How to skip a row to be inserted in staging table
Hi Everyone,
Actually i am transforming data from a source table to staging table and then staging to final table. I have generated a primary key using sequence. As i put the insert method of staging table as truncate/insert. So every time when mapping is loaded, staging table will be truncated and new data is inserted but as i am using sequence in staging table, it will give new numbering to old data from source table and it will duplicated this data into final target table. So for this reason i am using key look up on some of input attributes and than using expression i am trying to avoid duplication. In each output attributes in expression, I am putting the case statement
boldCASE WHEN INGRP1.ROW_ID IS NULL
THEN
INGRP1.ID
END*bold*
Due to this condition i am getting error
bold
Warning
ORA-01400: cannot insert NULL into ("SCOTT"."STG_TARGET_TABLE"."ROW_ID")
bold
But i am stuck when the value of row_id is null, at this what condition or statement should i write to skip the insertion of the data. I want to insert data only when ROW_ID IS NULL.
Kindly help me out.
Thanks
Regards
Suhail Dayer
You don't need the tables to be identical to use MINUS, only the "Select List" must match. Assuming you have the same Business key (one or more columns that uniquely identifies a row from your source data) in both the source and final table you can do the following:
- Use a Set Operation where the result is the Business Key of the Staging table MINUS the Business Key of the final table
- The output of the Set Operation is then joined to the Staging table to get the rest of the attributes for these rows
- The output of the Join is inserted into the final table
This will make sure only rows with new Business Keys are loaded.
Hope this helps,
Roald
Similar Messages
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How to check if row to be inserted will cause circular circular loop?
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I'm using connect by clause to do some processing and to check that the data is not causing circular loops (with SQLCODE = -1436).
Customers can add data via API, and this data, after inserted, can cause the problem explained above (loop). Therefore I need to find a way to check that these new values don't collide with the existing data in the table.
One way that currently works is to insert the data, use my pl/sql function to check that there's no loops; if there's a loop, i catch the exception, delete the rows I just inserted, and throw back the error to the user.
I find it very ugly and unneficient, but I can't find the way to use CONNECT BY with data that is not present in the table. example:
table my_table contains
parent_id | child_id
111 | 777
777 | 333
and now customer wants to insert:
parent_id | child_id
777 | 111
Also, if customer wants to insert
333 | 111
if I insert the row and run my script, it will work OK, but only if I insert the row. Is there any way to validate this without inserting/removing the row ?
the script I'm using is similar to the one posted here:
problems using CONNECT BY
thanksThis approach may fail to detect loops introduced by concurrent transactions if one of the transaction uses a serializable isolation level.
For example, assume there are two sessions (A and B), the table and trigger have been created, and the table is empty. Consider the following scenario.
First, session A starts a transaction with serializable isolation level:
A> SET TRANSACTION ISOLATION LEVEL SERIALIZABLE;
Transaction set.Next, session B inserts a row and commits:
B> INSERT INTO my_table (parent_id, child_id) VALUES (111, 777);
1 row created.
B> COMMIT;
Commit complete.Now, session A successfully inserts a conflicting row and commits:
A> INSERT INTO my_table (parent_id, child_id) VALUES (777, 111);
1 row created.
A> COMMIT;
Commit complete.
A> SELECT * FROM MY_TABLE;
PARENT_ID CHILD_ID
111 777
777 111Session A "sees" the table "as of" a point in time before session B inserted. Also, once session B commits, the lock it acquired is released.
An alternative approach that would prevent this could use SELECT...FOR UPDATE and a "table of locks" like this:
SQL> DROP TABLE MY_TABLE;
Table dropped.
SQL> CREATE TABLE MY_TABLE
2 (
3 PARENT_ID NUMBER,
4 CHILD_ID NUMBER
5 );
Table created.
SQL> CREATE TABLE LOCKS
2 (
3 LOCK_ID INTEGER PRIMARY KEY
4 );
Table created.
SQL> INSERT INTO LOCKS(LOCK_ID) VALUES(123);
1 row created.
SQL> COMMIT;
Commit complete.
