I tried to create a view in powerapps table to perform bulk delete action on it. The view that defines outer join like,
I want to get the table Order values which should not be present in the Invoice table, but it should have a relation with the table Invoice (which means the record should be present in table Order but not in table Invoice).
For this, I had the option to create a view by applying the above condition was,
And the above condition is working fine and results were expected. But the problem is when i added the above condition for creating a particular view ( XYZ view) which is not listing on Bulk delete wizard for that entity( here the entity is order).
To overcome this issue what i can do?
Related
What is the cleanest solution in Big Query to create a view from multiple tables that share the same prefix and are located in the same dataset? I'd like to have the large table updated automatically every time a new {prefix}_'yyyy_mm_dd' table is added to the dataset.
Following the documentation:
The wildcard table functionality does not support views. If the wildcard table matches any view in the dataset, the query returns an error.
Is creating a new table (duplicating the data) the only option then?
A view can query several tables:
create view Test.one
as
Select *
from `Test.oneM*`
However, query several views is not allowed:
Select *
from `Test.one*`
Consider the following scenario:
Main Control Table: 100 rows (Denormalized table with multiple processing ID's).
Set of 10 Parent Tables populated based on Control table.
Set of 10 Child Tables populated based on the Parent tables.
For daily processing:
We need to delete the data from Child tables first.
Parent Tables next.
Control table last.
Then insert data into Control table using multiple Insert Statements as it is denormalized.
Is this possible in one mapping?
One suggestion is to use SQL Transform and just execute the SQL's one after the other.
Is there an alternative way of Handling this?
I have a DM Form type page, where I would like to show and update values from different tables. By default when I created page, I have been asked for data source, specified only one of the tables, which in fact created process in After Header of type Automated Row Fetch. Also in After Submit a process of type Automatic Row Processing (DML) is created. When I add an item in the page from different table, obviously I am getting an error that the column not found in that table. How can I add more tables into that page, so they will be fetched and updated properly?
There is a common column in all tables, to identify which record I would like to show from each table.
I would like to show and update values from different tables
[...]
There is a common column in all tables, to identify which record I would like to show from each table.
Maybe are you looking for a simple JOIN on your various tables?
Based on Oracle's HR example schema, if you need to display both departments and employees names, you write something like that as your report query:
SELECT department_name as dep_name,
first_name || ' ' || last_name as emp_name
FROM HR.DEPARTMENTS JOIN HR.EMPLOYEES
USING(DEPARTMENT_ID)
In order for this to be usable from APEX form builder, you have to wrap it in a VIEW:
CREATE VIEWS MY_VIEW AS SELECT .... FROM ... JOIN ...
I can't guarantee that the view will be update-able out-of-the-box as Oracle has very specific rules for inherently updatable views -- especially for join views. However, you might be able to make your view updatable anyway by using an INSTEAD OF trigger. If you decide to go that way, maybe worth considering asking an other question on that specific topic if needed.
I got two schema A and B. In A there is a table 'company' and in B there is a table 'newcompany'. Now I need all the data which is residing on A.company to be updated on B.newcompany whenever there is some data updation on A.company.
Please help me out with a query or some function which implements this functionality.
You could give grants to the user and simply access the table as B.newcompany inside an onupdate trigger for the A.company table.
I'm wondering if its possible to create a view that automatically checks if there is a new monthly created table and if there is include that one?
We have a new table created each month and each one ends with the number of the month, like
table for January: table_1
table for February: table_2
etc...
Is it possible to create a view that takes data from all those tables and also finds when there is a new one created?
No, a view's definition is static. You would have to replace the view each month with a new copy that included the new table; you could write a dynamic PL/SQL program to do this. Or you could create all the empty tables now and include them all in the view definition; if necessary you could postpone granting any INSERT access to the future tables until they become "live".
But really, this model is flawed - see Michael Pakhantsov's answer for a better alternative - or just have one simple table with a MONTH column.
Will be possible if you instead of creating new table each month will create new partition for existing table.
UPDATE:
If you have oracle SE without partitioning option you can create two tables: LiveTable and ArchiveTable. Then each month you need move rows from Live to ArchiveTable and clean live table. In this case you need create view just from two tables.
Another option is to create the tables in another schema with grants to the relevant user and create public synonyms to them.
As the monthly tables get created in the local schema, they'll "out-precedence" the public synonyms and the view will pick them up. It will still get invalidated and need recompiling, but the actual view text should need changing, which may be simpler from a code-control point of view.
You can write a procedure or function that looks at USER_TABLES or ALL_TABLES to determine if a table exists, generate dynamic sql, and return a ref cursor with the data. The same can be done with a pipelined function.