FROM clause query dara block

Hi,
A data block which was created using FROM clause query, can be set as master block of another block? So i want to build a detail block and the master block being the 1st block, made with FROM clause query.
Thanks

i observed that a block created with FROM clause query cannot be a detail block, but it can be a master block. Correct?Yes, a From Clause based Block can be the master table in the Master - Detail relationship. I have successfully created a Form with this type of relationship! (I found my demo - I had it reversed).
I tried to create a FROM clause data block as detail block (and set a relationship with a master block) but i encountered an error at the relation and i deleted it (also the automatically generated triggers).This was my experience when I attempted a demo form that had the From Clause based block as a Detail in the Master - Detail relationship. The error in the On-Populate-Details triggers was easily fixed (the query has to be wrapped in parenthesis) but when I ran the form there was no coordination between the blocks.
but anyway, are these things written in the documentation?Not that I have ever found. It was always my understanding that if Oracle considered the data block to be a "base table block" (eg; block property Database Data Block = Yes) then all of the features of a base table block were available. The only thing I found in the documentation (Forms Help system - search on: "About creating a Master-Detail Relationship" and open the resulting document) indicated that a relationship should not be created where the detail block is based on a procedure, but it was OK if the master block was based on a procedure (see the Limitations section of the aforementioned document). I guess you could infer that this limitation applies to From Clause based blocks as well, but this is not explicitly stated in this document.
Craig...

Similar Messages

Using FROM clause query in block

I have a block using a FROM clause query instead of a table. I have two items in the block that correspond to the select statement. Here's the SQL statement I've entered:
SELECT BEZEICHNUNG, ZEIT_TYP_NR
FROM ZEIT_TYPE
WHERE ZEIT_TYP_NR IN
(SELECT ZEIT_TYP_NR
FROM PROM_ZEIT_TYP
WHERE PROM_TYP_NR = :GLOBAL.PROM_TYP_NR)
When I run forms, it ADDS to my SQL statement!! Here's what it does:
SELECT BEZEICHNUNG,ZEIT_TYP_NR
FROM (SELECT BEZEICHNUNG, ZEIT_TYP_NR FROM ZEIT_TYPE) WHERE ZEIT_TYP_NR IN
(SELECT ZEIT_TYP_NR
FROM PROM_ZEIT_TYP
WHERE PROM_TYP_NR = :1)
can anyone tell me why it's adding this first line to my select statement??

"a from clause query" is the rather strange name forms uses for what is generally known as in an in-line view.
Your in-line view is being treated by forms the same way as it would a table, it sticks a SELECT, a list of columns determined from the database items in the block and a FROM on the beginning. If the user specifies query criteria in enter-query mode it will quite correctly apply the where clause to the outer select rather than to the in-line view.

SET_BLOCK_PROPERTY('QUERY_DATA_SOURCE_NAME') with FROM clause query data block

Two block :
- Block A based on table
- Block B based on FROM clause query
In WHEN-NEW-RECORD-INSTANCE of block A, I perform a SET_BLOCK_PROPERTY('BLOCK_B','QUERY_DATA_SOURCE_NAME','(...)'); and then query block B (... depends on value taken by 'code' column in block A).
At runtime it works till 'code' does not change (query_data_source_name does not change) but when I navigate to a record having a different 'code', it got the folowing message :
41380 - Cannot set the blocks query data source.
Any idea or suggestion ?

Hello all i m trying dynamically change query_data_source_name but its not working.
i did the followings
Forms(10g2) block level:Query_data_source_type
Query_data_source_name:SELECT 1,2,3,4,5 FROM dual;
in control Block:
when_button_press my code is
GO_BLOCK('blk_query');
Clear_Block(No_Validate);
set_block_property('blk_query',query_data_source_name,
'SELECT col1,col2,col3,col4,col5 FROM mytable');
execute_query;
same result:unable to query error.
any one can help me regarding this issue.

