Updating one table with mult. table where clause

I'm having problems with my update statement. I want to update one table that has a mulitple table where clause. Not sure how to accomplish this. Here is what I have so far.
update lawson.apvenmast a
set vendor_status = 'I'
where ((select * from apinvoice i
where i.due_date <= TO_DATE('20011231', 'YYYYMMDD') and
i.vendor = a.vendor)
((apvenmast.ven_class = 'INS') or
(apvenmast.ven_class = 'REF')));
Am I on the right track?
thanks in advance for any help.
Lisa Mears

A lot is missing.
where ((select * from apinvoice iA where clause should be like
where <something> IN (select <something> from ...)
((apvenmast.ven_class = 'INS') or
(apvenmast.ven_class = 'REF')));Where does this belong? There is no AND or OR with these two lines.
Check your table aliases too.

Similar Messages

Comparing Two tables with 300k records and update one table

Could you let me know how to compare two tables having 300k records and update one table.below is the scenario.
Table Tabl_1 has columns A,B and Tabl_2 has columns B,new_column.
Column B has same data in both the tables.
I need to update Tabl_2 in new_column with Tabl_1 A column data by comparing B column in both tables.
I m trying to do using PLSQL Tables.
Any suggestion?
Thanks.

Hi,
Whenever you have a problem, please post a little sample data (CREATE TABLE and INSERT statements, relevant columns only) from all tables involved, so that the people who want to help you can re-create the problem and test their ideas.
Also post the results you want from that data, and an explanation of how you get those results from that data, with specific examples.
If you're asking about a DML statement, such as UPDATE, the CREATE TABLE and INSERT statements should re-create the tables as they are before the DML, and the results will be the contents of the changed table(s) when everything is finished.
Always say which version of Oracle you're using (for example, 11.2.0.2.0).
See the forum FAQ: https://forums.oracle.com/message/9362002
ef2019c7-080c-4475-9cf4-2cf1b1057a41 wrote:
Could you let me know how to compare two tables having 300k records and update one table.below is the scenario.
Table Tabl_1 has columns A,B and Tabl_2 has columns B,new_column.
Column B has same data in both the tables.
I need to update Tabl_2 in new_column with Tabl_1 A column data by comparing B column in both tables.
I m trying to do using PLSQL Tables.
Any suggestion?
Thanks.
Why are you trying to use PL/SQL tables? If tabl_1 and tabl_2 are regular database tables, it will be much simpler and faster just to use them.
Depending on your requirements, you can do an UPDATE or MERGE, either in SQL or in PL/SQL.

How to update one table based on another table ??

Hello Friends:
I am trying to run the following query in oracle but it won't run.
UPDATE BOYS
SET
BOYS.AGE = GIRLS.AGE
FROM GIRLS
WHERE
BOYS.FIRSTNAME = GIRLS.FIRSTNAME AND
BOYS.LASTNAME = GIRLS.LASTNAME;
This query runs fine in sql server but in oracle its saying can't find "SET". PLease tell me what is the correct syntax in oracle to update one table based on another table.
thanks

See if this helps.
If you wrote an SQL statement:
update boys set age = 10;
Every row in the boys table will get updated with an age of 10. But if you wrote:
update boys set age = 10
where firstname = 'Joe';
Then only the rows where the firstname is Joe would be updated with an age of 10.
Now replace the 10 in the above statements with (select g.age from girls g where g.firstname = b.firstname and g.lastname = b.lastname) and replace where firstname = 'Joe' in the second statement with where exists (select null from girls g where g.firstname = b.firstname and g.lastname = b.lastname). The same concepts apply whether 10 is an actual value or a query and whether you have a where clause with the update statement to limit rows being updated.
About the select null question regarding the outer where clause:
Since the query is checking to see if the row in the girls table exists in the boys table what the column is in this select statement doesn't matter, this column isn't being used anywhere. In this case Todd chose to use null. He could have also used a column name from the table or a lot of times you'll see the literal value 1 used here.

Updating one table is updating ALL the materialized views

We have a number of tables and also a number of materialized views that are interconnected. For some unexplained reason, when we update one table that should refresh one materialized view, all the materialized views are refreshed. It's causing massive bottlenecks on our system and we can't find the cause. Does anyone have any thoughts?

