ---------- ---------- ----------
         4          4          1          5

Execution Plan
----------------------------------------------------------
Plan hash value: 417468012

----------------------------------------------------------------------------
| Id  | Operation           | Name | Rows  | Bytes | Cost (%CPU)| Time     |
----------------------------------------------------------------------------
|   0 | SELECT STATEMENT    |      |     1 |     8 |     4  (25)| 00:00:01 |
|   1 |  SORT AGGREGATE     |      |     1 |     8 |     4  (25)| 00:00:01 |
|   2 |   HASH GROUP BY     |      |     1 |     8 |     4  (25)| 00:00:01 |
|   3 |    TABLE ACCESS FULL| EMP  |    14 |   112 |     3   (0)| 00:00:01 |
----------------------------------------------------------------------------

When you mix "doubles" and "single" aggregates, Oracle decides that unique aggregates belong to the 'outer' aggregation
SALESMAN2 did a count on the aggregated work column which is the result of the 'internal' group by - so only 1.
The count (*) is also the result of the aggregation of the 'internal '.

I don't know if it's documented or if it is an 'effect' of internal code used for GROUPING SETS or the internal code used to enable the analytical functions like this:

SQL> select count(decode(job, 'CLERK', 1, null)) CLERKS
  2       , count(decode(job, 'SALESMAN', 1, null)) SALESMANS
  3       , sum(count(decode(job, 'CLERK', 1, null))) over () CLERKS2
  4       , sum(count(decode(job, 'SALESMAN', 1, null))) over () SALESMANS2
  5  from scott.emp group by job;

    CLERKS  SALESMANS    CLERKS2 SALESMANS2
---------- ---------- ---------- ----------
         0          0          4          4
         4          0          4          4
         0          0          4          4
         0          0          4          4
         0          4          4          4

Execution Plan
----------------------------------------------------------
Plan hash value: 4115955660

----------------------------------------------------------------------------
| Id  | Operation           | Name | Rows  | Bytes | Cost (%CPU)| Time     |
----------------------------------------------------------------------------
|   0 | SELECT STATEMENT    |      |     5 |    40 |     4  (25)| 00:00:01 |
|   1 |  WINDOW BUFFER      |      |     5 |    40 |     4  (25)| 00:00:01 |
|   2 |   SORT GROUP BY     |      |     5 |    40 |     4  (25)| 00:00:01 |
|   3 |    TABLE ACCESS FULL| EMP  |    14 |   112 |     3   (0)| 00:00:01 |
----------------------------------------------------------------------------

Personally, I think that I would have preferred if Oracle has raised an error on this "double aggregation" and therefore require me to write this way (if it's the result I wanted):

select sum(CLERKS), sum(SALESMANS)
from (select count(decode(job, 'CLERK', 1, null)) CLERKS, count(decode(job, 'SALESMAN', 1, null)) SALESMANS
         from emp group by job)

I don't really see a good use case for aggregations of 'double'-, but rather that he could give you undetected bugs in your code, if you happen to do double aggregation without noticing.

Interesting thing to know ;-)

Attributes XML makes my query returns no rows

Hi all

I have a strange problem.

I ask an XML, but the attributes in one of the tags my query will return no rows. If I delete the attributes, the query works as expected.

The XML code is below; This is the Report tag attributes that cause problems:

<result errorCode="0">
     <return>
          <Report
               xsi:schemaLocation="Items_x0020_status_x0020_information http://******-****/ReportServer?%2FReports%2FContent%20Producer%20Reports%2FItems%20status%20information&amp;rs%3AFormat=xml&amp;rc%3ASchema=True"
               Name="Items status information" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
               xmlns="Items_x0020_status_x0020_information">
               <Tablix1>
                    <Details_Collection>
                         <Details ItemId="914P7" Username="test" user_role="IT"
                              first_name="Barry" last_name="Donovan" organisation=""
                              content_format="On_Screen" modified_date="26/05/2011 13:16:49"
                              item_status="Draft" status_date="" component_name="" demand="" />
                    </Details_Collection>
               </Tablix1>
          </Report>
     </return>
</result>