SQL> CREATE OR REPLACE TRIGGER MY_TABLE_AI
2 AFTER INSERT ON my_table
3 DECLARE
4 v_count NUMBER;
5 v_lock_id INTEGER;
6 BEGIN
7 SELECT
8 LOCK_ID
9 INTO
10 v_lock_id
11 FROM
12 LOCKS
13 WHERE
14 LOCKS.LOCK_ID = 123
15 FOR UPDATE;
16
17 SELECT
18 COUNT (*)
19 INTO
20 v_count
21 FROM
22 MY_TABLE
23 CONNECT BY
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25
26 END MY_TABLE_AI;
27 /
Trigger created.Now the scenario plays out like this.
First, session A starts a transaction with serializable isolation level:
A> SET TRANSACTION ISOLATION LEVEL SERIALIZABLE;
Transaction set.Next, session B inserts a row and commits:
B> INSERT INTO my_table (parent_id, child_id) VALUES (111, 777);
1 row created.
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Commit complete.Now, when session A tries to insert a conflicting row:
A> INSERT INTO my_table (parent_id, child_id) VALUES (777, 111);
INSERT INTO my_table (parent_id, child_id) VALUES (777, 111)
ERROR at line 1:
ORA-08177: can't serialize access for this transaction
ORA-06512: at "TEST.MY_TABLE_AI", line 5
ORA-04088: error during execution of trigger 'TEST.MY_TABLE_AI'To show that this still handles other cases:
1. Conflicting inserts in the same transaction:
SQL> TRUNCATE TABLE MY_TABLE;
Table truncated.
SQL> INSERT INTO my_table (parent_id, child_id) VALUES (111, 777);
1 row created.
SQL> INSERT INTO my_table (parent_id, child_id) VALUES (777, 111);
INSERT INTO my_table (parent_id, child_id) VALUES (777, 111)
ERROR at line 1:
ORA-01436: CONNECT BY loop in user data
ORA-06512: at "TEST.MY_TABLE_AI", line 15
ORA-04088: error during execution of trigger 'TEST.MY_TABLE_AI'2. Read-committed inserts that conflict with previously committed transactions:
SQL> TRUNCATE TABLE MY_TABLE;
Table truncated.
SQL> INSERT INTO my_table (parent_id, child_id) VALUES (111, 777);
1 row created.
SQL> COMMIT;
Commit complete.
SQL> INSERT INTO my_table (parent_id, child_id) VALUES (777, 111);
INSERT INTO my_table (parent_id, child_id) VALUES (777, 111)
ERROR at line 1:
ORA-01436: CONNECT BY loop in user data
ORA-06512: at "TEST.MY_TABLE_AI", line 15
ORA-04088: error during execution of trigger 'TEST.MY_TABLE_AI'3. Conflicting inserts in concurrent, read-committed transactions:
a) First, empty out the table and start a read-committed transaction in one session (A):
A> TRUNCATE TABLE MY_TABLE;
Table truncated.
A> SET TRANSACTION ISOLATION LEVEL READ COMMITTED;
Transaction set.b) Now, start a read-committed transaction in another session (B) and insert a row:
B> SET TRANSACTION ISOLATION LEVEL READ COMMITTED;
Transaction set.
B> INSERT INTO my_table (parent_id, child_id) VALUES (111, 777);
1 row created.c) Now, try to insert a conflicting row in session A:
A> INSERT INTO my_table (parent_id, child_id) VALUES (777, 111);This is blocked until session B commits, and when it does:
B> COMMIT;
Commit complete.the insert in session A fails:
INSERT INTO my_table (parent_id, child_id) VALUES (777, 111)
ERROR at line 1:
ORA-01436: CONNECT BY loop in user data
ORA-06512: at "TEST.MY_TABLE_AI", line 15
ORA-04088: error during execution of trigger 'TEST.MY_TABLE_AI'If updates are permitted on the table, then they could cause loops also, but the trigger could be modified to test for this. -
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hi all,
i have three tables, first table enquiry(enqid, item, type) where all enquiries are entered. after that table bom (bomid, item, enqid, rawmatl) and route (bomid, routeid,routename). in this bom & route are Master Detail table, where entries are made on a later period. the requirement is to update 'type' in enquiry table during insert on Route table.