"when we update one table that should refresh one materialized view, all the materialized views are refreshed" --If that table is used in the creation of all materialized views,then it will try to refresh all of them..(ON COMMIT REFRESH)

Cardinality estimator 2014 is off with OR in where clause

Here is my test setup on SQL Server 2014.
-- Create big table
CREATE TABLE [dbo].[Store](
Id int IDENTITY(1,1) NOT NULL,
City int NOT NULL,
Size int NOT NULL,
Name varchar(max) NULL,
CONSTRAINT [PK_Store] PRIMARY KEY CLUSTERED ([Id] ASC)
GO
CREATE NONCLUSTERED INDEX [IX_Store] ON [dbo].[Store] (City ASC, Size ASC)
GO
-- Fill with 100k rows
INSERT Store
SELECT i % 101, i % 11, 'Store ' + CAST(i AS VARCHAR)
FROM
(SELECT TOP 100000 ROW_NUMBER() OVER (ORDER BY s1.[object_id]) AS i
FROM sys.all_objects s1, sys.all_objects s2) numbers
GO
-- Create small table
CREATE TABLE #StoreRequest (City int NOT NULL, Size int NOT NULL)
GO
INSERT #StoreRequest values (55, 1)
INSERT #StoreRequest values (66, 2)
Now I execute the following query (I force the index to show statistics estimates)
SELECT s.City
FROM #StoreRequest AS r
INNER JOIN Store AS s WITH(INDEX(IX_Store), FORCESEEK)
ON s.City = r.City AND s.Size = r.Size
WHERE s.Size <> 1 OR r.City <> 55
Here are the estimates that I get (I'm not allowed to upload pictures):
Index Seek IX_Store
Actual Number of Rows: 90
Estimated Number of Rows: 50000
Fixing WHERE clause to use one table not two makes the estimate perfect:
SELECT s.City
FROM #StoreRequest AS r
INNER JOIN Store AS s WITH(INDEX(IX_Store), FORCESEEK)
ON s.City = r.City AND s.Size = r.Size
WHERE s.Size <> 1 OR s.City <> 55
Index Seek IX_Store
Actual Number of Rows: 90
Estimated Number of Rows: 89.74
Switching to 2012 compatibility mode gives estimate of 1 in both cases:
Index Seek IX_Store
Actual Number of Rows: 90
Estimated Number of Rows: 1
Could anyone explain the first result? I'm a bit worried about it. The fix in this case is trivial, but this problem gave us quite some headache in more complex real life queries with multiple joins.
Thank you!

But not full statistics on a field basis, just sometimes some default stats like total row count that some plans will build. Even your StoreRequest table only has one two-field index that will have a full histogram.
But I've seen SQL Server make massively bad plans on two-field indexes.
I've seen SQL Server go wrong one-column indexes, so that is not a very relevant point.
Temp tables or not, the estimate here is clearly incorrect. SQL Server knows the density of Size and City. It knows the cardinality of the temp table. The density information gives how many rows the the join will produce. The WHERE clause will then remove
a certain number of rows. With no statistics for the temp table, it does not now how many, but it will apply some standard guess.
50000 is a completely bogus number, because the join cannot produce that many rows, and SQL Server is able to compute the join with out the WHERE clause decently. (Well, it estimates 90, when the number is 180.) No, this is obviously a case of the cardinality
estimator giving up completely.
It is worth noting that both these WHERE clauses gives reasonable estimates:
WHERE r.Size <> 11 OR r.City <> 550
WHERE s.Size <> 11 OR s.City <> 550
Whereas these two gives the spooky 50000:
WHERE s.Size <> 11 OR r.City <> 550
WHERE r.Size <> 11 OR s.City <> 550
Erland Sommarskog, SQL Server MVP, [email protected]

On success of form save I want to go to another for with a detail where clause

I have the follow code snippet which is intented to go to a form on a successfull save. I query some data based on the save then build a url to navigate to a new form. I want the form to show only data that is lacking in one column not being populated (column is null). The url works, but the form detail where clause is ignored. Does anyone have any experience with passing detail where clauses to a form? Did I miss something in the code below?
begin
select count(rl_id) into n_rl_id_cnt
from rfq_lines
where part_part_id is null and rh_rh_id=n_rh_id;
exception
when others then
null;
end;
htp.p('cnt '||to_char(n_rl_id_cnt));
if n_rl_id_cnt>0 then
htp.p('cnt >1');
my_url := 'PORTAL30.wwa_app_module.link?' ||
'p_arg_names=_moduleid&p_arg_values=3677858481' ||
'&p_arg_names=_show_header&p_arg_values=YES' ||
'&p_arg_names=rh_id&p_arg_values=' || LTRIM(TO_CHAR(n_rh_id)) ||
'&p_arg_names=_rh_id_cond&p_arg_values=%3D'||
'&p_arg_names=_detail_where_clause&p_arg_values=part_part_id%20is%20null'; -- <this is not working right. where clause is ignored.
htp.p(my_url);
go (my_url);

Hi Jeffrey ,
You need to use a custom Format script for the field.
Regards
Sukrit Dhingra

Create a view with a changing where clause

Hi all,
i'm developing an application with oracle forms i want to create a view in the database with a different where clause in every time , the where clause is determined due to the department id of the current user .
thanks alot.