Block based on "From clause query" and substitution variable

Hi Folks,
I have a "From clause query" block type, which is based on query that uses a substitution variable (:BLOCK.COLUMN) from previous block. When I run a query, then I obtain an error: ORA-01008: not all variables bound.
My query looks like:
select seq_no, prod_code, descr, curr_code,
       max(decode(sched_type_code,'ROLLOVER',amt,0)) OUTSTD_DRAW,
       max(decode(sched_type_code,'INTCHG',amt,decode(sched_type_code,'FEEREC',amt,0))) OUTSTD_INTEREST_FEE
from
    select r.fac_no, r.prod_code, f.descr, r.prod_seq_no seq_no, r.curr_code, r.sched_type_code,sum(nvl(rep_amt,0)) amt
      from repay_scheds r,
           fac_prods f
     where r.fac_no = f.fac_no
       and r.prod_code = f.prd_code
       and r.prod_seq_no = f.seq_no
       and r.fac_no = :B2.FAC_NO
       and r.trans_ref_from is not null
       and r.status         <> 'P'
    group by r.fac_no, r.prod_code, f.descr, r.prod_seq_no, r.curr_code, r.sched_type_code
group by seq_no, prod_code, descr, curr_code
having max(decode(sched_type_code,'ROLLOVER',amt,0)) >0 or max(decode(sched_type_code,'INTCHG',amt,decode(sched_type_code,'FEEREC',amt,0))) > 0Once I replace that substitution variable in query condition with some exact test number then it works fine.
select seq_no, prod_code, descr, curr_code,
       max(decode(sched_type_code,'ROLLOVER',amt,0)) OUTSTD_DRAW,
       max(decode(sched_type_code,'INTCHG',amt,decode(sched_type_code,'FEEREC',amt,0))) OUTSTD_INTEREST_FEE
from
    select r.fac_no, r.prod_code, f.descr, r.prod_seq_no seq_no, r.curr_code, r.sched_type_code,sum(nvl(rep_amt,0)) amt
      from repay_scheds r,
           fac_prods f
     where r.fac_no = f.fac_no
       and r.prod_code = f.prd_code
       and r.prod_seq_no = f.seq_no
       and r.fac_no = 2012500
       and r.trans_ref_from is not null
       and r.status         <> 'P'
    group by r.fac_no, r.prod_code, f.descr, r.prod_seq_no, r.curr_code, r.sched_type_code
group by seq_no, prod_code, descr, curr_code
having max(decode(sched_type_code,'ROLLOVER',amt,0)) >0 or max(decode(sched_type_code,'INTCHG',amt,decode(sched_type_code,'FEEREC',amt,0))) > 0How can I use substitution variable within query for "From clause query" block type? Or any other way how to get the same result?
Thanks for your reply.
Tomas

I have a solution:
Before entering block I'm calling function, that populates my block:
PROCEDURE POP_<<MY_BLOCK>>_BLOCK IS
query_txt varchar2(2000);
BEGIN
   query_txt := '(select seq_no, prod_code, descr, curr_code,
                        max(decode(sched_type_code,''ROLLOVER'',amt,0)) OUTSTD_DRAW,
                        max(decode(sched_type_code,''INTCHG'',amt,decode(sched_type_code,''FEEREC'',amt,0))) OUTSTD_INTEREST_FEE
                                              from
                                                 select r.fac_no, r.prod_code, f.descr, r.prod_seq_no seq_no, r.curr_code, r.sched_type_code,sum(nvl(rep_amt,0)) amt
                                                   from repay_scheds r,
                                                        fac_prods f
                                                  where r.fac_no = f.fac_no
                                                    and r.prod_code = f.prd_code
                                                    and r.prod_seq_no = f.seq_no
                                                    and r.fac_no = '||:B2.FAC_NO||'
                                                    and r.trans_ref_from is not null
                                                    and r.status         <> ''P''
                                                 group by r.fac_no, r.prod_code, f.descr, r.prod_seq_no, r.curr_code, r.sched_type_code
                                             group by seq_no, prod_code, descr, curr_code
                                             having max(decode(sched_type_code,''ROLLOVER'',amt,0)) >0 or max(decode(sched_type_code,''INTCHG'',amt,decode(sched_type_code,''FEEREC'',amt,0))) > 0)';
   Go_Block('<<MY_BLOCK>>' );
   Clear_Block ;
   Set_Block_Property( '<<MY_BLOCK>>', QUERY_DATA_SOURCE_NAME, query_txt) ;
   -- populate my block --
   Execute_Query ;
END;Thanks,
Tomas

