Sql query hint - first filter , then join

hello
i have a following query (based on OWB data model views)
select /* + LEADING(all_iv_xform_map_components all_iv_xform_map_parameters) USE_NL(all_iv_xform_map_components all_iv_xform_map_parameters) */
comp.map_name,
comp.operator_type ,
param.map_component_name ,
param.parameter_name,
md.map_component_id,
md.map_component_name,
mp.MAP_COMPONENT_ID ,
mp.MAP_COMPONENT_NAME
from all_iv_xform_map_components comp,
all_iv_xform_map_parameters param,
ALL_IV_XFORM_MAP_PROPERTIES mp,
ALL_IV_XFORM_MAP_DETAILS md
where comp.map_name = nvl('&load_map_name','LOAD_MY_TABLE')
and param.map_component_id = comp.map_component_id
and param.map_component_id=md.map_component_id
and md.map_component_id=mp.map_component_id
what i want to achieve is to force the query to first filter out the table all_iv_xform_map_components and do the join with the remainign tables on the filtered rows only;
i tried using the above hint but its not working; oracle still grabs to the full table: ALL_IV_XFORM_MAP_PROPERTIES
id appreciate any tips
thanks
rgds

HI
for the sake of the case:
i ran your query and its giving the clob error
i hard coded the com id's and its not giving error anymore
WITH comp AS
(   SELECT --+materialize
        comp.map_name,
        comp.operator_type,
        comp.map_component_id,
        param.map_component_name ,
        param.parameter_name
    FROM
        all_iv_xform_map_components comp,
        all_iv_xform_map_parameters param
    WHERE
        comp.map_name = nvl('&load_map_name','LOAD_MY_TABLE)
    AND param.map_component_id = comp.map_component_id
    AND param.map_component_id in ('3931622','3931625','3931624','3931623','3931626') --> without this line its giving clob error, but these are the only comp ids retured by that query
select
    comp.map_name,
    comp.operator_type ,
    comp.map_component_name ,
    comp.parameter_name,
    md.map_component_id,
    md.map_component_name,
    mp.MAP_COMPONENT_ID ,
    mp.MAP_COMPONENT_NAME
from
    comp,
    ALL_IV_XFORM_MAP_PROPERTIES mp,
    ALL_IV_XFORM_MAP_DETAILS md
where
    comp.map_component_id = md.map_component_id
and comp.map_component_id = mp.map_component_id
/

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SQL Query (not OMBPlus) to get Join- and Filter-Conditions

Hallo,
I allready used the Views ALL_IV_XFORM_... to get serveral informations on my mappings using SQL-Queries,
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but how can I retrieve the Conditions of an Join- or Filter-Transformation using SQL and not OMBPLUS?if i understood the question correctlly then
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select * from table_1 where table_1.col1='A';

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1.) Answers references RPD objects and NOT database objects. (ref. "select distinct student_id from DatabaseName.B"
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Hi All,
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B 1
1 A
1 B
2 null/0
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select
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SELECT
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group by ID
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AND B.STA = A.ID
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( TXN NUMBER,
ID VARCHAR2(20),
STA VARCHAR2(20) )
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insert into test_STA Values (-1, '1', '1')
insert into test_STA Values (-1, '1', 'A')
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insert into test_STA Values (-1, 'A', '1')
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insert into test_STA Values (-1, '2', '0')
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Well
1 is a parent, with A and B as children.
2 is a parent with no children.
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Paul

Hi,
If you can guarantee, that every child has also a record then following query returns your result:
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from test_STA
group by ID
having count(*) = 1
ID COUNT(*)
2     1
A     1
B     1