SQL> create view emp_view as select empno, ename, deptno from emp;
View created.
SQL> select * from emp_view where deptno = 10;
     EMPNO ENAME          DEPTNO
      7782 CLARK              10
      7839 KING               10
      7934 MILLER             10
SQL>

Define a Standalone Download Integrator with an Additional Where clause - SQL error

Hi,
I am trying to create a standalone integrator with an Additional Where clause. Followed the steps mentioned in the metalink note 360105.1. When I run the integrator, I get the following error message.
Please resolve the following error to continue.
SQL error: ORA-00936: missing expression occurred
processing stored SQL for Content 20007:GENERAL_441_CNT.
When I look at the log file, here is what I can see:
10/22/14 10:50 AM AJPRequestHandler-HTTPThreadGroup-15 TRACE          BneHrSQLControl - SQL:SELECT FROM PER_PEOPLE_V where last_name=$PARAM$.last_name
10/22/14 10:50 AM AJPRequestHandler-HTTPThreadGroup-15 TRACE          validateSQLStatement value of sqlStatement is: SELECT FROM PER_PEOPLE_V where last_name=:RSQLP1
10/22/14 10:50 AM AJPRequestHandler-HTTPThreadGroup-15 DETAIL         BneHrSQLControl.validateSQLStatement() paramName: last_name
10/22/14 10:50 AM AJPRequestHandler-HTTPThreadGroup-15 DETAIL         BneHrSQLControl.validateSQLStatement() error in SQL: java.sql.SQLSyntaxErrorException: ORA-00936: missing expression
So, clearly, the SQL statement that is getting built internally is wrong. Ideally, I would expect the statement to be something like this:
SELECT * FROM PER_PEOPLE_V where last_name=$PARAM$.last_name.
RDBMS : 11.2.0.3.0
Oracle Applications : 12.1.3
Any pointers towards the resolution of the issue would be of great help.
Thanks in Advance!
Lalitha.

This is a duplicate post of your other question: create trigger automatic
DO NOT start duplicate threads for the same question.
Locking this thread

Update One Table with three Apply Processes

Hi.
I have One Database Target with three APPLY processes updating a same table. Each APPLY process refer to a Source Capture remote process.
But I am verifying there is no update in the table when change data on Sources Databases. This table has a PK with two columns.
Someone has idea about this problem, and how to resolve it?
Thanks very much.
JoseFormiga

Hi.
See my definitions below with one table. I have a lot of tables with similar definitons:
SOURCE: (BD1)
=======
begin
dbms_streams_adm.add_table_rules (table_name => 'TSINMETRO.HW_COBRANCAS',
streams_type => 'capture',
streams_name => 'CAPTUPSIE_CAPTURE',
queue_name => 'STRMADMIN.CAPTUPSIE_QUEUE',
include_dml => true,
include_ddl => true,
inclusion_rule => true);
end;
begin
dbms_streams_adm.add_table_propagation_rules (table_name => 'TSINMETRO.HW_COBRANCAS',
streams_name => 'DE_MG_PARA_PSCI',
source_queue_name => 'STRMADMIN.CAPTUPSIE_QUEUE',
destination_queue_name => 'STRMADMIN.APPLYMG_QUEUE@psci',
include_dml => true,
include_ddl => true,
source_database => 'ipemmg',
inclusion_rule => true);
end;
declare
source_scn number;
begin
source_scn := dbms_flashback.get_system_change_number();
dbms_apply_adm.set_table_instantiation_scn@psci (source_object_name => 'TSINMETRO.HW_COBRANCAS' ,
source_database_name => 'ipemmg',
instantiation_scn => source_scn);
end;
begin DBMS_STREAMS_ADM.ADD_COLUMN(rule_name=>'HW_COBRANCAS595',table_name=> 'TSINMETRO.HW_COBRANCAS'
,column_name=>'SRV_UNF_ID',column_value =>ANYDATA.ConvertNumber(35),value_type=>'NEW',step_number=>1,operation=>'ADD'); END;
begin DBMS_STREAMS_ADM.ADD_COLUMN(rule_name=>'HW_COBRANCAS595',table_name=> 'TSINMETRO.HW_COBRANCAS'
,column_name=>'SRV_UNF_ID',column_value =>ANYDATA.ConvertNumber(35),value_type=>'OLD',step_number=>2,operation=>'ADD'); END;
Target:
=======
begin
dbms_streams_adm.add_table_rules (table_name => 'tsinmetro.HW_COBRANCAS',
streams_type => 'apply',
streams_name => 'applymg_apply',
queue_name => 'strmadmin.applymg_queue',
include_dml => true,
include_ddl => true,
source_database => 'ipemmg',
inclusion_rule => true);
end;
I have more two Source DBs doing so.
Thanks.
JoseFormiga

