How can I write the trigger for the global temporary Table

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• trigger on the global temporary table

  Hello

  I have a global temporary table

  CREATE GLOBAL TEMPORARY table to register)

  no_registre NUMBER primary key,

  date of create_time

  ) ON COMMIT DELETE ROWS.

  I have to write a trigger on the table every time that the insertion is made.

  create or replace trigger tri_register

  before inserting the REGISTER

  for each line

  Start

  : new create_Date: = sysdate;

  end;

  /

  This trigger can work on this registry table?

  Thank you

  913578 wrote:

  Sorry Karthik.

  the thing is that I did not have privelleges to test, I send the code to some dba who makes deployment.

  Sorry to hear that!

  Please tell me... We can write triggers on GTT?

  of course, you can!

  SQL > create a global temporary table registry
  () 2
  no_registre 3 number primary key,
  create_time date 4
  5)
  6 on the validation to delete lines;

  Table created.

  SQL > create or replace trigger register_trig before insert in the register for each line
  2 start
  3: new.create_time: = sysdate;
  4 end;
  5.

  Trigger created.

  SQL > insert into values of registry (no_registre) (1);

  1 line of creation.

  SQL > select * from registry;

  NO_REGISTRE CREATE_TI
  ----------- ---------
  1 8 JULY 13

• active sessions for the global temporary table

  Hello
  
  Is there no view or the way to know how many active users evaluate a global temporary table?
  
  Rgds,
  Piyush

  The following query should list the user accounts writing (with INSERT/UPDATE/DELETE) into the temporary table 'TWG' belonged to "O":

  select s.username, l.sid
  from v$lock l, v$session s
  where l.id1 =
  (select object_id from dba_objects where owner='O' and object_name='GTT')
  and l.sid = s.sid;
  

  The following query should list all user accounts by using the temporary table named "GTT" with SELECT/INSERT/UPDATE/DELETE statement:

  select username
  from v$session s, v$access a
  where s.sid = a.sid
  and object ='GTT';
  

  Edited by: P. Forstmann on June 9, 2010 09:40

• order of the lines of the global temporary table

  I have a global temporary table "TMP_PAYMENT_ANNUITY" and I insert records in there with loop for each iteration of loop insert a row in the table.
  Now, I'm back records inserted user with cursor in this way:

     open o_annuity_payments for 
        select * from TMP_PAYMENT_ANNUITY;

  Can I be sure that the slider will have records in exactly the same order as inserted loop them?
  Or do I also insert rownumber column of my table that I filled with the loop iteration variable, and I'll be back slider like this:
  

     open o_annuity_payments for 
        select * from TMP_PAYMENT_ANNUITY
         order by ROWNUMBER;

  Currently, I have "ROWNUMBER"-column in the table, but maybe I should create then? ".
  The question is about the order of the rows, how this order will be without "in order to" - clause?
  
  Published by: CharlesRoos on June 2, 2010 03:03

  CharlesRoos wrote:
  >
  What makes the solution of the temporary table better?
  >

  1. This approach/solution is easier to read for other developers. Ugly hierarchical query with the function LAG is difficult to read and edit.

  I agree with you! It's one of the reasons when you should stop developing very sophisticated SQL statements. Even if the performance is slightly better.

  2-hierarchical-feature in sql is always slow and friendly error.

  I don't think that a hierarchical solution is necessary. but it may depend on your version of Oracle (think MODEL clause).

  3. it is easy to implement the "temporary table solution." with complex sql construction will be time-consuming and bug-friendly and complex.
  3. I'm not sure the question of perfomance, here I may be wrong, I test/compare.

  ...

  CharlesRoos wrote:
  1 can someone confirm that I don't need "ORDER byclause?

  I never would implement it WITHOUT a prescription by cluase. Why depend on such a solution?
  One of your strong points would improve maintainability. It is against this requirement.
  Imagine this happening, for example, when another developer decided to move from a temporary to a normal table. Maybe by adding a field 'user '.
  In such a scenario, you can find ways where the output is sorted not more properly.

  I can't find Google evidence.

  2. what happens if I order by as:

  select * from TMP_PAYMENT_ANNUITY
  ORDER BY ROWID;
  

  This approach maybe gives me the order of the rows as they are in the table?

  main problem is that you cannot test if it STILL works without order. But you will need to find not only one rare case that breaks it.