My query is:

     select
            a.item_id
           ,a.username
           ,a.user_role
           ,a.first_name
           ,a.last_name
           ,a.supplier_id
           ,a.format
           ,a.modified_date
           ,a.item_status
           ,a.completion_date
           ,a.component_code

         from   dual
               ,xmltable
                ('/result/return/Report/Tablix1/Details_Collection/Details'
                   passing p_xml
                   columns
                      item_id         varchar2(1000) path '@ItemId'
                     ,username        varchar2(1000) path '@Username'
                     ,user_role       varchar2(1000) path '@user_role'
                     ,first_name      varchar2(1000) path '@first_name'
                     ,last_name       varchar2(1000) path '@last_name'
                     ,supplier_id     varchar2(1000) path '@organisation'
                     ,format          varchar2(1000) path '@content_format'
                     ,modified_date   varchar2(1000) path '@modified_date'
                     ,item_status     varchar2(1000) path '@item_status'
                     ,completion_date varchar2(1000) path '@status_date'
                     ,component_code  varchar2(1000) path '@demand'
                ) a;

I tried to strip the attributes to the tag, which works, but some XML I look back are large enough (number of records), so that cause problems in itself. I would rather deal with it and don't mess with the XML itself if possible.

Any help would be much appreciated!

Thank you much in advance.

Robin

Published by: User_resU on April 12, 2012 14:50

The element of report and its children belong to a default namespace.
You have stated that in the request too:

xmltable
(
xmlnamespaces('Items_x0020_status_x0020_information' as "ns0"),
'/result/return/ns0:Report/ns0:Tablix1/ns0:Details_Collection/ns0:Details'
   passing

SQL * MORE using command START - please help me understand
Hello dear friends,

I encountered a problem that I don't understand. Could you please explain to me what wrong with my logic.

I created the file called DUMMY.sql sql
the file context is:

SELECT a model
OF dummy_tbl
WHERE dummy_col = & dummy_var;

I'm going to SQL * Plus DB version (10.2.0.4.0).

I command promt: MODEL of STARTING 1
and waits * & dummy_var * must be replaced by * 1 * and query executed as described in Oracle SQL * MORE reference ([http://download-west.oracle.com/docs/cd/B12037_01/server.101/b12170/ch6.htm#sthref1058 | http://download-west.oracle.com/docs/cd/B12037_01/server.101/b12170/ch6.htm#sthref1058]).

But instead, I'm getting enter the value for dummy_var:

Please help me understand

Thanks in advance.
You must use 1 & instead of & dummy_var.

The number refers to the position of the parameter to use; 1 is the first parameter & 2 would be a second parameter and so on.
```
SELECT dummy
FROM dummy_tbl
WHERE dummy_col=&1;
```

reload the page when SQL query returns a value

Hello world
the title of this discussion may seem strange, but I'll try to explain why I need this:
A user has the ability to connect on my APEX application. There are several tabs in my application that are visible only if a certain SQL statement returns a value which is not the case by default. The user has also the ability to download a file that is transferred to an external system that analyzes the file and writes the data in the database. During this writing process - which may take several minutes - conditions for some of the tabs to show the will becomes real (-> the query will return a value). When the user refreshes the page manually, the tabs will be displayed. However, I want the tabs will appear automatically when the condition is met.
Is it possible to refresh the page as soon as the query returns a value? It is perhaps possible to check it on the client side and trigger a refresh of the page when the condition is met. It would be even better if only the tabset has been updated, but refreshing the full page is fine as well.
Thank you!

Here is an overview of how it can be done

This is possible thanks to a dynamic action being performed on a timer.

View default tabs and dynamic action hide them on loading the page if they are not to be considered

Create a dynamic action that will execute your query every 5 seconds or more

If the query returns data, you can use the dynamic action to show your tabs using javascript

SQL query - only unique rows back

Hello

If you have an employee table, where employees are listed by Department, using SQL, could return you the names of the employees listed by Department on one single line?

