Aggregate functions like 'max' in XQuery..

Hello,
I am trying to find the max of one of the fields in the table using XQuery aggregate function: fn:max as described in the below URL:
http://e-docs.bea.com/aldsp/docs30/xquery/sql_pushdown.html
Here is what I have:
declare $lineNo as xs:int :=
     for $pd in ns4:getAllPalletDtls()
     group $pd/LINE_NO as $line_group
     by 1
     return fn:max($line_group);
However, it's giving me error at line # 3 above:
Invalid expression: Expecting AS, found '/'
I am getting this error in ALDSP3.0.1 Aqualogic Data Service Studio.
Could someone please let me know what is wrong with the above code.
Thanks a lot,
Mamta

"group" expects to be followed by a variable (not an expression). If you add a 'let' with your expression you can create the following which is more inline with your original query
declare $lineNo as xs:int :=
for $pd in ns4:getAllPalletDtls()
let $lineNo := $pd/LINE_NO
group $lineNo as $line_group
by 1
return fn:max($line_group);

Similar Messages

Trying to create a Histogram type/object for aggregate functions

Hi,
I am trying to create an aggregate function that will return a histogram
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It doesn't have to be an object that is returned, I don't mind returning
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I started out with the SecondMax example in
http://www.csis.gvsu.edu/GeneralInfo/Oracle/appdev.920/a96595/dci11agg.htm#1004821
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-- TYPE Hist10 IS TABLE OF pls_integer INDEX BY varchar2(10),
-- retval hist10;
-- retval number,
retval noam.const.hist10,
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value IN varchar2) return number,
member function ODCIAggregateTerminate (self IN Histogram,
returnValue OUT varchar2,
flags IN number) return number,
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ctx2 IN Histogram) return number
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static function ODCIAggregateInitialize(sctx IN OUT Histogram) return
number is
begin
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else self.retval(value):=1;
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returnValue OUT varchar2,
flags IN number)
return number is
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ctx2 IN Histogram) return number is
begin
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if self.retval.exist(ctx2(i))
then self.retval(i):=self.retval(i)+ctx2.retval(i);
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i := ctx2.NEXT(i); -- get subscript of next element
END LOOP;
return ODCIConst.Success;
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retval varchar2(16383), -- concat of all value to now varchar2, --
highest value seen so far
static function ODCIAggregateInitialize (sctx IN OUT stringCat)
return number,
member function ODCIAggregateIterate (self IN OUT stringCat,
value IN varchar2) return number,
member function ODCIAggregateTerminate (self IN stringCat,
returnValue OUT varchar2,
flags IN number) return number,
member function ODCIAggregateMerge (self IN OUT stringCat,
ctx2 IN stringCat) return number
CREATE OR REPLACE type body stringCat is
static function ODCIAggregateInitialize(sctx IN OUT stringCat) return
number is
begin
sctx := stringCat('');
return ODCIConst.Success;
end;
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varchar2)
return number is
begin
if self.retval is null
then self.retval:=value;
else self.retval:=self.retval || ',' || value;
end if;
return ODCIConst.Success;
end;
member function ODCIAggregateTerminate(self IN stringCat,
returnValue OUT varchar2,
flags IN number)
return number is
begin
returnValue := self.retval;
return ODCIConst.Success;
end;
member function ODCIAggregateMerge(self IN OUT stringCat,
ctx2 IN stringCat) return number is
begin
self.retval := self.retval || ctx2.retval;
return ODCIConst.Success;
end;
end;
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-- PARALLEL_ENABLE
AGGREGATE USING StringCat;

GraphicsConfiguration is an abstract class. You would need to subclass it. From the line of code you posted, it seems like you are going about things the wrong way. What are you trying to accomplish? Shouldn't this question be posted in the Swing or AWT forum?

Aggregate functions in EJBQL ???

Does the latest version of Oracle App server support aggregate functions like SUM/COUNT/AVG in the EJBQL?

Does the latest version of Oracle App server support aggregate functions like SUM/COUNT/AVG in the EJBQL? Hi Swami --
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cheers
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Aggregate function on "large value type"

We are constrained to use a model that stores records in a main table and various attributes of the record in a second table. Something like this: main record table CAR, attribute table CAR_DETAILS with CAR_DETAILS have key value pairs like "color"
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Appreciate any ideas on how to solve this

I found a work around : create a second dataset reversing the direction:
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=Lookup(Fields!car_Id.Value,Fields!Icar_Id.Value,Fields!car_detail.Value, "DataSet2")
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Running Aggregate Functions, Attribute or Measure?