Sql query to dynamically filter out records -help needed

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Here's one way:
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Hello,
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Hi guys im trying to carry out an sql query
Im using a left join to do a query, which gives me a set of results:
select COURSESTUDENT.StudentNo, COURSESTUDENT.CourseCode, COURSESTUDENT.Year, MARKS.ExamMark, MARKS.EntryNo FROM COURSESTUDENT LEFT JOIN MARKS ON COURSESTUDENT.StudentNo=MARKS.StudentNo AND COURSESTUDENT.CourseCode=MARKS.CourseCode AND COURSESTUDENT.Year=MARKS.Year
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I would like to do the following select statement on the results of the query above..
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Hi,
I have table having following schema:
PRODUCT_ID         INT
DATE                   DATETIME
ITEMS_SOLD         INT
This table contains data for a week (sunday to saturday). I want to write an SQL query to get (filter out) PRODUCT_ID of products which has same no. of ITEMS_SOLD for all 7 days. Also for given PRODUCT_ID I need to find the longest period of successive days where the no. of ITEMS_SOLD is same for all days in this period. Eg.(PRODUCT_ID 23 was sold as following along the week in no. of units sold: 4,6,6,6,6,7,4 .So the longest period is *4 days* from Monday to Thursday.) The first condition is special case of second condition where no. of days is 7.
Any help to get the SQL query will be appreciated.
Thanks,
Akshay.

PRODUCT_ID      DATE           ITEMS_SOLD
1          10/10/2011     3
1          11/10/2011     3
1          12/10/2011     3
1          13/10/2011     3
1           16/10/2011     5
2          10/10/2011     4
2           11/10/2011     4
2          12/10/2011     4
2          13/10/2011     4
2           14/10/2011     4
2          15/10/2011     4
2          16/10/2011     4
Output:
PRODUCT_ID ITEMS_SOLD NO_OF_DAYS
1          3                4
2          4               7
Explanation of results:
The table to be queried contains data for 1 week: from 10/10/2011(Sunday) to 16/10/2011(Saturday). Now, product with PRODUCT_ID '1' was sold on dates 10,11,12,13,16. Out of these 5 days 3 units were sold on 4 successive days (from 10-13). So output should be like :
PRODUCT_ID ITEMS_SOLD NO_OF_DAYS
1          3               4
as longest period of successive days is 4 where same no. of units were sold i.e 3 units (other period is of 1 day on 16th ).
For PRODUCT_ID 2 we have only one period of 7 days where 4 units were sold each day. So we output :
PRODUCT_ID ITEMS_SOLD NO_OF_DAYS
2           4               7
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-Akshay.

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Hi,
of other string attributes show the correct length then this indeed sounds like a bug. However, a bug is a bug when it is getting filed.
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Hi guys im trying to carry out an sql query
Im using a left join to do a query, which gives me a set of results:
select COURSESTUDENT.StudentNo, COURSESTUDENT.CourseCode, COURSESTUDENT.Year, MARKS.ExamMark, MARKS.EntryNo FROM COURSESTUDENT LEFT JOIN MARKS ON COURSESTUDENT.StudentNo=MARKS.StudentNo AND COURSESTUDENT.CourseCode=MARKS.CourseCode AND COURSESTUDENT.Year=MARKS.Year
but I would like to do a select on this result but do not want to use a create view as if more than one person access this page at a time then if the servlet tries to create the view an error will occur.
I would like to do the following select statement on the results of the query above..
select * from (above) where CourseCode='ELE304' AND Year=1999;
Is this possible, im using postgres..
Please help......
thanks
tzaf

Sorry, I have never used postgres, but in several databases, the following syntax would work and provide the correct ResultSet.
select *
from (
     SELECT
         COURSESTUDENT.StudentNo,
         COURSESTUDENT.CourseCode,
         COURSESTUDENT.Year,
         MARKS.ExamMark,
         MARKS.EntryNo
     FROM
         COURSESTUDENT LEFT JOIN MARKS ON
         COURSESTUDENT.StudentNo=MARKS.StudentNo AND
         COURSESTUDENT.CourseCode=MARKS.CourseCode AND
         COURSESTUDENT.Year=MARKS.Year
     ) A
WHERE
    CourseCode='ELE304' AND
    Year=1999

Query hint to force SQL to use a temporary table in a CTE query?