Block based on from clause query

Hi all...
I am using forms 10g .....
When I wanted block based on from clause query...
I used this query ( SELECT * FROM exit INNER JOIN enter ON exit.ent_num = enter.ent_num where enter.depart=1)...
When I run form .....
frm-40505 oracle error unable to perform query
Thank you
Edited by: osa3_12 on Dec 10, 2009 4:33 AM

hi
try something like this.
1* select empno,ename from emp where empno=empno order by 1
SQL> /
     EMPNO ENAME
      7000 Sarah
      7369 SMITH
      7499 ALLEN
      7521 WARD
      7566 JONES
      7654 MARTIN
      7698 BLAKE
      7782 CLARK
      7788 SCOTT
      7839 KING
      7844 TURNER
     EMPNO ENAME
      7876 ADAMS
      7900 JAMES
      7902 FORD
      7934 MILLER
      8898 Sheela
16 rows selected.
1* select empno,ename from emp where empno=7000
SQL> /
     EMPNO ENAME
      7000 Sarah
SQL> sarah

Form blows up when clicked in data block using a FROM clause query

Hi,
I have a form that has two blocks. The detail block is based on a "FROM query clause" in the 'Query Data Source Type' in the block Properties.
I have a simple select in the 'Query Data Source Name'.
I made sure the select is enclosed in parenthesis and the alias names in the SELECT are the same as the ITEMS defined in the block
The data needs to be displayed in a tabular fashion.
When I run the form, the data is displayed correctly..but when I click the mouse on any item of this block or try to scroll down, everything just blows up and it closes my form.
I have made sure both blocks have the same properties. But, this seems to happen no matter what.
Any help in regard is greatly appreciated.
Thanks much,
Vijji

This is how I set the relationship for the detail block say BLOCK2.
1. I first do this:
Database Data Block = YES
Query Allowed = YES
Query Data Source Type = FROM clause query Query Data Source Name = ( select jio.order_header_id order_header_id, jii.item_code item_code, SUM(jii.item_qty) item_qty from joe_indv_items jii, joe_indv_orders jio where jii.indv_order_id = jio.indv_order_id group by jio.order_header_id, jii.item_code )
The master and detail need to be tied by the order_header_id which I can get from the header block.
2. In the WHEN-NEW_BLOCK-INSTANCE trigger for BLOCK2, I wrote the following where I dynamically pass the order_header_id:
DECLARE
q varchar2(1000);
BEGIN
     q := '(SELECT jio.order_header_id order_header_id,
     jii.item_code item_code,
     SUM(jii.item_qty) item_qty
     FROM joe_indv_items jii, joe_indv_orders jio
     WHERE jio.order_header_id = ' || :HEADERS.order_header_id||'
     AND jii.indv_order_id = jio.indv_order_id
     GROUP BY jio.order_header_id, jii.item_code )';
     CLEAR_BLOCK;
SET_BLOCK_PROPERTY('BLOCK1', QUERY_DATA_SOURCE_NAME, q);
EXECUTE_QUERY;
END;
I am not sure if I should write the exact select statement in the Query Data Source Name or not.
Please advice.
Thanks much,
Vijji

Insert in a "FROM clause query" block

I have a block based on "FROM clause query" (querying two different tables). I want to be abble to insert in this block. I wrote the DML code to insert in both tables, but I then need to stop forms who try to insert by itself, because it fails and rollback my change. How can I do this ?

If you have Oracle Server 8.1.6+ you can
create a database view with these two tables
and create a "instead of" trigger to insert
in both tables. It will be faster to
execute, your Forms becomes simpler and it
is easier to manage. Example from the
Oracle Server documentation :
CREATE TABLE customers_sj
( cust NUMBER(6),
address VARCHAR2(50),
credit NUMBER(9,2) );
CREATE TABLE customers_pa
( cust NUMBER(6),
address VARCHAR2(50),
credit NUMBER(9,2) );
CREATE TYPE customer_t AS OBJECT
( cust NUMBER(6),
address VARCHAR2(50),
credit NUMBER(9,2),
location VARCHAR2(20) );
CREATE VIEW all_customers (cust)
AS SELECT customer_t (cust, address, credit, 'SAN_JOSE')
FROM customers_sj
UNION ALL
SELECT customer_t (cust, address, credit, 'PALO_ALTO')
FROM customers_pa;
CREATE TRIGGER instrig INSTEAD OF INSERT ON all_customers
FOR EACH ROW
BEGIN
IF (:new.cust.location = 'SAN_JOSE') THEN
INSERT INTO customers_sj
VALUES (:new.cust.cust, :new.cust.address,:new.cust.credit);
ELSE
INSERT INTO customers_pa
VALUES (:new.cust.cust, :new.cust.address, :new.cust.credit);
END IF;
END;
null

Block with query data source tipe: from clause query

I have a block that have this property.
But now I want to change data.
Do you know how to do it?