Hi Guys:
I wonder if this is a bug in BIEE 11g? I am using 11.1.1.6.
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Thanks
Larry

Hi Larry,
I do not think this is any bug in .6 and I just gave a try successfully to confirm that too. My test case follows
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Thank you,
Dhar

Need help on real life usage of Aggregate functions

Hi All,
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Hi Charles,
I'm having the same issue. If anyone answers my post, I'll let you know. If you remember, please let me know if anyone gives you an answer. I'm gonna try calling Apple tomorrow.
All the best,
Jimmy

Aggregate function max

hi evrybdy
can we use MAX aggregate function to pick a field of type char from database table ...if yes thn how ..?
plzzz ans soon .
thank u .

No. Max is only for numbers. ( even it will not work for NUMC type )
OPENSQL statements will not work as ASCII format.
Cheers
Kothand

Does EJBQL in JDeveloper support max aggregate function ?

Does EJBQL in JDeveloper support max aggregate function ?
I can't get it to work using select max(o.time) from MyObject o; It always returns the MyObject to me.
Anybody knows how to do this ?
Thanks.

No one knows how exactly this works in JDeveloper 11g? As I see it, it's most likely a bug. For one, JDeveloper already supports plenty of databases and enforces some limitations on the useability of these databases where necessary (for instance, JDBC Positioning instead of Oracle's way of binding for the bind variables in a query). However, this enforcement does not happen with the WHERE clause of the view criteria in MySQL when you choose an operator that concatenates strings together in the WHERE clause, such as "contains". You'd expect it's smart enough to use different syntax for concatenating the strings, depending on the database (e.g., CONCAT for MySQL, || for Oracle). Second, lack of this enforcement should not break functionality, and here it does (searching with wildcards in LOV is just not possible declaratively with MySQL), which resembles a bug in the software.
For now, I've completely rewritten the LOV in Java, so it's not declarative anymore, but programmatic. It works, resembles searching with "contains" and it stays that way, despite of the higher difficulty in maintenance, until this issue can be solved declaratively, by any means: via a patch release or via a workaround. I hope someone can provide me (and quite possibly others facing this issue) with insight upon this.
Thanks in advance.

Why doesn't PIVOT clause work with COLLECT aggregate function in 11g ?

Hello all !
I am really puzzled as to what is considered an aggregate function in the context of the PIVOT clause in 11g.
I have been toying with quite a few things related to collections lately and this arose as an aside :
CREATE TABLE TEST_COLL
   NODE_ID    VARCHAR2(15 CHAR) NOT NULL,
   NODE_VALUE VARCHAR2(45 CHAR) NOT NULL,
   NODE_LEVEL NUMBER(1)         NOT NULL
CREATE OR REPLACE TYPE TREE_NODE AS OBJECT
   NODE_KEY VARCHAR2( 15 CHAR),
   NODE_NAME VARCHAR2(127 CHAR)
CREATE OR REPLACE TYPE TREE_NODES AS TABLE OF TREE_NODE NOT NULL;At this stage I am sure we all agree that the query
SELECT NODE_LEVEL,
       CAST(COLLECT(TREE_NODE(NODE_ID, NODE_VALUE)) AS TREE_NODES) AS NODES
FROM TEST_COLL
GROUP BY NODE_LEVEL;is perfectly valid as the COLLECT function is an aggregate function according to the [Official Documentation|http://docs.oracle.com/cd/E11882_01/server.112/e10592/functions031.htm#i1271564]
But then, one of the following two queries should work
SELECT CAST(REGION_NODES     AS TREE_NODES) AS REGIONS,
       CAST(DEPARTMENT_NODES AS TREE_NODES) AS DEPARTMENTS,
       CAST(AREA_NODES       AS TREE_NODES) AS AREAS,
       CAST(CENTRE_NODES     AS TREE_NODES) AS CENTRES
FROM (SELECT NODE_LEVEL, TREE_NODE(NODE_ID, NODE_VALUE) AS NODE
          FROM TREE_COLL
PIVOT (COLLECT(NODE) FOR NODE_LEVEL IN (1 AS REGION_NODES,
                                         2 AS DEPARTMENT_NODES,
                                         3 AS AREA_NODES,
                                         4 AS CENTRE_NODES
or (better)
SELECT REGION_NODES     AS REGIONS,
       DEPARTMENT_NODES AS DEPARTMENTS,
       AREA_NODES       AS AREAS,
       CENTRE_NODES     AS CENTRES
FROM (SELECT NODE_LEVEL, TREE_NODE(NODE_ID, NODE_VALUE) AS NODE
          FROM TREE_COLL
PIVOT (CAST(COLLECT(NODE) AS TREE_NODES) FOR NODE_LEVEL IN (1 AS REGION_NODES,
                                                             2 AS DEPARTMENT_NODES,
                                                             3 AS AREA_NODES,
                                                             4 AS CENTRE_NODES
       );yet, both fail with
ORA-56902: expect aggregate function inside pivot operationInvestigating further, I found the same behaviour when using XMLAGG as the aggregate function in the PIVOT clause.
Is this normal ? And if it is, is there any other way to achieve the result I was anticipating ?
My version is
SQL> SELECT BANNER FROM V$VERSION;
BANNER
Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production
PL/SQL Release 11.2.0.3.0 - Production
CORE    11.2.0.3.0      Production
TNS for 64-bit Windows: Version 11.2.0.3.0 - Production
NLSRTL Version 11.2.0.3.0 - ProductionThanks in advance
Best Regards
Philip

