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Global Temporary Table


Global Temporary Table

By : Graham Stone
Date : November 17 2020, 04:28 AM
I wish this help you Oracle Temp tables are NOT like SQL Server #temp tables. I can't see any reason to continuously drop/create the tables. The data is gone on a per session basis anyways once the transaction or session is completed (depends on table creation options). If you have multiple threads using the same db session, they will see each other's data. If you have one session per thread, then the data is limited in scope as you mentioned. See example here.
code :


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Using table variable / global temporary table to code this PL/SQL function

Using table variable / global temporary table to code this PL/SQL function


By : user2685685
Date : March 29 2020, 07:55 AM
To fix this issue View is good answer(thanks to Gary), but there is another possibility.
You can create object type in database schema and table type referenced it:
code :
create or replace type TFooDataRecord as object (
   quantity number,
   amount number
);

create or replace type TFooDataList as table of TFooDataRecord;
create or replace function GetFoo(pAncestor in number) return TFooDataList
as 
  vResult TFooDataList;
begin

  select TFooDataRecord(quantity, amount)
  bulk collect into vResult
  from TBRawData, (select ... where ancestor = pAncestor) temp, 
  where TBRAWData.StoreID = temp.StoreID;

  return vResult;

end;
select foo_func.amount 
from 
  table( GetFoo(123) ) foo_func,
  some_another_table   foo2
where 
  foo_func.quantity < foo2.quantity 
Why if I select `Open Table` for temporary global table doesn't work in SQL Server 2005?

Why if I select `Open Table` for temporary global table doesn't work in SQL Server 2005?


By : Siri
Date : March 29 2020, 07:55 AM
Hope that helps There is no fix for this issue, other than:
(a) using a permanent table instead of a global ##temp table. What does the global ##temp table buy you over a permanent table? They both kill concurrency just as effectively.
DECLARE GLOBAL TEMPORARY TABLE Vs CREATE GLOBAL TEMPORARY TABLE in DB2

DECLARE GLOBAL TEMPORARY TABLE Vs CREATE GLOBAL TEMPORARY TABLE in DB2


By : Yogendra Singh
Date : March 29 2020, 07:55 AM
To fix the issue you can do There is a good article from Craig S. Mullins that covers the major differences between the two. For most purposes, they work the same.
Created Temp Tables are created in DSNDB07, which is the working file database (the same storage area used during SQL statements that need working storage). Declared Temp Tables are stored in temporary tablespace that you have to create.
Alter table on global temporary table (preserve to delete)

Alter table on global temporary table (preserve to delete)


By : Farhan Tanvir
Date : March 29 2020, 07:55 AM
I think the issue was by ths following , It is not possible. The valid syntax is documented, and doesn't include the ability to change this. Not being able to change this isn't listed explicitly as one of the restrictions for GTTs, but that only refers to things that are allowed for other types of table.
You'll have to drop and recreate the table with the new on commit clause.
When and Why to use global temporary table over local temporary table in SQL Server

When and Why to use global temporary table over local temporary table in SQL Server


By : vvvv
Date : March 29 2020, 07:55 AM
hope this fix your issue Personally, I don't see a need for global temporary tables. My inclination is to store such data in tables along with other tables. But, clearly, they do fill a need.
The answer to your first question is that global temporary tables are instance specific -- if by instance you mean a SQL Server instance. They are available to all users and all connections on the server. Global temporary tables start with the prefix ##. All references to such a table, say ##table, are to the same table (within a server instance).
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