  * In a multiuser environment, the table could put a few lines where another session comes to delete certain lines. This could influence the agenda.
  * oracle could change something for the release of "like orders ' (I did they did already in the GROUP BY clause from 9i to 10g).

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• How can I write the SQL query for this requirement?

  Hello
  
  I have a table that looks like this:
  
  NAME | ANNUAL |     VALUE
  ==== | ====== | =====
  execno |     480.     000004
  step |      480.     0400
  SCNA |     480. cd_demo
  System |     480.     D47-010
  type |     480.     step
  free_text |     480.     stage 400
  rbare |     480.     RBA-1
  execno |     482. 000004
  SCNA |     482. cd_demo
  System |     482.     D47-010
  free_text |     482.     step 300
  step |          482.          0300
  type |      482.     step
  rbare |     482.     RBA-1
  execno |     483.     000001
  type |     483.     step
  rbare |     483.     rke1
  SCNA |     483.     rke10
  step |     483.     0240
  
  Now, say that I want to fetch ONLY annual with execno = '000004' and '400' = step and scna = "cd_demo" and system = "d47-010' and type = 'step', how to write SQL code?
  At first, it seemed like a simple writing query but I've been struggling with it for hours without success. I must admit though that I'm not strong in SQL :-)
  There, can anyone help? Please...
  
  Thanks in advance.
  
  Emmanuel
  
  Published by: user12138559 on October 30, 2009 03:05

  Hi, Emmanuel.

  Welcome to the forum!

  Here's a way to do what you asked:

  SELECT       doc_id
  FROM       table_x
  GROUP BY  doc_id
  HAVING       SUM (CASE WHEN name = 'execno' AND value = '000004'  THEN 1 END) > 0
  AND       SUM (CASE WHEN name = 'step'   AND value = '400'     THEN 1 END) > 0
  AND       SUM (CASE WHEN name = 'scna'   AND value = 'cd_demo' THEN 1 END) > 0
  AND       SUM (CASE WHEN name = 'system' AND value = 'd47-010' THEN 1 END) > 0
  AND       SUM (CASE WHEN name = 'type'   AND value = 'step'    THEN 1 END) > 0
  ;
  

  If you think that a WHERE clause would be used, but WHERE does apply to a single line. You need a condition that checks several rows in the same group.
  WHEN has an effect something like WHERE.

  Published by: Frank Kulash, October 30, 2009 06:26

  This solution assumes that (name, annual) is unique.

• How can I write the SQL for this result?

  Hello my dear,
  Here first of all the script.

  CREATE TABLE ACC_TEST(
  AD_ID NUMBER,
  AD_NAME VARCHAR2(50),
  AD_SPM_ID NUMBER);
  /

  the data are

  Insert into ACC_TEST (AD_ID,AD_NAME,AD_SPM_ID) values (136,'Saleh Ahmed',129);
  Insert into ACC_TEST (AD_ID,AD_NAME,AD_SPM_ID) values (142,'Hamidur Rahman',136);
  Insert into ACC_TEST (AD_ID,AD_NAME,AD_SPM_ID) values (124,'Jasim Uddin',null);
  INSERT INTO ACC_TEST (AD_ID,AD_NAME,AD_SPM_ID) VALUES (129,'Sazib',124);

  I need the following result, when passing a value of Ad_Id. For example I go to 142 then result must be

  Select Ad_Id,Ad_Name
  From..
  ...
  where ad_id=142
  
  Ad_Id   Ad_Name
  136     Saleh Ahmed
  129     Sazib
  124     Jasim Uddin
  
  If I Pass Ad_Id=136 Then Result Should Be
  Ad_Id   Ad_Name
  129     Sazib
  124     Jasim Uddin
  
  
  If I Pass Ad_Id=129 Then Result Should Be
  Ad_Id   Ad_Name
  124     Jasim Uddin 

  Database 10 G XE
  
  Any help will be useful

  Hello

  HamidHelal wrote:
  WoW! You are totally my point. How do you understand that? l

  Guess luck. Guessing is generally not the best way to solve problems. It is generally faster and more reliable to say exactly what you want, as well as give an example.

  fallen little more that I want to know, if I want to restrict the output not more then 2, which would be sql?

