FROM Clause query data source type

i do i get the result set of a FROM Clause datasource into an item.

A FROM clause may be used as the datasource for a data block. A FROM clause is a feature of the Oracle8 Server that allows you to nest a SELECT statement in the FROM clause of a SELECT statement. A FROM clause is a valid query block datasource, but it is not a valid DML block datasource. The value returned from a FROM clause is a subset of records from the original query.
FROM clauses are used to perform joins, lookups, and calculations without having to create a view on the server. FROM clauses can also be used to prototype views and to increase performance.
Using a FROM clause as a block datasource is similar to using an updateable join-view as a block datasource. However, a FROM clause provides more control, because the presence of a DBA is not required to define the view. You should note that the FROM clause produces results that are identical to an updateable join-view from the client side, but that there is no defined view on the server.
My question has not been answere and i hope the above copies explanation from forms6i documentation will help understand the question better.
Please Advise

Similar Messages

Block Property (Query Data Source Type)

Hello Friends
I am using Forms 6i.oracle 9i.
in the Block Property Pallete under Query Data Source Type there
are 4 Type is mentioned.i have used Table,From Clause Query but yet to use Transactional Trigger and Procedure.How to use this two and it will be very kind enough if u give any example about these twos.
Regards

There's a whole bunch of explanation about this subject in the online help of Forms. Just select the Query Data Source Type property and press F1. The initial explanation is very limited but there are a number of useful links under "Related topics"

Query Data Source Type

hi,
I can't create...
Query Data Source Type: FROM clause query
Query Data Source NAme: (select t.col1 as cl1,t.clo2 as cl2, m.col1 as cl3
from tab1 t, tab2 m)
WHERE clause: cl1=:master.col1 and cl3=:master.col3
is not work....
form's 6i
thank's
Jomar

You can not use where condition if query data source type is
From Clause Query.
Use DB view and filter data by Where clause in the block.
D

Query for records on a block with Query Data Source Type : Procedure

Hi All,
The veriosn of form I'm using is:
Forms [32 Bit] Version 6.0.8.23.2
I have a block based on a procedure.
But when I enetr-query and search for records specific to ceratin criteria even then the result of the Query is all records.
Is Query not allowed on a block with Query Data Source Type : Procedure.
Hope my question is clear.
Thanks in advance.
Regards
Arif

When you use a table based block, forms can construct any select with any where clause based on the given inputs. Using a procedure based block, forms cannot "know" which in or out parameter of the procedure corresponds to which item. Even if Forms could pass the value of an item to an argument automagically, the procedure would have to "do something" with the argument, and you´d have to code it.
So, any item that should be used in the where-clause must be mapped to an argument.
Perhaps it would be easier to use a table based block querying a view? For DDL, you could use an instead-of-trigger on the view.
Regards,
Gerd

Abnormal termination of runform when PROCEDURE is used as Query Data Source Type

I created a package with a procedure that returns a table of records. This
procedure tested OK in SQLPLUS. I then created a form and in this form a block
that used this procedure as the Query Data Source Name, and of course the Query
Data Source Type has been set to PROCEDURE. This form runs beautifully when the
number of records returned is small (a few hundreds). But when the number of
records is large (I have one case where the total number of records returned
was 11099) then it will crash. I also found that whenever this happens, there
will be a file in my C:\TEMP with funny namessuch as s90, s81, etc. They are
always the same size (5008 kBytes).
Anyone any ideas?
null

<BLOCKQUOTE><font size="1" face="Verdana, Arial">quote:</font><HR>Originally posted by Chandra movva([email protected]):
Create a view and base your block on view.That could solve the problem unless you have other requirements specifically.<HR></BLOCKQUOTE>
Chandra,
Thank you for your suggestion. Unfortunatel, we have requirements that translate to logics too complicated to be handled by views, and that is why we use PROCEDURES. This actually works very well and very fast, except when we have lots of records returned, then it fails. I am just wondering whether this is a configuration problem ???
Regards,
A. Leung
null

Using query data source type as procedure

Could anyone pls. let me know how to use the query data source type property as procedure? Is there any example or document where I can find the above info? Any help or reference to doc will be helpful...
Thanks in advance

Have a look at Note 66887.1 on MetaLink.