EG - select deptno, employee first name

DEPTNO name
10 Jane
Jack 20
10 Joe
Jill 20
Jacinta 10
30 John
Jeffrey 30
10 Jackie
Jennifer 30
... etc.

the return set of the query might look like:

Concat name DEPTNO
Jane 10 Joe Jacinta Jackie...
20 shooting Jill...
30 John Jeffrey Jennifer...

See you soon

or use the LISTAGG function

WITH T AS
(SELECT 10 deptno, 'Jane' first_name FROM dual UNION
 SELECT 20 deptno, 'Jack' first_name FROM dual UNION
 SELECT 10 deptno, 'Joe' first_name FROM dual UNION
 SELECT 20 deptno, 'Jill' first_name FROM dual UNION
 SELECT 10 deptno, 'Jacinta' first_name FROM dual UNION
 SELECT 30 deptno, 'John' first_name FROM dual UNION
 SELECT 30 deptno, 'Jeffrey' first_name FROM dual UNION
 SELECT 10 deptno, 'Jackie' first_name FROM dual UNION
 SELECT 30 deptno, 'Jennifer' first_name FROM dual)
SELECT   DEPTNO, LISTAGG(first_name,' ') within GROUP (order by deptno)
FROM     T
group by DEPTNO

PL/SQL Query return function, adding the column links
Hi all

I'm working on a SQL report with the area type = function from PL/SQL Query to return
All columns are generated dynamically based on my mapping table and a column of ID.
So whenever the page is loaded, according to the ID mapping table returns a set of columns in a particular order.
So not only the columns are dynamic, but the order of the columns varies also.
But the first 1 column is standard (it doesn't come from the mapping table) and is coded in my pl/sql block hard.

I'm fighting with the addition of a link to this column. The link must be a Javascript function which takes the parameters in the form of 2 columns in the mapping table.
My pl/sql block is something like that...
```
v_select := 'SELECT <g href=javascript:f_report1(#map_id#,#comments#)><img src=""></a> as report1, ';  // g=a
v_cols := 'contains all columns from the mapping table based on a ID(hidden item)';
v_from := 'FROM table';
v_where := 'where condition is put in here';
v_query := v_select||v_from||v_where;
return v_query;
```
Now, I'm not able to transmit the values of this #map_id # and #comments # correctly. I tried so many different combinations of channels, but could not make it work.

I'm not sure that the order of this map_id and commentscolumn and therefore cannot connect through the report attributes.
How can I go to a column value to the function?

Thank you
Dippy
This should work if all goes well:
```
v_select := q'[ SELECT '' as chart, ]';
```
Published by: Dimitri Gielis on May 20, 2010 20:10

User_Scheduler_Jobs query returns no row in the version 2.1.0.63

Using the 2.1.0.63 version, "select * from user_scheduler_jobs;" returns no rows. It works fine in version 1.5.5.

Published by: User65423 on February 8, 2010 09:24

Refer to this topic, when the cause seems to be due to SQL Developer manages not null interval data types.

bug? F9 gives no output dba_scheduler_jobs, version: 2.1.0.63.73

As mentioned in this thread, you can use to_char on the columns of the interval as a workaround...

SELECT source,
destination,
comments,
flags,
job_name,
job_creator,
client_id,
global_uid,
program_owner,
program_name,
job_type,
job_action,
number_of_arguments,
schedule_owner,
schedule_name,
start_date,
repeat_interval,
end_date,
job_class,
enabled,
auto_drop,
restartable,
state,
job_priority,
run_count,
max_runs,
failure_count,
max_failures,
retry_count,
last_start_date,
TO_CHAR(last_run_duration),
next_run_date,
TO_CHAR(schedule_limit),
TO_CHAR(max_run_duration),
logging_level,
stop_on_window_close,
instance_stickiness,
system,
job_weight,
nls_env
FROM user_scheduler_jobs a;

SQL query returning no rows, please help!

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