Most likely a bug. But you can bypass it by using any other aggregate making sure group consists of a single row and apply collect to a pivoted value. Yes, the cost is double aggregation. And also there is another cost - you would need to create MAP member function otherwise aggreations like MAX/MIN, etc. will not work:
CREATE OR REPLACE TYPE TREE_NODE AS OBJECT
   NODE_KEY VARCHAR2( 15 CHAR),
   NODE_NAME VARCHAR2(127 CHAR),
   map member function f return varchar2
Type created.
CREATE OR REPLACE TYPE BODY TREE_NODE AS
map member function f return varchar2 is
begin
     return NODE_NAME;
end f;
end;
Type body created.
CREATE OR REPLACE TYPE TREE_NODES AS TABLE OF TREE_NODE NOT NULL
Type created.
SQL> select *
2    from test_coll
3 /
NODE_ID NODE_VALUE NODE_LEVEL
1       A                   1
2       B                   2
3       C                   3
4       D                   4
5       E                   1
6       F                   2
7       G                   3
8       H                   4
8 rows selected.
SQL> Now:
SELECT CAST(COLLECT(REGION_NODES)     AS TREE_NODES) AS REGIONS,
       CAST(COLLECT(DEPARTMENT_NODES) AS TREE_NODES) AS DEPARTMENTS,
       CAST(COLLECT(AREA_NODES)       AS TREE_NODES) AS AREAS,
       CAST(COLLECT(CENTRE_NODES)     AS TREE_NODES) AS CENTRES
FROM (
        SELECT ROWID RID,
                NODE_LEVEL,
                TREE_NODE(NODE_ID, NODE_VALUE) AS NODE
          FROM TEST_COLL
PIVOT (MAX(NODE) FOR NODE_LEVEL IN (
                                     1 AS REGION_NODES,
                                     2 AS DEPARTMENT_NODES,
                                     3 AS AREA_NODES,
                                     4 AS CENTRE_NODES
REGIONS(NODE_KEY, NODE_NAME)                         DEPARTMENTS(NODE_KEY, NODE_NAME)                     AREAS(NODE_KEY, NODE_NAME)                           CENTRES(NODE_KEY, NODE_NAME)
TREE_NODES(TREE_NODE('1', 'A'), TREE_NODE('5', 'E')) TREE_NODES(TREE_NODE('6', 'F'), TREE_NODE('2', 'B')) TREE_NODES(TREE_NODE('7', 'G'), TREE_NODE('3', 'C')) TREE_NODES(TREE_NODE('8', 'H'), TREE_NODE('4', 'D'))
SQL> SY.

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Hai all,
I am using aggregate function as follows
select max(c.id) from customer as c
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Regards
Somaraju

Beevin
Both two are not even validated,
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Aggregate function for a report that has sets

My report combines similar analysis into sets. I need to apply aggregate function such as Max() to the resulting columns. I tried but Analytics doesn't like that. Can someone tell me if this is supported or not? If not, what would be a workaround?

