Alternative way to create temporary table with better performace?

Hi guys,
Do you happen to a better alternative way for creating a global temporary table with better performance?
I am creating a table and then using it in a big query but is taking a lot of time.
Thanks for any help you can provide.

I am not very familiar with explains plans, but I believe it is ok.
The first query I had was repeating part of it in every subquery that is why I decided to create the temporary table. I have also tried using the WITH but it seems to take the same amount of time. I also thought of creating indexed but was told that it would work in this case.
I have another discussion named "SQL Query Having performance issues" in this discussion I have included the query just in case you want to look at it.
Thanks

Similar Messages

Is there a way to create "temporary" tables in SAP database?

Hello,
Is there a way to create temporary tables in ABAP?
Here is our scenario:
1. Invoke a custom RFC that creates a temporary table and returns the name of the table.
2. Invoke another custom RFC and pass this table name as parameter. This RFC internally does some INNER JOIN with the temporary table.
3. Invoke the third RFC to delete the temporary table.
Note that the name of the table cannot be static. We have many users using our application simultaneously and connecting to the SAP server.
I would appreciate it if you could point me in the right direction.
Thank you in advance for your help.
Peter

I just ran into a similar issue. While only calling the select statement 2 times, each time had so many entries in the 'for all entries' list, that the compiler converted this into about 700 calls to the select. Now since the select joined three real tables on the database, the trace shows this one select as being the slowest item in this application.
I think that happened because 'for all entries' gets converted to an 'IN' clause, and then the total number of characters in any SQL statement has an upper limit. So the compiler must make the select statement over and over until it covers all entries in the 'for all entries' list. Is that correct?
Since every database I ever saw has the concept of db temporary tables, I have used db temp tables many times for this sort of thing.
The ABAP compiler could determine that more than one IN statement will be need, then use an alternate: write all the FOR ALL ENTRIES to a db temp table, then join on the db temp table, then drop db temp table. Since the compiler does this sort of thing, no application code needs change to get the speed boost.

Creating temporary tables with JSTL

I need to create temporary tables in my DB (MySQL), and later call it in a query.
I try this:
<sql:update var="temp1" dataSource="${conn}">
CREATE TEMPORARY TABLE temp1
SELECT data1 FROM table1 WHERE condition = 1
</sql:update>
<sql:query var="query1" dataSource="${conn}">
SELECT * FROM temp1
</sql:query>

I haven't done enough with MySQL recently to know.
Break your problem up into two parts.
First there's the query portion. Create a permanent table and make sure that your query works fine with taht.
Next is the creation of the temporary table. Once you KNOW the query is working, then you can concentrate on that.
I'll assume that you've already GRANTed table creation permission to the user that your JSP app uses to log into the database.
Are there any messages written to the servlet/JSP engine log file that might help you figure out what's wrong? Do you have a JSP error page that's displayed if any exceptions are thrown? - MOD

How to Create a Table with Merge and partitions in HANA

Hi,
What is the best way to create a Table with MERGE and PARTITION and UNLOAD PRIORITIES.
Any body can you please give me some examples.
Regards,
Deva

Ok,
1) the UNLOAD PRIORITY has nothing to do with the order of data loads in your ETL process
2) Unloading of columns will happen automatically. Don't specify anything specific for the tables, then SAP HANA will take care about it
3) Not sure where you get your ideas from, but there is no need to manually "flush" tables or anything like that. SAP HANA will take care of memory housekeeping.
4) Partitioning and how to specify it for tables has been largely documented. Just read up on it.
5) Delta Merge will happen automatically, as long as you don't prevent it (e.g. by trying to outsmart the mergedog rules)
Seriously, I get the impressions that this list of requirements is based on some hear-say and lack of actual information and experience with SAP HANA. There are a couple of extensive discussions on data loading optimization available here in SCN and on SAPHANA.COM. Please read those first.
All this had been discussed broadly a couple of times.
- Lars

Can I create a table with more than 40 columns ?

