Oracle running on Oracle Linux 6.4 12.1.0.2.0 database:
During his studies of FUSION with invisible columns, I discovered that invisible columns in the target table cannot be read. Workaround seems to be
MERGE INTO (SELECT <column list> FROM <target table>) AS <alias>
However, the documentation does not seem to allow this. Here are the details.
Test data
> CREATE TABLE t_target(
k1 NUMBER PRIMARY KEY,
c1 NUMBER,
i1 NUMBER invisible
)
table T_TARGET created.
> INSERT INTO t_target (k1,c1,i1)
SELECT 2, 2, 2 FROM dual
UNION ALL
SELECT 3, 3, 3 FROM dual
UNION ALL
SELECT 4, 4, 4 FROM dual
3 rows inserted.
> CREATE TABLE t_source(
k1 NUMBER PRIMARY KEY,
c1 NUMBER,
i1 NUMBER invisible
)
table T_SOURCE created.
> INSERT INTO t_source (k1,c1,i1)
SELECT 1, 1, 1 FROM dual
UNION ALL
SELECT 2, 2, 9999 FROM dual
UNION ALL
SELECT 3, 3, 3 FROM dual
3 rows inserted.
First try
Please note that I have a WHERE clause in the WHEN MATCHED clause. Its purpose is to avoid the update of a row when data are already correct. The WHERE clause is trying to read the invisible column of the target table.
> MERGE INTO t_target o
USING (
SELECT k1, c1, i1 FROM t_source
) n
ON (o.k1 = n.k1)
WHEN MATCHED THEN UPDATE SET
c1=n.c1, i1=n.i1
WHERE 1 IN (
decode(o.c1,n.c1,0,1),
decode(o.i1,n.i1,0,1)
)
WHEN NOT MATCHED THEN INSERT
(k1, c1, i1)
VALUES(n.k1, n.c1, n.i1)
...
Error at Command Line : 10 Column : 12
Error report -
SQL Error: ORA-00904: "O"."I1": invalid identifier
As you can see, I put a subquery after the USING clause so that 'n.i1' would be 'visible', but this is not enough since the 'I1' column in the target table is always invisible.
Second test
> MERGE INTO (
SELECT k1, c1, i1 FROM t_target
) o
USING (
SELECT k1, c1, i1 FROM t_source
) n
ON (o.k1 = n.k1)
WHEN MATCHED THEN UPDATE SET
c1=n.c1, i1=n.i1
WHERE 1 IN (
decode(o.c1,n.c1,0,1),
decode(o.i1,n.i1,0,1)
)
WHEN NOT MATCHED THEN INSERT
(k1, c1, i1)
VALUES(n.k1, n.c1, n.i1)
2 rows merged.
Here I used a subquery in the INTO clause thus, and it worked.
Unfortunately, this does not seem to be admitted in the documentation: IN fact refers to a table or a view as schema objects.
My question is:
How can I refer to invisible columns in the target table without creating a new object? My workaround using a subquery solution seems to work very well, but can I recommend if it is not documented?
Can I replace a "inline view" for a view and still be supported?
During his studies of FUSION with invisible columns, I discovered that invisible columns in the target table cannot be read. Workaround seems to be
However, the documentation does not seem to allow this. Here are the details.
Here I used a subquery in the INTO clause thus, and it worked.
Unfortunately, this does not seem to be admitted in the documentation: IN fact refers to a table or a view as schema objects.
My question is:
How can I refer to invisible columns in the target table without creating a new object? My workaround using a subquery solution seems to work very well, but can I recommend if it is not documented?
Can I replace a "inline view" for a view and still be supported?
But the documentation DO ALLOWS not only! You use a view - a view online and those that can be changed in a MERGE statement.
All versions of the doc for FUSION since 9i specifically say this:
INTO clause
Use the INTO target clause to specify the table or view you are updating or inserting into. To merge the data in a view, the view must be updated. Please refer to the "Notes on the editable views" for more information.
Here are the links for the doc. 9i, 10g, 11g and c 12, ALL OF THEM (the last three), except 9i have this EXACT clause above.
9i doc does not have this specific quote in the INTO clause section, but it doesn't have that quote a little later:
Limitation of the update of a view
You cannot specify DEFAULT when refreshing a view.