Hi,
is it possible to tell SQL Server to create a temporary table by itself when I'm using a CTE in my query?
I have a query starting with a CTE where I group by my record, then another recursive CTE use the first CTE and finally my select statement like:
with cte as (select a,b,c,row_number() ... from mytable group by a,b,c)
, cte2(select .... from cte A where rownum =1
union all select ... from cte B inner join cte2 C on ......
select * from cte2
this query is very very slow, but if I store the first CTE into a temporary table and then cte2 consume my temp table rather than the CTE, the query is very fast.
creating the temp table took 10sec and the select took 20sec
while the initial query didnt return anything after 2minutes!!!
so what can I try to do to have the query running in less than 30sec without creating the temp table first?
is there a query hint which can be used to tell SQL Server to convert the CTE into a temp table?
as I have a lot of query to manage, I want to simplify my model without relying in temporary tables every time I suffer this issue...
thanks.

What is your SQL Server version?
There is no hint to materialize results of cte into a temp table, so the solution you tried is the best you can have.
I think the idea of materializing CTE into a temp table was already proposed on Connect. Try searching for this and vote.
For every expert, there is an equal and opposite expert. - Becker's Law
My blog
My TechNet articles

Cartesian join in the SQL query

Hi,
I have a problem when joining two tables that cannot join directly. As I read (please correct me if I'm wrong), two dims have to join by one fact in order to extract information from them. This way, I created logical source tables with SQL query that join both dims. So, if for example Dim A and Dim B cannot join directly, I created a "mapping table" which is a select that joins these 2 tables in the proper way and the fields are the row_wids from these tables. This way, I created the following model diagram for this relationship:
DimActivity -< FactMapping >- DimPNR
DimActivity -< FactActivity >- DimMapping
DimPNR -< FactPNR >- DimMapping
Now, I can extract information from both dims and their metrics, except in one case; If I extract info from ("Segment Designer") "Dim-Activity", "Dim-PNR", "Fact-Activity" and "Fact-PNR", I get a query that first calculates the metric from Activity, then calculates the metric from PNR, and when it joins both queries, I get cardinality because it doesn't join through the "mapping tables". The whole query is:
WITH
SAWITH0 AS (select sum(T690608."QTY") as c1,
T690608."ASSET_NUM" as c2
from "W_ASSET_D" T690608 /* Dim_W_ASSET_D */
group by T690608."ASSET_NUM"),
SAWITH1 AS (select sum(T682428."COST") as c1,
T682428."STATUS_WID" as c2
from "W_ACTIVITY_F" T682428 /* Dim_W_ACTIVITY_F */
group by T682428."STATUS_WID")
select distinct SAWITH0.c2 as c1,SAWITH1.c2 as c2,SAWITH1.c1 as c3,SAWITH0.c1 as c4
from
SAWITH0,SAWITH1
Why there is no condition joining SAWITH0 and SAWITH1? Is there a way to force this to be an inner join? I'm looking forward to your answer, since this problem is urgent within this project. Thank you in advance

Ok.
I assume that you have for one activity several asset PNR and for one asset several activity.
The factPNR is on this way a real bridge table. It's a way to be able to design a many-to-many relationship.
Have a look here for more detail on how to build a many-to-many relationship :
http://gerardnico.com/wiki/dw/data_quality/relationships#many-to-many
Therefore I assume that you want this design :
DimActivity -< FactActivity >- < FactPNR >- DimPNR and you will have :
DimActivity -< FactActivity >- < BridgeTable >- DimPNR How to build your bridge table ?
In the physical layer, :
* create a new table BridgeActivityPNR, open it and select "statement"
* enter your sql statement
SELECT DISTINCT A.ROW_WID ACTIVIDAD_WID, B.ROW_WID ASSET_WID
FROM W_ACTIVITY_F A,
W_ASSET_D B,
W_SRVREQ_D C,
X_S_CMPT_MTRC_F D,
X_S_ASSET_FEA_D E
WHERE A.X_SRA_SR_ID=C.INTEGRATION_ID AND
C.X_VLG_FLIGHT_ID=D.X_ROW_ID AND
D.X_ROW_ID=E.X_CM_ID AND
E.X_ASSET_ID=B.X_ROW_ID* add two columns in the column tab : ACTIVIDAD_WID and ASSET_WID
* create the physical join with the table FactActivity and DimPNR
* drag and drop in the business model your table BridgeActivityPNR
* in the BMM, create the complex join like this :
DimActivity -< FactActivity >- < BridgeTable >- DimPNR * open your logical bridge table and check the bridge table option.
And you are done if I didn't forget anything.
A complete example here :
http://gerardnico.com/wiki/dat/obiee/obiee_bridge_table