Hello,
I need to organize my work with a table and need about 66 columns. I am not very good with Numbers but I know a little bit of Pages. I cannot find a way to create a table with more than 40 columns... Is it hopeless ? (Pages '08 v. 3.0.3)
Thank you all

It's never too late to try to teach users that the Search feature is not only for helpers.
The number of columns allowed in Numbers is not a relevant value when the question is about Pages '08 tables.
I tried to copy a 256 columns Numbers table into a Pages '09 document.
I didn't got a table but values separated by TABs.
I tried to convert this text range in a table and got this clear message :
If I remember well, in Pages '08, the limit is 40 columns.
It seems that you are a specialist of inaccurate responses, but I'm not a moderator so I'm not allowed to urtge you to double check what you wrote before posting.
Yvan KOENIG (VALLAURIS, France) vendredi 29 avril 2011 14:57:58
Please :
Search for questions similar to your own before submitting them to the community

How to Create a Temporary Table with SQL Server

I know you can create a temporary table in SQL Server 2000, but not quite sure how to do it in CFMX 7, i.e., does the SQL go inside a <CFQUERY dbtype="query"> tag?
I'm pulling the main set of records from an Oracle server (1st data source), but it does not contain employee names, only employee IDs. Since I need to show the employee name along with the Emp ID, I'm then pulling a list of "current" employee names from a SQL Server (2nd data source), which is the main database on our CF server.
I've got a QofQ that works fine, except it only matches EmpIDs that exist in both result sets. Employees who are no longer employed, don't match, and don't display. Since I can't do a LEFT OUTER JOIN with a QofQ, what I need to do is get the records from the Oracle server into the SQL Server. Preferably in a temporary table.
I was hoping if I could get those Oracle records written to a temp table on the main SQL Server, in same database as the Employee Name table, I could then write a normal <CFQUERY> that uses a LEFT OUTER JOIN.
I think I could probably write a Stored Procedure that would execute the SQL to create the temporary table, but am trying to avoid having to write the SP, and do it the simplest way.
This query will be a program that can be run hundreds of times per day, with a form that allows users to select date ranges, locations, and other options. That starts the queries, which creates the report. So I just need the temp table to exist only until all the SQL has run, and the <CFOUTPUT> has generated a report.
If the premise is right, I just need some help with the syntax for creating a SQL Server temp table, when you want to write records to it from an external data source. I'm trying the following, but getting an error:
<CFQUERY name="ITE_Temp" datasource="SkynetSQL">
CREATE TABLE #MyTemp
(   INSERT INTO #MyTemp
ITE2.TrueFile char (7) NOT NULL,
ITE2.CountOfEmployee int NULL,
ITE2.DTL_SUBTOT decimal NULL,
ITE2.EMPTYPE char (3) NULL,
ITE2.ARPT_CD char (3) NULL
</CFQUERY>
So I actually created a permanent table on the SQL Server, and wrote the below SQL, which does work, and does write the records to table. I can then write another CFQUERY with a LEFT OUTER JOIN, and get all the records, including those that don't have matching employee name:
<CFQUERY datasource="SkynetSQL">
<CFLOOP index="i" from="1" to = "#ITE2.RecordCount#">
INSERT INTO ITE_Temp
   (FullFile,
   EmployeeCount,
   DTL_Amount,
   EmployeeType,
   station)
VALUES ('#ITE2.TrueFile[i]#',
   #ITE2.CountOfEmployee[i]#,
   #ITE2.DTL_SUBTOT[i]#,
   '#ITE2.EMPTYPE[i]#',
   '#ITE2.ARPT_CD[i]#')
</CFLOOP>
</CFQUERY>
But, I hate to have to create a table and physically write to it. For one, it seems slower, and doing it in temp would be in memory, and probably much faster, correct? Is there some way to code the above, so that it does something similar, but in a TEMPORARY TABLE?   If I can figure out how to do this, I can pull data from multiple data sources and servers, and using SQL Server temp tables, work with the data as if it was all on the same SQL Server, and do some cool reports.
Everything I've done for the past few years, has all been from data from a single source, whether SQL Server, or another server. Now I need to start writing reports where data can come from 3 or 4 different servers, and be able to do joins (inner and outer). Thanks for any advice/help. Much appreciated.
Gary