Query data source type = procedure or from clause

1)I have a form where a block is based on a from clause. In the source name I entered a simple sql statement.
Isn't the items suppose to show without any other action or
WHAT ELSE DO I NEED TO DO IN ORDER TO SEE THE BLOCK ITEMS EQUIVALENT TO THE COLUMNS IN THE QUERY?
2) I have a form where a block is based on a procedure.
First I created a package in a program unit with the procedures query_procedure, insert_procedure, update_procedure, delete_procedure and lock_procedure.
Then I set the query data source name to the package query_procedure. The columns and arguments were automatically filled by Forms - they are fine as well.
Forms automatically created the block triggers insert-procedure,delete-procedure, update-procedure and lock-procedure.
Everything seems to be fine but when I run the form and execute the query I get frm 40505 - unable to perform query.
What am i doing wrong?
This is the package:
PACKAGE pkgdeptemp IS
type dept_emp is record (
empno number(4),
ename varchar2(10),
job varchar2(9),
hiredate date,
sal number(7,2),
deptno number(2),
dname varchar2(14));
success constant number :=0;
type dept_emp_ref is ref cursor return dept_emp;
type dept_emp_tab is table of dept_emp index by binary_integer;
procedure query_procedure (resultset in out dept_emp_ref, p_empno in number);
procedure lock_procedure (dmlset in out dept_emp_tab);
procedure insert_procedure (dmlset in out dept_emp_tab);
procedure update_procedure (dmlset in out dept_emp_tab);
procedure delete_procedure (dmlset in out dept_emp_tab);
END;
PACKAGE BODY pkgdeptemp IS
function get_success return number is
     begin
          return(success);
     end;
procedure query_procedure (resultset in out dept_emp_ref, p_empno in number) is
begin
     open resultset for
          select e.empno, e.ename, e.job, e.hiredate, e.sal, e.deptno, d.dname
          from emp e, dept d
          where e.deptno = d.deptno
          and e.empno = nvl(p_empno, e.empno);
end query_procedure;
procedure lock_procedure(dmlset in out dept_emp_tab) is
     tempout number(4);
begin
     for i in 1..dmlset.count loop
          select empno
          into tempout
          from emp
          where empno = dmlset(i).empno
          for update;
     end loop;
end lock_procedure;
procedure insert_procedure (dmlset in out dept_emp_tab) is
     cursor c_dept (i binary_integer) is
     select deptno
     from dept
     where deptno = dmlset(i).deptno;
     tempout number(4);
begin
     for i in 1..dmlset.count loop
          open c_dept(i);
          fetch c_dept into tempout;
          if c_dept%notfound then
               insert into dept(deptno,dname)
               values(dmlset(i).deptno, dmlset(i).dname);
          end if;
          close c_dept;
          insert into emp (empno,ename,job,hiredate,sal,deptno)
          values (dmlset(i).empno, dmlset(i).ename, dmlset(i).job, dmlset(i).hiredate, dmlset(i).sal, dmlset(i).deptno);
     end loop;
end insert_procedure;
procedure update_procedure (dmlset in out dept_emp_tab) is
     cursor c_dept (i binary_integer) is
     select deptno
     from dept
     where deptno = dmlset(i).deptno;
     tempout number(4);
begin
     for i in 1..dmlset.count loop
          open c_dept(i);
          fetch c_dept into tempout;
          if c_dept%notfound then
               insert into dept(deptno,dname)
               values(dmlset(i).deptno, dmlset(i).dname);
          else
          update dept
          set deptno=dmlset(i).deptno,
          dname=dmlset(i).dname;
          end if;
          close c_dept;
     update emp
          set empno=dmlset(i).empno,
          ename=dmlset(i).ename,
          job=dmlset(i).job,
          hiredate=dmlset(i).hiredate,
          sal=dmlset(i).sal,
          deptno=dmlset(i).deptno;
     end loop;
end update_procedure;
procedure delete_procedure (dmlset in out dept_emp_tab) is
begin
     for i in 1..dmlset.count loop
          delete from emp where empno = dmlset(i).empno;
     end loop;
end delete_procedure;
END;

for ur q1:
create the text items manually in the layout editor or in the obj navigator then specify there properties manually in the the pallette.
database item = yes
column name = field name in ur select statement
for q2:
try running the form again and press F8 then if an error occur press F1 or shift F1 to show the error in ur code.
i suspect u forgot to specify a value for the in parameter the reason why u get an error that is specify the actual parameter for ur in argument then press F8.
enjoy!

Forms clause query data source data block in oracle forms

Hello experts,
I am new in oracle forms.I am using oracle forms 11g with weblogic 10.3.5 at windows 7.Through googaling I know how to create a database block,forms clause data block and stored procedure based datablock in oracle forms.I want to know that as in case of Database based datablock, could we commit form either on editing records or on insertion or deletion in data block.
I tried this but got error frm 40501.If we can perform editing and creation in such type of datablock then please tell me how.
Thank You,
regards
aaditya

When I base my datablock on a query using the "From Clause" property of the block query data source in the oracle Forms 6i,
I get the strange error
"ORA-00928: missing SELECT keyword"
The query I see in the Display Error in Help Menu is
SELECT DAY_NUMBER,CONSULTANT_ID,EVENT_ID,EVENT_NUMBER,SESSION_NUMBER,HOURS_UNPAID,HOURS_PAID,PAPERWORK FROM (EVENT_ASSIGNED_CONSULTANT) WHERE (CONSULTANT_ID=:1)
What should I do now?????? Please remove the brackets () from the table name.
Instead of (EVENT_ASSIGNED_CONSULTANT) use
EVENT_ASSIGNED_CONSULTANT

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.