A from clause query does what is says: it can only query data. For DML operations use Table/Procedure.
hth,
J

From Clause Query block

I'm using a from clause query block.
I'm being prompted to use a on-lock trigger, if I have to update an item in my said block.
1.What is the purpose of on-lock trigger in the given scenario, can I just use a null in the trigger.
2.Further, why is it necessary to set the database item property to yes for all items in a from clause query block?

The nature of use of the said from clause query based form I have explained above is that it is used to primarily set a No_change_flag from the screen in different loan type tables.
If the concerned user decides that a loan should not be modified, he will come to this screen and query for that loan type, and check the no_change_flag. Then from the when button pressed trigger we go and update that respective loan type table and set the no_change_flag to YES.
We have 4 loan type tables.Some times the user might choose to query by loan_date , and that will return multiple loans belonging to multiple loan types. In such a scenario we update multiple loan tables wherein the loan
should not be changed.
Actually we loop through the block and if the no_change_flag is chekced to YES, and then we update that respective loan type table. Yes when we are looking and issuing updates, and before the commit_form is issued at the end of the loop, in between some other user tries to update the row locked for update by us, then they will automatically get the appropriate message.
I dont see the need in the above case to code anything else than NULL;
Do anyone see this in a different way, or I'm I missing any impact the above functionality might cause?

From Clause query with form variables

forms 9.0.4 rdbms 9.2
Is it possible to create a From Clause query with form variables generated from another block (but in the same form)? I am not having any success.
I searched Metalink. It appears that according to DOC ID # 69884.1, in Forms 6i, this is not possible. Metalink suggest in DOC ID 104771.1 implementating a dynamic From Clause, but when I duplicate the example on my system, I receive an Oracle error. Further investigation from the web form (DISPLAY ERROR) indicates that the system does not see the dynamic value.
Has anyone else run into this error? Has this been fixed in forms 9.0.4 and I am just missing something? Does a dynamic from clause query work? Can anyone point me to an example or post an example or offer any advise.
thanks in advance

As far as I know it is not possible to use block items in a from clause query in forms 9.0.4. Here is my solution for a From-Clause-Query via the 'Query-Data-Source-Name-Property':
To use the values of the block items in my from clause query I implemented a database package with getter and setter routines for the block item values I needed for the query.
In the Key-Exeqry-Trigger of the From-Clause-Query-Block I set the global package variables with values of the block-items I am interested in. In the From-Clause-Query I used the values in the where-clause via package functions which return the global package variables.
Hope my solution will work for your problem.

How to use From clause as a block datasources

Hi,
I want to know how to use from clause as a block datasource.
Could anyone give me an example to do that? I couldn't find it
in the help file.
I sincerely ask someone help me.
Many thanks
Diana

Diana,
I presume you are getting a "FRM-40505: error unable to perform
query" when you try to execute query. I suggest you select the
"Display Error" item from the "Help" menu to see the query that
Oracle is generating. If the query that Oracle generates as a
result of your "Query data source name" is not formed correctly,
you will get the FRM-40505 error.
Copy and paste the query that is displayed into SQLPLUS and test
to see what happens when you try to execute the query from
SQLPLUS. That will give you a better idea of what the cause of
the problem is.
From your example, a query that works should look like "select
c_no from (select c_no from books)".
Keep in mind that for blocks based on FROM clause, the query that
produces the data is of the form :
SELECT <all columns in the block>
FROM <select statement entered in the "Query Data Source Name"
blockproperty>
The data source for the block is the select statement embedded in
the from clause.
Hope this helps.