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<Transaction actualCostRate="0" billRate="0" chargeable="1" clientID="NikuUK" chargeCode="LCOCD1" externalID="L-RESCODE_UK1-PROJ_UK_CNT_GBP-37289-8" importStatus="N" projectID="TESTPROJ" resourceID="admin" transactionDate="2002-02-12" transactionType="L" units="11" taskID="5017601" inputTypeCode="SALES" groupId="123" voucherNumber="ABCVDD" transactionClass="ABCD"/>
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with w_acct1 as
(select 'A1' acct, 0 vers from dual
union all
select 'A2' acct, 0 vers from dual
union all
select 'A3' acct, 0 vers from dual
union all
select 'A1' acct, 1 vers from dual
union all
select 'A2' acct, 1 vers from dual
union all
select 'A1' acct, 2 vers from dual
union all
select 'A4' acct, 2 vers from dual)
select a.*,
nvl(lead(acct) over (partition by acct order by vers desc),'NULL') ld,
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end add_remove
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A3 0 NULL NEW
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A2 1 A2 NO_CHANGE
A1 2 A1 NO_CHANGE
A4 2 NULL NEW
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A2 0 NULL NEW
A3 0 NULL NEW
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A2 1 A2 NO_CHANGE
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SQL> ed
Wrote file afiedt.buf
1 with old_data as (select 1 as id, 'A' as dta from dual union all
2 select 2, 'B' from dual union all
3 select 3, 'C' from dual)
4 ,new_data as (select 1 as id, 'A' as dta from dual union all
5 select 3, 'X' from dual union all
6 select 4, 'Y' from dual)
7 --
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9 ,del_upd as (select * from old_data minus select * from new_data)
10 ,upd as (select id from ins_upd intersect select id from del_upd)
11 ,ins as (select id from ins_upd minus select id from upd)
12 ,del as (select id from del_upd minus select id from upd)
13 --
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15 from new_data join ins on (ins.id = new_data.id)
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17 select 'Updated', old_data.id, old_data.dta, new_data.id, new_data.dta
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1. In AMImpl: if the PK column attribute of the row does not have a value, then you know this is a new row.
2. In EOImpl: insertRow will be executed only if it is a new row.
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Thanks
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I am little confused with your logic here.....
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This initiates data transfer to the backend and the checkbox field in internal table is updated.
check the below code for example.
DATA: go_cont TYPE REF TO cl_gui_custom_container,
go_grid TYPE REF TO cl_gui_alv_grid,
gt_fieldcat TYPE lvc_t_fcat,
gv_language TYPE spras VALUE 'E',
gt_outtab TYPE TABLE OF bus_loca_demo WITH HEADER LINE.
START-OF-SELECTION.
CALL SCREEN 100.
* MODULE PBO OUTPUT *
MODULE pbo OUTPUT.
SET PF-STATUS 'BASIC'.
SET TITLEBAR '001'.
PERFORM create_and_init_alv CHANGING gt_outtab[]
gt_fieldcat.
ENDMODULE. "pbo OUTPUT
* MODULE PAI INPUT *
MODULE pai INPUT.
CASE sy-ucomm.
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SET SCREEN 0. LEAVE SCREEN.
WHEN 'PRINT'.
BREAK-POINT.
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CREATE OBJECT go_cont
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CREATE OBJECT go_grid
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FORM build_display_table.
FREE gt_outtab.
DO 10 TIMES.
gt_outtab-creation_partner = sy-index.
gt_outtab-date_field = sy-datum.
APPEND gt_outtab.
ENDDO.
ENDFORM. "build_display_table
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DATA ls_fcat TYPE lvc_s_fcat.
CALL FUNCTION 'LVC_FIELDCATALOG_MERGE'
EXPORTING
i_structure_name = 'BUS_LOCA_DEMO'
CHANGING
ct_fieldcat = pt_fieldcat.
LOOP AT pt_fieldcat INTO ls_fcat.
CASE ls_fcat-fieldname.
WHEN 'CHECKBOX'.
ls_fcat-checkbox = 'X'.
ls_fcat-edit = abap_true.
MODIFY pt_fieldcat FROM ls_fcat.
WHEN 'ENTER_FIELD' OR 'DBLCLICK_FIELD'.
ls_fcat-no_out = abap_true.
MODIFY pt_fieldcat FROM ls_fcat.
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ENDLOOP.
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Cheers,
Jose. -
How to identify which data has been inserted to the table in specific date
Hi,
i created one table without data column.. i am inserting data in that table.
i want which data has been inserted today..