You cannot update a column referenced in the ONcondition clause.
merge_insert_clause
The merge_insert_clause specifies the values to insert into the column of the target table, if the condition of the ON clause is false. If the insert clause is executed, then all insert triggers defined on the target table are activated.
Restrictions on the merger in a view
You cannot specify DEFAULT when refreshing a view.
If your "workaround" isn't really a workaround solution. You SHOULD use an inline view if you need to reference a column "invisible" in the target table, since otherwise, these columns are INVISIBLE!
My workaround using a subquery solution seems to work very well, but can I recommend if it is not documented?
For an interface, I use the module knowledge - incremental update of the IKM Oracle.
He is running in insert / update of fashion.
In the target of the interface table, there is a the target field (column) that I want to give a value based on exploitation.
If the file is new and inserted into the target table - the field in the record should get the value "INSERT".
-Similarly, if an existing record in the target table is updated - the field of the record should get the value "UPDATE".
Any ideas on how you can do it?
Thank you.
You just need to customize your KM. Its can be done in many ways. Here is one approach. Change the existing lines of your update. Then change as below. But make you your own customization without hard coding. Here is codes, the fraction of the total code used in the KM steps.
I have a map where I fill in a column of my target table using a database sequence. Now my mapping is supposed to load the target gradually table. So I need a revenge for update and incremental insert. Now with this differential IKM it compares all the columns to match all colmuns line to understand, it should be an insert or update. Now, the following code shows that when the ROW_WID is loaded with a sequence of database.
If NOT EXISTS
(select 1 from W_LOV_D T
where T.ROW_WID = S.ROW_WID
and ((T.CREATED_BY = S.CREATED_BY) or (T.CREATED_BY IS NULL and S.CREATED_BY IS NULL)) and
Please suggest if there is no other IKM I should use or if there is another way around it without changing the code IKM...
Hi Marc,
Thanks for your reply.
I had solved it. The incremental update process inserts all rows from the source table to I$ table that exists in the target table. It does so by the where sql such as mentioned in my questions as
WHERE THERE is NOT ( . COLUMNS = . COLUMNS)
Now in the incremental update IKM Oracle to retrieve all the columns it uses the substitution with parameter as TABLE TARGET. Due to this column sequence will in the comparison and the request fails. When I used the IKM SQL incremental update it used INTEGRATION TABLE as parameter table to pick up the columns, as I'd mentioned in the target sequence is run, so it does not get the sequence column.
Simple answer: to solve this, use incremental update of the SQL IKM.
Thanks for posting the DOF and the sample code but whenever you post provide your Oracle version 4-digit (result of SELECT * FROM V$ VERSION). > How to assign values to the nested table and passes as a parameter for the procedure? > Well you do almost everything bad that could be hurt.
Here is the code that works to insert data into your table (the procedure is not even necessary).
See example 5-15 making reference to an element of nested Table Chapter 5 using PL/SQL collections and records in the PL/SQL doc http://docs.Oracle.com/CD/B28359_01/AppDev.111/b28370/Collections.htm#CJABEBEA
1. you don't even have the procedure because it is a simple INSERTION in the table you can do directly (see my above code)
inval1(1).val1 := 'testx1';
Since you have not yet created all the elements, there is no element 1 "inval1". You need EXTEND the collection to add an element
inval1.extend();
And then, there is an empty element, but "inval1" is a container for objects of type 'test_object1' not for scalars as "val1", "val2", and "val3". If you can not do
Can someone tell me how to extract the date max of the target table.
Thank you.
Azhar
Sorry why again once you are not able to use the aggregator operator to get a max value. You don't need a group of when taking a max value what from a table, unless otherwise specified
Try it with a simple table b table card
table (several itemno)
table b (number maxitem)
Use aggregator and don't put anything in the section of owb agg transformation group. Generate the code and take a look
I had a similar probem and error when you use the drop-down list instead of a checkbox. It was solved by putting the SELECT name = "CarMake in the menu dropdown.
But in the box, I don't know? I seem that the problem is the action page has the Form.carmake, but the page does not work. What Miss me and where should I put in the entry below page.
The main objective is to have checked checkboxes to insert some values into the database field carmake based on what is checked.
If the Honda checkbox is checked then It inserts into the carmake field value Honda.