Master detail with from clause query

Hi!
I have 2 blocks: master and detail. The master block is based on a from clause query. Since I have to insert, update and delete on this block I have created the on-insert, on-update, on-delete and on-lock triggers (and the respective procedures).
In this block I have on-populate-details and pre-delete triggers created by the master-detail relation.
Now I have a problem!
Since I only want to commit to db when I click the "ok" button and I want to insert and delete records from these 2 blocks, when I insert records into the detail block (and master too), it forces me to save changes if I change the focus of the current record of de master block to another record within the same block.
How can I do this in order to insert records saving changes only when I click the button?
Thanks!
Ana

I think that it is intended behaviour: when detail records are populated and there are uncommited changes so Forms asks if user wants to save changes.

FROM CLAUSE QUERY, how to construct?

Have always used the data block wizard so am probably missing something quiet simple. I have created a new form and am manually creating a simple test block. What i've done so far:
Block Properties
Database Data block: No
Enforce Primary Key: Yes
Query allowed: Yes
Query data source type: FROM clause query
Query data source name: select department_id, department_name from departments
Query data source columns: department_id (number), department_name (varchar2)
Created a canvas with and put two items, department_id (set as Primary key) and department_name on it.
When i run the form i get... FRM-41003 This function cannot be performed here.
What am i doing wrong and what steps should i be taking?
Gus
Oracle 10g

first of all you should set the DATABASE DATA BLOCK property to YES, not NO.
it is a database block though not based on a TABLE, rather on a FROM CLAUSE QUERY, but it is a database block.
another thing, when you run the form, what function you are trying to perform when you get the error: "FRM-41003 This function cannot be performed here."
i guess you are trying to query the data. if its same, then that should be resolved once you set the DATABASE DATA BLOCK to YES.

From Clause Query

Designer Version 6.5.95.4.8
Configuration: 4.0.12
Release 4.10
Database 10g
Forms [32 Bit] Version 6.0.8.25.2 (Production)
Can someone help me with From Clause query in Designer?
Designer Help files do not seem to cover this in depth.
Here is what I did so far.
1. Created module component
2. Set Datasource Type to Query
3. Code to set the query at run time:
      GO_BLOCK('LINK_DTL');
      CLEAR_BLOCK(NO_VALIDATE);
      vFromClauseQuery := '(SELECT DISTINCT p_code, e_code '||
                           'FROM code_table '||
                           'WHERE L_YEAR = '||:LINK.l_year||' AND L_SEQ = '''||:LINK.l_seq||''')';
      SET_BLOCK_PROPERTY('LINK_DTL',QUERY_DATA_SOURCE_NAME,vFromClauseQuery);
      DO_QUERY;
Also I created unbound columns :p_code and :e_code for the block, to receive the results from the query (is that the correct way to do it?)
When I run the form, my block is empty, and if I open the form in form builder, the block that I had set to have datasource of "query" has datasource type of "table" ???
Thanks

Bind variables cannot be referenced in from clause query (this is a bug/enhancement 767062).
But, in PRE-QUERY trigger we can write built-in
SET_BLOCK_PROPERTY (block_name, QUERY_DATA_SOURCE_NAME, value);
For example:
DECLARE
l_deptno dept.deptno%TYPE := 50;
l_from_clause VARCHAR2 (1000);
BEGIN
l_from_clause :=
'(SELECT deptno, dname, loc FROM dept WHERE deptno < ' || l_deptno || ')';
SET_BLOCK_PROPERTY (:SYSTEM.TRIGGER_BLOCK, QUERY_DATA_SOURCE_NAME, l_from_clause);
END;
Regards,
Zlatko Sirotic

FROM Clause Query and Invisible records :(

HI:
My form has a block based on a FROM clause query (QUERY DATA SOURCE TYPE).
This works fine with no errors. Count hits suggests that it is retrieving records but my Item is not displaying the records. I have nine records in total but all fields are blank even though I can 'scroll' through the nine (invisible) records.
Strange, any ideas people ?
thanks.
N.

Thanks you for the reply but its not the cause of the 'probem'. My items are in a multi record block ( I have tried single item bock / No Items displayed 1 etc..) but to no avail.
The strange thing about it is that I can Message(:blk.item) and the value displays on the Message bar but there are no values displayed in the Canvas Item at runtime ????? Very strange or does someone know something I dont.
I can even scroll to the end of the record set ( 9 recs).
I have never caome across this before has anyone else ?
Thanks
N.

FROM clause query dara block

Similar Messages

Maybe you are looking for