While waiting to hear back, I was able to write the query results from an outside Oracle server, to a table on the local SQL Server, and do the LEFT OUTER JOIN required for the final query and report to work. That was with this syntax:
<CFQUERY name="AddTableRecords" datasource="MyTable">
TRUNCATE TABLE ITE_Temp
<CFOUTPUT query="ITE2">
INSERT INTO ITE_Temp
(FullFile,EmployeeCount,DTL_Amount,EmployeeType,station)
VALUES
('#TrueFile#', #CountOfEmployee#, #DTL_SUBTOT#, '#EMPTYPE#', '#ARPT_CD#')
</CFOUTPUT>
</CFQUERY>
However, I was not able to write to a temporary table AND read the results. I got the syntax to run to write the above results to a temporary table. But when I tried to read and output the results from the temp table, I got an error. Also, it wouldn't take the single "#" (local) only the global "##" table var, using this syntax. Note that if I didn't have the DROP TABLE in the beginning, the 2nd time you run this query, you get an error telling you the table already exists.
<CFQUERY name="ITE_Temp2" datasource="MyTable">
DROP TABLE ##MyTemp2
CREATE TABLE ##MyTemp2
FullFile char (7) NOT NULL,
EmployeeCount int NULL,
DTL_Amount decimal NULL,
EmployeeType char (3) NULL,
station char (3) NULL
<CFOUTPUT query="ITE2">
INSERT INTO ##MyTemp2 VALUES
'#ITE2.TrueFile#',
#ITE2.CountOfEmployee#,
#ITE2.DTL_SUBTOT#,
'#ITE2.EMPTYPE#',
'#ITE2.ARPT_CD#'
</CFOUTPUT>
</CFQUERY>
So even though the above works, I could use some help in reading/writing the output. I've tried several things similar to below, but they don't work. It't telling me ITE_Temp2 does not exist. It's not easy to find good examples of creating temporary tables in SQL Server.
<CFQUERY name="QueryTest2" datasource="SkynetSQL">
SELECT *
FROM ITE_Temp2
</CFQUERY>
<CFOUTPUT query="ITE_Temp2">
Output from Temp Table<br>
<p>FullFile: #FullFile#, EmployeeCount: #EmployeeCount#</p>
</CFOUTPUT>
Thanks for any help/advice.
Gary.

How to create a table with events in smartforms?

How to create a table with events view in smartforms?
It doesn't like general table with header, main area and footer.
for example:
in smartforms: LE_SHP_DELNOTE
table name is TABLEITEM(Delivery items table)

Vel wrote:
I am creating XML file using DBMS_XMLGEN package. This XML file will contain data from two different database tables. So I am creating temporary table in the PL/SQL procedure to have the data from these different tables in a single temporary table.
Please find the below Dynamic SQL statements that i'm using for create the temp table and inserting the data into it.
Before insert the V_NAME filed, i will be appending a VARCHAR field to the original data.
EXECUTE IMMEDIATE 'CREATE TABLE TEMP_TABLE (UNIQUE_KEY NUMBER , FILE_NAME VARCHAR2(1000), LAST_DATE DATE)';
EXECUTE IMMEDIATE 'INSERT INTO TEMP_TABLE values (SEQUENCE.nextval,:1,:2)' USING V_NAME,vLastDate;What exactly i need is to eliminate the INSERT portion of it,Since i have to insert more 90,000 rows into it. Is there way to have the temp table created with data in it along with the sequence value as well.
I'm using Oracle 10.2.0.4 version.
Edited by: 903948 on Dec 22, 2011 10:58 PMWhat you need to do to eliminate the INSERT statement is to -- as already suggested by others - eliminate the temporary table. You don't need it. It is just necessary overhead. Please explain why you (apparently) believe that the suggestion of a view will not meet your requirements.

How to create a table with data in it?

I need to have a temp table in a PL/SQL procedure for processing which can hold data values from two other tables and a sequence number.
Ex:
Existing tables:
table1 (col1 varchar2(100), col2 date, col3 number20) - Has more 1Lakh rows
table2 (col1 varchar2(100), col2 date) - Has more 900 rows
New table
temp_table (col1 PRY KEY(seq1.number), col2 varchar2(100), col3 date)
Currently i have created the temp_table and inserting all the data from both table1 & table2 (which is poor). Please suggest me a way to have the temp_table created with data(atleast from table1 which has more than 1Lakh rows). Please see i need a sequence number as well.
Thanks in advance.

Vel wrote:
I am creating XML file using DBMS_XMLGEN package. This XML file will contain data from two different database tables. So I am creating temporary table in the PL/SQL procedure to have the data from these different tables in a single temporary table.
Please find the below Dynamic SQL statements that i'm using for create the temp table and inserting the data into it.
Before insert the V_NAME filed, i will be appending a VARCHAR field to the original data.
EXECUTE IMMEDIATE 'CREATE TABLE TEMP_TABLE (UNIQUE_KEY NUMBER , FILE_NAME VARCHAR2(1000), LAST_DATE DATE)';
EXECUTE IMMEDIATE 'INSERT INTO TEMP_TABLE values (SEQUENCE.nextval,:1,:2)' USING V_NAME,vLastDate;What exactly i need is to eliminate the INSERT portion of it,Since i have to insert more 90,000 rows into it. Is there way to have the temp table created with data in it along with the sequence value as well.
I'm using Oracle 10.2.0.4 version.
Edited by: 903948 on Dec 22, 2011 10:58 PMWhat you need to do to eliminate the INSERT statement is to -- as already suggested by others - eliminate the temporary table. You don't need it. It is just necessary overhead. Please explain why you (apparently) believe that the suggestion of a view will not meet your requirements.