Have you tried placing the results into a pivot table then assigning this to display MAX results

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Using an Aggregate Function in a Sub-SELECT

Ok. I have this Sub-SELECT and I'd like to base my outside query based on the resyult set of my inner Sub-SELECT which contains an Aggregate function.
Is that possible???
Here's the Query...
SELECT *
FROM CUSTPRO.CPM_PND_TRAN_HDR CPMPNDTH
INNER JOIN (SELECT CPMPNDT2.ky_pnd_seq_trans,
CPMPNDT2.id_ba_esco,
CPMPNDT2.ky_ba,
CPMPNDT2.ky_enroll,
MAX(CPMPNDT2.dt_billed_by_css)
FROM CUSTPRO.CPM_PND_TRAN_HDR CPMPNDT2
WHERE CPMPNDT2.ky_pnd_seq_trans IN (6544937)
GROUP BY CPMPNDT2.ky_pnd_seq_trans,
CPMPNDT2.id_ba_esco,
CPMPNDT2.ky_ba,
CPMPNDT2.ky_enroll) DERIVE1
ON CPMPNDTH.id_ba_esco = DERIVE1.id_ba_esco
AND CPMPNDTH.ky_ba = DERIVE1.ky_ba
AND CPMPNDTH.ky_enroll = DERIVE1.ky_enroll
AND CPMPNDTH.dt_billed_by_css = ????DERIVE1.MAX(CPMPNDT2.dt_billed_by_css)???
How can I designate that last qualifier ????....
PSULionRP

You should give your aggregate function a column-alias as in:
SELECT *
FROM   custpro.cpm_pnd_tran_hdr cpmpndth
       INNER JOIN (SELECT   cpmpndt2.ky_pnd_seq_trans,
                            cpmpndt2.id_ba_esco,
                            cpmpndt2.ky_ba,
                            cpmpndt2.ky_enroll,
                            Max(cpmpndt2.dt_billed_by_css) as XXX    -- ADDED THIS.
                   FROM     custpro.cpm_pnd_tran_hdr cpmpndt2
                   WHERE    cpmpndt2.ky_pnd_seq_trans IN (6544937)
                   GROUP BY cpmpndt2.ky_pnd_seq_trans,
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                            cpmpndt2.ky_ba,
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/

Aggregate functions and normal function in SELECT statement

hi
i am using MS Access DataBase ...
i have lot of integer coloumns in my Database
i want to retrieve the coloumn values as well as the min , max and avg of that coloumn
i dont know whether its possible to do in a single statement or not
generally if we retrieve the values of a particular coloum
we say " SELECT length FROM TABLENAME WHERE somecondition"
and then get the values as int len = rs.getInt("length")..... over a loop
but how to retieve the value of an aggregate function?
like if i say "SELECT avg(colname),max(colname),min(colname) FROM TABLENAME WHERE somecondition"
how do i retrieve this value ???
i dont know if its possible or not ....pls help.........

Give names too each column
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Problem with aggregate function

Hello,
the prerequisite is to have a table with the following columns (#id, a_date).
Now the task is to select the maximum date from a range of rows of this table
select max(t.a_date)
from the_table t
where <condition to get only some rows of the_table>
and to get the id of the record which holds the maximum date. That's where the problem is located. It should look like the following code (yes, I know this cannot work because grouping by the id makes the aggregate senseless) just to make clear what I want to do.
select max(t.a_date), t.id
from the_table t
where <condition to get only some rows of the_table>
group by t.id
Does anybody have any idea how to solve the problem?
With regards,
Cosima
Message was edited by:
Cosima Laube

Hi all,
as the condition in the where-clause is very complex, I decided to use the solution with the FIRST function. After googling and reading a bit, I have just two more questions for my deeper understanding:
1) am I right that both snippets below do exactly the same?
SELECT MAX (t.a_date)
, MAX (t.ID)KEEP (DENSE_RANK FIRST ORDER BY t.a_date DESC)
FROM the_table t
WHERE <condition to get only some rows of the_table>
SELECT MAX (t.a_date)
, MAX (t.ID)KEEP (DENSE_RANK LAST ORDER BY t.a_date ASC)
FROM the_table t
WHERE <condition to get only some rows of the_table>2) can I use als the min function for t.ID as there the aggregate function does not have any effect (but is necessary in order to use KEEP and FIRST or KEEP and LAST)?
With regards,
Cosima
Message was edited by:
Cosima Laube

Aggregate functions like 'max' in XQuery..

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