Trying to update one table from a second table when data is different

Hello;
I have a the same table in two databases. The database are connected with a DB Link. I am trying to update one of the tables based on the data in the second table when the EMP_ID matches but the LAST_NAME does not match.
The table(s) look like:
Table Name:EMP
EMP_ID
LAST_NAME
FIRST_NAME
MIDDLE_INITIAL
My SQL is:
update EMP TARGET
    set (TARGET.LAST_NAME, TARGET.FIRST_NAME,TARGET.MIDDLE_INITIAL) = (
        select SOURCE.LAST_NAME, SOURCE.FIRST_NAME, SOURCE.MIDDLE_INITIAL
        from EMP@OTHER_DB SOURCE where
        TARGET.PHYSICIAN_ID = SOURCE.PHYSICIAN_ID
        and TARGET.LAST_NAME <> SOURCE.LAST_NAME); This returns an update count of all the rows not the few that I want.
Any help would be great!

Hi,
Sky13 wrote:
Hello;
I have a the same table in two databases. The database are connected with a DB Link. I am trying to update one of the tables based on the data in the second table when the EMP_ID matches Do you <b>physician</b>_id?
but the LAST_NAME does not match.
The table(s) look like:
Table Name:EMP
EMP_ID
LAST_NAME
FIRST_NAME
MIDDLE_INITIAL
My SQL is:
update EMP TARGET
set (TARGET.LAST_NAME, TARGET.FIRST_NAME,TARGET.MIDDLE_INITIAL) = (
select SOURCE.LAST_NAME, SOURCE.FIRST_NAME, SOURCE.MIDDLE_INITIAL
from EMP@OTHER_DB SOURCE where
TARGET.PHYSICIAN_ID = SOURCE.PHYSICIAN_ID
and TARGET.LAST_NAME <> SOURCE.LAST_NAME); This returns an update count of all the rows not the few that I want.
Any help would be great!There's no WHERE clause in that UPDATE statement, so every row of the target table will be modified.
if you only want to modify the rows that have a match in the source table, then add a WHERE clause (perhaps "WHERE EXISTS (...) with a sub-query very miuch like the one you already have), or use MERGE instead of UPDATE.
If you'd like help, post CREATE TABLE and INSERT statements to re-create the tables as they exist before the UPDATE, and also post the contents of the changed table after the UPDATE.
Always say which version of Oracle you're using.
Perhaps you want something like this:
{code}
MERGE INTO     emp     target
USING     (
     SELECT     o.emp_id
          ,     o.last_name
          ,      o.last_name
          ,      o.middle_initial
          FROM     emp@other_db     o
          JOIN     emp          t ON     o.emp_id     = t.emp_id
                         AND     o.last_name     != t.last_name
     )          source
ON     (target.emp_id     = source.emp_id
WHEN MATCHED THEN UPDATE
SET     target.last_name     = source.last_name
,     target.first_name     = source.first_name
,     target.middle_initial     = source.middle_initial
{code}
assuming emp is unique, at least in other_db.
This will work in Oracle 10 (and up). In Oracle 9, MERGE always requires a WHEN MATCHED clause, so add one if you must. it doesn't matter what it does; the USING subquery will only return matches.
Edited by: Frank Kulash on Oct 10, 2011 4:45 PM