Create Temporary Tables

Hi, there.
Can anybody tell me what's the syntax for the SQL statements to create temporary tables?
I'm developing a shopping cart, and at the end of every purchase (checkout) I want to organize the items of the Session Bean Hash Table that contains them, and group them by category, brand, price and show the serial number of each item. I was thinking to do SQL-style operations like GROUP BY on the Hash Table itself, but I am having a hard time with it, so that's why I thought that filling a temporary database table with the Hash Table data could be the solution to the problem of grouping and ordering the items contained in the Shopping cart Bean.
I saw the following code in this same forum:
stmt = con.createStatement();
stmt.executeUpdate("create table temp (slno integer, first_name varchar(32), middle_name varchar(1), last_name varchar(32))");
But I don't understand how the temporary table has a fixed name, isn't that going to create conflict with another user that creates a temporary table with the same name but in a different session?
I hope my approach makes sense. If so, what's the SQL syntax to create temporary-session-like tables so I can include it in my JDBC code?
Thank you in advance for any information or alternative suggestion.

But I don't understand how the temporary table has a
fixed name, isn't that going to create conflict with
another user that creates a temporary table with the
same name but in a different session?Yes, it is. That's one reason why people try to avoid creating temporary tables, I suppose. There are other reasons.
I hope my approach makes sense. If so, what's the SQL
syntax to create temporary-session-like tables so I
can include it in my JDBC code?You already know the syntax for creating a table. Your only problem is finding a unique name for the table, one that no other user will use. You could have a one-row one-column table with a number in it, which you read and increment, then use that number for your table name, for example. Unless your database happens to have this as a feature -- you would have to read its documentation to find that out.
However as I implied before, you should try to avoid creating temporary tables. Creating a table is a time-consuming operation, and if your program ends abnormally without dropping the temporary table, your database slowly fills up with useless tables.

Best way to update a table with disinct values

Hi, i would really appreciate some advise:
I need to reguarly perform a task where i update 1 table with all the new data that has been entered from another table. I cant perform a complete insert as this will create duplicate data every time it runs so the only way i can think of is using cursors as per the script below:
CREATE OR REPLACE PROCEDURE update_new_mem IS
tmpVar NUMBER;
CURSOR c_mem IS
SELECT member_name,member_id
FROM gym.members;
crec c_mem%ROWTYPE;
BEGIN
OPEN c_mem;
LOOP
FETCH c_mem INTO crec;
EXIT WHEN c_mem%NOTFOUND;
BEGIN
UPDATE gym.lifts
SET name = crec.member_name
WHERE member_id = crec.member_id;
EXCEPTION
WHEN NO_DATA_FOUND THEN NULL;
END;
IF SQL%NOTFOUND THEN
BEGIN
INSERT INTO gym.lifts
(name,member_id)
VALUES (crec.member_name,crec.member_id);
END;
END IF;
END LOOP;
CLOSE c_mem;
END update_new_mem;
This method works but is there an easier (faster) way to update another table with new data only?
Many thanks

>
This method works but is there an easier (faster) way to update another table with new data only?
>
Almost anything would be better than that slow-by-slow loop processing.
You don't need a procedure you should just use MERGE for that. See the examples in the MERGE section of the SQL Language doc
http://docs.oracle.com/cd/B28359_01/server.111/b28286/statements_9016.htm
MERGE INTO bonuses D
   USING (SELECT employee_id, salary, department_id FROM employees
   WHERE department_id = 80) S
   ON (D.employee_id = S.employee_id)
   WHEN MATCHED THEN UPDATE SET D.bonus = D.bonus + S.salary*.01
     DELETE WHERE (S.salary > 8000)
   WHEN NOT MATCHED THEN INSERT (D.employee_id, D.bonus)
     VALUES (S.employee_id, S.salary*.01)
     WHERE (S.salary <= 8000);

Cannot create temporary table having identity column

Hi experts,
I saw the above error msg while running the following statement:
     create local temporary column table #tmp_table (c1 int GENERATED by default AS IDENTITY (start with 1 increment by 1), c2 int)
     Could not execute 'create local temporary column table #tmp_table(c1 int GENERATED by default AS IDENTITY (start with ...'
     SAP DBTech JDBC: [7]: feature not supported: cannot create temporary table having identity column: C1: line 1 col 48 (at pos 47)
I understand we can support normal column table creation with identity column, but don't know why cannot support temporary column tables with identity column. Is there any configuration that can enable it for temporary column table? Or what can I do to support it indirectly, like writing a trigger to support it or something else?
If not, then is there any future plan for this feature?
Regards,
Hubery