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

Frm-41380 error - cannot set the blocks query data source

Fairly new forms so bare with me. I am creating a form based on one table. This table has one column that is a nested table.
table name: szrtime
table columns: szrtime_code, szrtime_styp_list
szrtime_styp_list is a table of varchar2(1).
main block is szvtime_block
the block that contains the nested table is szvtime_styp_block
I read that I could use a WHEN_NEW_RECORD_INSTANCE trigger on the main block to display the related nested table. I have tried the folllowing:
Declare
select_stmt Varchar2(512) ;
Begin
If :szvtime_block.szvtime_code Is not null Then
     select_stmt := '(SELECT column_value FROM TABLE ( SELECT szrtime_styp_list FROM szrtime WHERE szrtime_code = ''' || :SZVTIME_BLOCK.SZVTIME_CODE || '''))';
     Go_Block('SZVTIME_STYP_BLOCK' );
     Clear_Block ;
     message('select_stmt = '||select_stmt);
Set_Block_Property( 'SZVTIME_STYP_BLOCK', QUERY_DATA_SOURCE_NAME, select_stmt ) ;
Execute_Query ;
Go_Block('SZVTIME_BLOCK') ;
Else
Go_Block('SZVTIME_STYP_BLOCK' );
Clear_Block ;
Go_Block('SZVTIME_BLOCK') ;
End if ;
End ;
The result is the frm-41380 error.
I have tried change the query data source type on the nested table block to Table or From-clause but did not help. The select statement that is valid and returns the correct result in Toad.
Any suggestions on what to look for? Thank you.
Todd

> But what is giving me pause is that the user will be updating, deleting, and inserting
into this table and, of course, the nested table column.
It would give me pause, too. I've never used nested tables, so I poked around in Forms on-line help. In Forms 6i, it specifically states that Forms does not support the Nested Table structure.
In Forms 10g help, it describes Nested Table structures, but says NOTHING about how a form would handle it. And that implies to me that it is still not supported. So good luck.
In addition to creating the view, you may need to provide your own nested table updating procedures via a package on the server which your form can call. I know Forms supports passing pl/sql tables ("indexed by binary_integer"), so you could pass your nested table back and forth between the package and the form in that format.

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 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.

How to use 'query data source Name ' property in a block

I want to create a block using query and want to show the columns on a form.
Could you please tell me how can I do this?
Regards

Hi!
Create a new block manually.
Set the Query Data Source Type Property to FROM clause query.
In the Query Data Source Name Property write your query like you would
write it in sql*plus or toad but without a order by clause.
Set the DML Data Target Type Property to None.
Create items for the columns in your query.
May set the where clause and order by property of the block.
Build the form and execute a query in your new block.
Regards

About Query Data Source Columns property

Hello everyone,
I'm new to Oracle Forms version 10.1.0.2.
When I create a data block based on a table using Data Block Wizard, the block's Query Data Source Columns property is automatically populated with column definition entries corresponding to the columns of the base table.
I tried making changes to these entries, for example by changing the data types to wrong data types or even deleting them, and I found that those changes had no effect on the block at all. The form was still working as I wanted.
Please explain what is exactly the role of the block's Query Data Source Columns property.
Thank you very much.
p.s: The F1 key help says "The Query Data Source Columns property is valid only when the Query Data Source Type property is set to Table, Sub-query, or Procedure". So, please explain in each context of Query Data Source Type.

p.s: The F1 key help says "The Query Data Source Columns property is valid only when the Query Data Source Type property is set to Table, Sub-query, or Procedure". So, please explain in each context of Query Data Source Type.
IMHO those properties are very self-explaining: It is the data source of the block, or in other terms: how it is populated.
Table means the data block is based on a table and subsequently will be populated by
select col1, col2, col3 from your_table
With sub-query the block will be populated with your subquery; forms will issue
select col1, col2, col3 from (
-- this is your subquery
select col1, col2, col3 from tab1, tab2 where [....]
With Procedure in short you'd have a stored procedure which returns a ref cursor and the block will be populated by the ref cursor.
As for your question about the name: this actually should matter; the default is NULL which means that there needs to be a column which has the exact name as the item so in the above sample with table the item associated with your_table.col1 should be named col1. If it isn't the property should be named like the column. If this property also doesn't reflect the name this shouldn't work IMO.
cheers

FROM Clause query data source type

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