SQL Query to Join by Comma - Help an assistance

Hi,
Thanks for your help in advance.
Requirement is as follows.
Table1
=======
Col1 Col2
============
1 John
2 Jocky
3 Silk
Table2
========
Col1 Col2
=========
1 John, Marry, Joseph
2 Silk, David
3 Jocky, Prem
I need an sql query where the join condition has to satisfy as follows
Table1.col2=Table2.Col2 (If any of the col2 in table1 matches with Table2.Col2 i need to return the record).
How to do this.
Please guide me on this.

nazzu wrote:
Thanks a lot for your response ...
But if a table1 and table2 had different numbers of rows then ?
I may be behaving like a fool ... but my requrirement is such a fashion.
Please help ...
Thanks again for your help.
Edited by: nazzu on Mar 14, 2013 8:22 AMHi,
try to be clear in your requirement. You mentioned in your initial question:
I need an sql query where the join condition has to satisfy as followsWhat happen if you have different number of rows in table1 and table2?
Rows from table2 will be returned for any match in table1 if you are using a normal join. However if you have 2 rows in table1 that are matching table2 then that row in table2 will return twice.
Let me just show you an example:
WITH table1(col1, col2) AS
   SELECT 1, 'John' FROM DUAL UNION ALL
   SELECT 2, 'Jocky' FROM DUAL UNION ALL
   SELECT 3, 'Silk' FROM DUAL UNION ALL
   SELECT 4, 'Marry' FROM DUAL
, table2(col1, col2) AS
   SELECT 1, 'John, Marry, Joseph' FROM DUAL UNION ALL
   SELECT 2, 'Silk, David'          FROM DUAL UNION ALL
   SELECT 3, 'Jocky, Prem'          FROM DUAL
SELECT t2.col1, t2.col2, t1.col2
FROM table2 t2
       JOIN table1 t1
          ON(INSTR(', '||t2.col2||',', ', '||t1.col2||',')>0);
      COL1 COL2                COL2_1
         1 John, Marry, Joseph John
         1 John, Marry, Joseph Marry
         2 Silk, David         Silk
         3 Jocky, Prem         Jocky As you can see the first row from table2 is returned twice because it matches 2 records on table1.
In case you want to display only rows from table2 which has a match in table1 you can either do a distinct:
SELECT DISTINCT t2.col1, t2.col2
FROM table2 t2
       JOIN table1 t1
          ON(INSTR(', '||t2.col2||',', ', '||t1.col2||',')>0);
      COL1 COL2
         1 John, Marry, Joseph
         2 Silk, David
         3 Jocky, Prem        or use EXISTS operator:
SELECT t2.col1, t2.col2
FROM table2 t2
WHERE EXISTS (SELECT 1
                 FROM table1 t1
                WHERE INSTR(', '||t2.col2||',', ', '||t1.col2||',')>0
      COL1 COL2
         1 John, Marry, Joseph
         2 Silk, David
         3 Jocky, Prem   Regards.
Al

Is "Joins & For all entries" in same SQL Query Possible?