If the Toyota checkbox is checked then It inserts into the carmake field the value of Toyota.
If both are true then 2 rows are inserted two values Honda and Toyota.
Ditto for the last option.
Thanks for your help
Here's the error again
error: Error occurred while processing request CARMAKE element is not defined in the FORM.
12:21:50.050 - term Exception - in C:\CFusionMX7\wwwroot\Author\CarAddAction.cfm: line 16 CARMAKE element is not defined in the FORM.
line 16 is: "#Trim (Form.carmake), # Join the Code
<! - Here is the form - > < html > < head > < / head >
< body >
< h1 > < / h1 >
< table > < action = "CarAddAction.cfm cfform" method = "POST" > " < b > < td > Honda: < table > < td > < Center > < input type = "checkbox" name = "HONDA_MODEL" value = "HONDA" checked > < / center > < table > < /tr > < b > < td > Toyota: < table > < td > < Center > < input type = "checkbox" name = "Toyota_MODEL" value = "Toyota" Unchecked > < / center > < table > < /tr > < b > < td > SUBARU: < table > < td > < Center > < input type = "checkbox" name = "SUBARU_MODEL" value = "SUBARU" unchecked > < / center > < table > < /tr >
< Tr > < td > < table > Honda model < td > < input type = "Text". name = "Honda_Model". Value ="" size = "22". MaxLength = "20" > < table > < tr > < /tr > < Tr > < td > < table > Toyota model < td > < input type = "Text". name = "Toyota_Model". Value ="" size = "22" > < table > < tr > < /tr > < Tr > < td > < table > Subaru model < td > < input type = "Text". name = "Subaru_Model". Value ="" size = "22" > < table > < tr > < /tr > < td > < table > < td > < input type is 'submit' value is "Take Add to database" > < table > < /tr >
< / cfform > < /table >
< / body > < / html >
<!-action page ---------> < cfdump var = "#form #" > < name cfquery = "InsertCarInfo." DataSource = "#request. MainDSN #">" INSERT INTO Car_tab) car_Make, Honda_Model, Toyota_Model, Subaru_Model
You check in one or more of the boxes before continuing? Remember what I said about the form field box existing only on the page of treatment at least 1 or more checkboxes are checked on your form. Make sure you use to avoid this problem.
What happens when you take a look at the output of your dump of form? Your fields are present?
I developed a scenario in an interface, where I planned keeping the option Truncate as false, right there the data is been going to target without any problems, but when I changed the status of truncate to TRUE, the interface is been run, but the array is not get truncated, rather the data's been loading again to target. (when running manually, the target table is been truncated perfectly) but not in programming.
Can someone help me in this problem.
Thank you
Shakur.
Have you regenerate the scenario in question since you changed the option Truncate. If you have not the regular job must still run the old code
I created an object type and able to fill the values in it, now I want to create a nested table type of this object and fill it but looks like I'm doing something wrong, see my code below.
Code example
CREATE or REPLACE TYPE countries_o AS OBJECT ( COUNTRY_ID TANK (2 BYTES), COUNTRY_NAME VARCHAR2 (40 BYTE), REGION_ID NUMBER); /
create or replace type countries_t is table of the countries_o;
DBMS_OUTPUT. Put_line (v_print (1).) COUNTRY_ID | v_print (1). COUNTRY_NAME | v_print (1). REGION_ID); -you're accessinf the first element of the nested table, which in turn points to the object.
END;
In the sections of the declaration you have assigned values to the nested table.
Hi all I HAV done an interface for a simple source data transfer to the target. When I run it, the records are stored in the target table. Now, I want to launch the interface (for the same or different source table) and add the records to existing records in the target table.
Kindly guide me, explaining how shud I do the addition in the target table.
Thanks in advance.
Hello
You can use the IKM control add... it will add records...
OWb, I try to update the target table with the game and the update on the same ground is this possible. I'm a match merge error indicating that you cannot update and match on the same ground. But in SQl is my selection
Update table define RFID = 0 where RFID = 1 and ID_processus = 'TEST '.
Can HWO I do this in OWB.
I have check but in the case later (last one) that he warns no error if you can go with it. and I tested it it works
You can check the first case (from where we start) if it has been warned and then try to run.
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