Hi Hubery,
I've heard this trail of arguments before...
Customer has a solution... they want it on HANA... but they don't want to change the solution.
Well, fair call, I'd say.
The problem here is: there's a mix-up of solution and implementation here.
It should be clear now, that changing DBMS systems (in any direction) will require some effort in changing the implementation. Every DBMS works a bit different than the others, given "standard" SQL or not.
So I don't agree with the notion of "we cannot change the implementation".
In fact, you will have to change the implementation anyhow.
Rather than imitating the existing solution implementation on ASE, implement it on SAP HANA.
Filling up tons of temporary tables is not a great idea in SAP HANA - you would rather try to create calculation views that present the data ad hoc in the desired way.
That's my 2 cts on that.
- Lars

Create temporary Tables using SQL

Hello,
I'm wondering if SAP allows the creation of new Tables without SDK objects,
I want to create temporary tables using SQL scripts an compile them when an specific addon is connected and erase them when the addon disconnects,
Do you think this is allowed?.
thanks,
Gabriela

You could always have a second DB to create your temp tables in. This is the way I've done this, as well as created my own views and stored procedures in it. No updating of the primary table necessary. The way I named things was:
Company_DB - Company Database
Company_DB-Extern - My own stuff
Then, in sap, you can just do [Company_DB-Extern]..Object to call it, or you do the same from withing your project.

How create temporary table from list of values

Can you anybody advise me how can I create temporary table from list of values? I have list of values and need create temporary table for next use with command JOIN etc.
Thank you for help

NO, you can not create temporary table in oracle on the fly ( Like #Tabels in SQl Server or Sybase ) , you will have to use the GTT i.e Global Temporary Tables
check the following link GTT :
to flush the tables after commit
CREATE GLOBAL TEMPORARY TABLE my_temp_table (
column1 NUMBER,
column2 NUMBER
) ON COMMIT DELETE ROWS;In contrast, the ON COMMIT PRESERVE ROWS clause indicates that rows should be preserved until the end of the session.
so to keep rows in Table after commit
CREATE GLOBAL TEMPORARY TABLE my_temp_table (
column1 NUMBER,
column2 NUMBER
) ON COMMIT PRESERVE ROWS;

Is there a way to create a table of contents listing the order of tabs(sheets) in a Numbers document?

I am planning my wedding and I have this huge Numbers document with 20+ tabs and I have plans to add many more tabs. Is there a way to create a table that has two columns: column 1= order that a tab appears, column 2=tab name? For example, my first three tabs are called Venues, Must Haves, and To Do List (in this order. I'd want this table of contents to be in the first sheet of the document, so it would be like sheet 1. Then I 'd want like the cells of column 1 to be like 2, 3, 4 (2nd, 3rd, 4th sheet in the document), and then the cells of column 2 to say Venues, Must Haves, and To Do List. I can make a tiny table of one cell in each sheet that I copied the name of the sheet and then do like a cell reference for column 2, but I'm having trouble w column 1.

There is no referential value for the order of the sheets, just the sheet name. Only two things I can think of to suggest:
Do the same thing for the first column that you do with the second (i.e. put a referential column in the same table as the Name and point to that).
Seriously consider using a word processor program. Numbers is probably the wrong tool.

How to create a table with auto number?

I want to create a table with a column default to increasing integer. The first thought came up to me is to use sequence. I find in google the following create statement create table etl_stats1 (run_time date,arr_rows int,lid int default nextval('etl_req'));get ORA-04044: procedure, function, package, or type is not allowed here.
There are threads metioned using trigger to do the job. But does what not support default to a sequence, it appears such a nature way.

You need to create a sequence and a trigger:
SQL> create table etl_stats1 (run_time date,arr_rows int,lid int)
2 /
Table created.
SQL> create sequence etl_seq;
Sequence created.
SQL> create or replace
2    trigger etl_stats1_bir
3    before insert
4    on etl_stats1
5    for each row
6    begin
7        select etl_seq.nextval into :new.lid from dual;
8 end;
9 /
Trigger created.
SQL> insert into etl_stats1 (run_time,arr_rows) values(sysdate,99)
2 /
1 row created.
SQL> select * from etl_stats1
2 /
RUN_TIME   ARR_ROWS        LID
15:38:41         99          1
SQL> SY.

Alternative way to create temporary table with better performace?

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