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Thanks,If you are in Oracle 10g you can use ORA_ROWSCN.Note that unless the table was created with ROWDEPENDENCIES enabled, though, ORA_ROWSCN is tracked at the block level rather than the row level. So a block with one new row and many old rows could appear as having all been entered today.
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Hi,
I I would like to know how to see if a data was added/removed on a table for a particular date?Hello,
If the table does not have a date field that says when a record was inserted or updated, then you cannot know that information.
You can fix this by adding that date field to the table.
You can add a trigger that saves on history table that you need to create, when a record was inserted/updated/deleted.
Alternatively, you can use Change Data Capture.
http://blogs.msdn.com/b/manisblog/archive/2008/03/30/sql-server-2008-change-data-capture-part-i.aspx
Hope this helps.
Regards,
Alberto Morillo
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How to delete a row from a SQL Server CE Table with multiple JOINs?
I want to delete a record from a SQL Server CE table.
There are 3 tables scripts, options and results. I would like to remove a record from the results table. The where clause contains dynamic information which retrieved via other queries to different tables in the same database. These queries work fine and deliver
the desired data.
The Compact server is a clone of a remote table created using the sync framework. The same query to the remote table works fine.
The error I get is:
There was an error parsing the query. [ Token line number = 1,Token line offset = 10,Token in error = from ]
The code that throws the exception is as follows:
Dim connLoc As SqlCeConnection = New SqlCeConnection(My.Settings.ConnectionString)connLoc.Open() Dim strDel As String = "Delete r from ResultsTable r inner join OptionsTable o ON o.TestName=r.TestName inner join ScriptTable c ON r.TestName=c.TestName WHERE r.TestName = '" & ds1Loc.Tables(0).Rows(0)(1) & "' AND [Index] = '" & lstIndex & "'"Dim cmdDel As SqlCeCommand = New SqlCeCommandcmdDel.CommandText = strDelcmdDel.Connection = connLoccmdDel.ExecuteNonQuery()
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correct so should not be the problem.
I also tried using parameterised queries
Dim strDel As String = "Delete r from [ResultsTable] r inner join [OptionsTable] o ON o.TestName=r.TestName inner join [ScriptTable] c ON r.TestName=c.TestName WHERE r.TestName = @TestName AND [Index] = @lstIndex"
Dim cmdDel As SqlCeCommand = New SqlCeCommand cmdDel.CommandText = strDel
With cmdDel.Parameters
.Add(New SqlCeParameter("@TestName", ds1Loc.Tables(0).Rows(0)(1)))
.Add(New SqlCeParameter("@lstIndex", lstIndex))
End With
cmdDel.Connection = connLoc cmdDel.ExecuteNonQuery()
I have tried replacing the "=" with "IN" in the the WHERE clause but this has not worked.
Is it the join that is causing the problem? I can do a select with the same search criteria and joins from the same database.
Also this query works with SQL Server. Is it perhaps that SQL CE does not support the Delete function the same as SQL Server 2008? I have been looking at this for a while now and cannot find the source of the error. Any help would be greatly appreciated.Hello,
In SQL Server Compact, we can use join in FROM clause. The DELETE statement fail may be caused by the FOREIGN KEY constraint.
Please refer to:
DELETE (SQL Server Compact)
FROM Clause (SQL Server Compact)
Regards,
Fanny Liu
Fanny Liu
TechNet Community Support
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I am trying to install windows 7 on my macbook pro 13", when i run bootcamp it tells me that there is not a windows support software available for my computer. Where can i get the windows support software for my macbook?
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Can anyone tell me where I might find a basic flash photo gallery like the one at the USAToday Photo Gallery I have looked at the code and can't tell if this is a off-shelf system they're using. I've also googled the common Flash photo galleries, and
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Hi All, I have observed one thing. Whenever u add gaussian blur or Radial blur and on dragging slider to change its values, image in the preview appears distorted but still shows effect applying. And on mouse up after the drag, progress bar appears i
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Pismo will not update past 10.4.3
I have a g3 power book pismo, 400 mhz running Tiger that I bought on ebay. It has been upgraded to 512 mb of RAM and a 90 G hard drive (80 G available). Has operated flawlessly, however I recently noticed that software update has not updated Tiger at
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What are the form names for goods reciept , Goods sent , Billing and what are th corresponding transaction codes to check the form print preview ? I have already checked in TNAPR table but i didnt get. can anybody help me out?