  Now, you're not even giving for example!
  Maybe you want something like this:

  SELECT     ad_id
  ,     ad_name
  FROM     acc_test
  WHERE     LEVEL     BETWEEN 2 AND 3          -- Changed
  START WITH     ad_id     = :target_ad_id
  CONNECT BY     ad_id     = PRIOR ad_spm_id
  ;
  

  which will show just the mother and grandmother of the given line.

  I work with the developer of forms a lot. Knowledge of SQL is like sql oracle (9i cerfitication) book. But this type of sql is not available here.
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  Certification is another matter entirely.
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  Here are a few sites that explain CONNECT BY queries:
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  http://www.oradev.com/connect_by.jsp

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  Dear Experts,

  My version of oracle is,

  Oracle9i Enterprise Edition Release 9.2.0.1.0 - Production

  PL/SQL Release 9.2.0.1.0 - Production

  CORE 9.2.0.1.0-Production

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  Table name: all_table

  Fields are: table_id, table_name, desc

  record of the sample: 1, EMP, EMPLOYMENT DETAILS

  Now I want to select all the contents of a perticular table, his name is all_table.

  (ie)

  Select * from (select table_name from all_table where table_id = 1);

  But it is not listing the details of the EMP table.  Its poster simply the name of the field "EMP".

  Please help me in this regard.

  Hello

  Whenever you make dynamic SQL statements, you must place the dynamic whole statement in a single string variable.  When debugging, display this string before running it.  If you get a runtime error that will show you the statement he makes, which often made the obvious cause.  For example:

  DECLARE

  CURSOR c IS

  SELECT table_name

  From user_tables;

  CNT NUMBER;

  sql_txt VARCHAR2 (1000);

  BEGIN

  FOR ut IN t

  LOOP

  sql_txt: = 'SELECT COUNT (*).

  || « DE » ' || t.table_name | '"';

  dbms_output.put_line (sql_txt |) "= sql_txt"); -For debugging

  EXECUTE IMMEDIATE sql_txt INTO cnt;

  dbms_output.put_line (' Table: ')

  || t.table_name

  || ' ('

  || CNT

  || "lines)"

  );

  END LOOP;

  END;

  /

  You can comment the put_line extra call when you are convinced that sylvie statement works.

  If you have non-standard table names (for example, names that contain spaces) you must place the names of the tables in double - quotes, as I did above.

• Small request help on the use of the global temporary table - some doubts

  
  Hi all

  Few days back according to a condition, I used a TWG (on the ranks of commit preserve).

  I created a trigger (before the insertion of line level) on GTT that calls a procedure (pragma autonomous transaction declared in the procedure).

  Procedure inserts data into two tables and I have a validation final (after the two insertion of data in tables) in the procedure.

  I tested by inserting the number of lines in TWG and found that the two tables are correctly supply procedure called by trigger.

  Which means that my works absolutely perfect functionality. (performance is also good)

  Now, my question is: since in the production source ETL tool will load this TWG.

  ETL will use this table in different processes simultaneously.

  Suppose that a single session ETL populates this table, and at the same time in parallel another session fills this table with different data. is there a lock on this TWG?

  Would the TWG is blocking other lines to add at any time?

  Is it possible that data may disappear without completing the entire process prematurely TWG?

  PS the feature I developed is the generic exception feature. This works for all valid tables for the database. For most of the tables will be filled with ETL, that's why I had these doubts in my mind.

  I apologize, if these seems like childish doubts.

  Thank you very much

  Arpit Agrawal

  Each line I'll get my GTT and follow all the features [trigger procedure &], will be considered as a session until the validation, right?

  This is not correct, a session is considered between the opening of session (session is created) and close the session (session is closed) of the database.

  If I use, validation TWG deletions here, how would he had differed on commit preserve as when my feature is completed, I don't want to keep more data.

  If on commit delete has been used here, it wouldn't make a difference in your case since you make is ENGAGING in some AUTONOMOUS OPERATIONS.

  In both cases, commit delete and commit preserve, you don't have to worry about the data inside the TWG because it will be empty onece you logoff (session ends).

  However, you can perform a delete operation in your session if you do not want to keep the data up to the end of the session.

• How to query other session data in a global temporary table

  Performance tune a sql statement that uses a table temporary overall (10g R2), it would be very useful that I could see the data of the TWG, which belongs to another session. Is this possible?

  I'm sure that's not possible. TWG are transaction or specific session data in it can be seen from the other sessions.