Hi all Professional,
Can we use "Inner Joins" and "For All Entries In" in the same SQL Query. if possible then pls clarify this query.
Here I am using three Transparent Table and fetching data from them.
SELECT abukrs abelnr ahkont axref2 ashkzg awrbtr agsber azfbdt azterm amwskz asgtxt axref1 agjahr abuzei
           bkunnr bwerks bmenge bmeins bmatnr bkoart
           cbukrs cbelnr cblart cbldat cbudat cxblnr cgjahr cstgrd cstblg cstblg c~xreversal
           INTO CORRESPONDING FIELDS OF TABLE it_bsid FROM ( ( bsid AS a
           INNER JOIN acctit AS b ON abukrs = bbukrs )
           INNER JOIN bkpf AS c ON cbukrs = abukrs
                               AND cbelnr = abelnr
                               AND cgjahr = agjahr )
           FOR ALL ENTRIES IN it_bkpf
              WHERE
                a~belnr EQ it_bkpf-belnr
            AND a~gjahr EQ it_bkpf-gjahr
            AND a~bukrs EQ it_bkpf-bukrs
            AND a~gsber IN so_bus.
After executing this query, I'm getting Dump Error.
Error analysis
    When the program was running, it was established that more
    memory was needed than the operating system is able to provide savely.
    To avoid a system crash, you must prevent this
    situation.
               Last error logged in SAP kernel
    Component............ "EM"
    Place................ "SAP-Server Development_DVL_01 on host Development (wp
     2)"
    Version.............. 37
    Error code........... 7
    Error text........... "Warning: EM-Memory exhausted: Workprocess gets PRIV "
    Description.......... " "
    System call.......... " "
    Module............... "emxx.c"
    Line................. 1886
Pls resolve, if anybody knows.
Thanks
Devinder

Hi,
During testing i notice that splitting into multiple selects does improve performance. But the best performance I achieved using DB Hints instead of splitting the select statements.
Generally performance of joins together with for all entries is bad.
However if you will look into SAP note 1662726 you will notice that this issue (bad performance in using join and for all entries together) has been addressed.
Even though the note is for HANA DB, FM RSDU_CREATE_HINT_FAE can be used independent of DB.
On HANA DB performance improvement is huge (i achieved 62 seconds using DB Hints compared to 1656 seconds using for all entries). On Oracle DB the same code initially run in 99 seconds with for all entries and with DB Hints in 82 seconds for ~ 1.000.000 records and ~660 seconds compared to 1349 seconds for ~8.000.000 records..
Sample code from SAP Note below:
Original statement:
SELECT COL1 COL2 COL3 COL4 COL5
FROM TAB1
INTO CORRESPONDING FIELDS OF TABLE LT_RESULT
FOR ALL ENTRIES IN LT_SOURCE_TMP
WHERE COL3 = LT_SOURCE_TMP-COL3
AND   COL4 = LT_SOURCE_TMP-COL4
AND   COL5 = LT_SOURCE_TMP-COL5
Revision:
DATA: L_T_TABLNM TYPE RSDU_T_TABLNM,
      L_LINES TYPE I,
      L_HINT TYPE RSDU_HINT.
APPEND 'TAB1' TO L_T_TABLNM.
L_LINES = LINES( LT_SOURCE_TMP ).
CALL FUNCTION 'RSDU_CREATE_HINT_FAE'
EXPORTING
    I_T_TABLNM   = L_T_TABLNM
    I_FAE_FIELDS = 3
    I_FAE_LINES = L_LINES
    I_EQUI_JOIN = RS_C_TRUE
IMPORTING
    E_HINT       = L_HINT
EXCEPTIONS
    OTHERS       = 0.
SELECT COL1 COL2 COL3 COL4 COL5
FROM TAB1
INTO CORRESPONDING FIELDS OF TABLE LT_RESULT
FOR ALL ENTRIES IN LT_SOURCE_TMP
WHERE COL3 = LT_SOURCE_TMP-COL3
AND   COL4 = LT_SOURCE_TMP-COL4
AND   COL5 = LT_SOURCE_TMP-COL5
          %_HINTS ADABAS L_HINT.
Best regards,
Octavian

Sql query hint - first filter , then join

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