How to update one table from another

I am creating scripts in Oracle 10g. I have a table that has data corruption on three date fields.
I created a table with the following sql of all the affected rows:
CREATE TABLE LSU_INTER_FIX_DATE AS
select request_id,received_date,planned_start_date, actual_start_date
from lsu_inter2_requests_t
where received_date < to_date('01-JAN-1900')
OR planned_start_date < to_date('01-JAN-1900')
OR actual_start_date < to_date('01-JAN-1900')
I then repaired all of the rows with three data fixes
UPDATE LSU_INTER_FIX_DATE
SET received_date = TO_CHAR(received_date,'YY-MON') ||'-'||(TO_CHAR(received_date,'RRRR') + 2000)
where received_date < to_date('01-JAN-1900')
UPDATE LSU_INTER_FIX_DATE
SET planned_start_date = TO_CHAR(planned_start_date,'YY-MON') ||'-'||(TO_CHAR(planned_start_date,'RRRR') + 2000)
where planned_start_date < to_date('01-JAN-1900')
UPDATE LSU_INTER_FIX_DATE
SET actual_start_date = TO_CHAR(actual_start_date,'YY-MON') ||'-'||(TO_CHAR(actual_start_date,'RRRR') + 2000)
where actual_start_date < to_date('01-JAN-1900')
I now want to update the original base table with the corrected data so I wrote the following SQL UPDATE command:
UPDATE lsu_inter2_requests_t aaa
SET aaa.received_date = bbb.received_date
FROM LSU_INTER_FIX_DATE bbb WHERE aaa.request_id = bbb.request_id
When I run this sql Oracle returns the error “ORA-00933 SQL command not properly ended.” How do I update multiple rows in one table from another table that share the same primary key?

Comet wrote:
I am creating scripts in Oracle 10g. I have a table that has data corruption on three date fields.
I created a table with the following sql of all the affected rows:
CREATE TABLE LSU_INTER_FIX_DATE AS
select request_id,received_date,planned_start_date, actual_start_date
from lsu_inter2_requests_t
where received_date < to_date('01-JAN-1900')
OR planned_start_date < to_date('01-JAN-1900')
OR actual_start_date < to_date('01-JAN-1900')
I then repaired all of the rows with three data fixes
UPDATE LSU_INTER_FIX_DATE
SET received_date = TO_CHAR(received_date,'YY-MON') ||'-'||(TO_CHAR(received_date,'RRRR') + 2000)
where received_date < to_date('01-JAN-1900')
UPDATE LSU_INTER_FIX_DATE
SET planned_start_date = TO_CHAR(planned_start_date,'YY-MON') ||'-'||(TO_CHAR(planned_start_date,'RRRR') + 2000)
where planned_start_date < to_date('01-JAN-1900')
UPDATE LSU_INTER_FIX_DATE
SET actual_start_date = TO_CHAR(actual_start_date,'YY-MON') ||'-'||(TO_CHAR(actual_start_date,'RRRR') + 2000)
where actual_start_date < to_date('01-JAN-1900')
I now want to update the original base table with the corrected data so I wrote the following SQL UPDATE command:
UPDATE lsu_inter2_requests_t aaa
SET aaa.received_date = bbb.received_date
FROM LSU_INTER_FIX_DATE bbb WHERE aaa.request_id = bbb.request_id
When I run this sql Oracle returns the error “ORA-00933 SQL command not properly ended.” How do I update multiple rows in one table from another table that share the same primary key?I am not convinced you have what you think you have
>
UPDATE LSU_INTER_FIX_DATE
SET received_date = TO_CHAR(received_date,'YY-MON') ||'-'||(TO_CHAR(received_date,'RRRR') + 2000)
where received_date < to_date('01-JAN-1900')
When you want to produce a DATE datatype when starting with a string,
you must use TO_DATE() on the SET line!
(TO_CHAR(received_date,'RRRR') + 2000)since when do you do add characters (from TO_CHAR) with a constant number (2000)?
You should NEVER EVER rely on implicit datatype conversion
Edited by: sb92075 on Jul 27, 2011 7:09 PM

Oracle UPDATE syntax with JOIN and WHERE clause

I need to update one of my tables, and can't seem to get the syntax right. I've tried a 4 different approaches, but not having any luck. Any help would be greatly appreciated.
Attempt #1: Error: SQL command not properly ended
UPDATE TESTDTA.F4941
SET TESTDTA.F4941.RSDSTN=TESTDTA.F4981.FHRTDQ,TESTDTA.F4941.RSUMD1=TESTDTA.F4981.FHUOM
FROM TESTDTA.F4941
INNER JOIN TESTDTA.F4981
ON TESTDTA.F4941.RSSHPN = TESTDTA.F4981.FHSHPN
WHERE TESTDTA.F4941.RSSHPN = 647143
AND TESTDTA.F4941.RSDSTN = 0
AND TESTDTA.F4941.RSADDJ > 110365
AND TESTDTA.F4981.FHCGC1 = 'DIS';
Attempt #2: Error report: SQL Error: ORA-00904: "TESTDTA"."F4981"."FHUOM": invalid identifier 00904. 00000 - "%s: invalid identifier"
UPDATE (SELECT TESTDTA.F4941
FROM TESTDTA.F4941
INNER JOIN TESTDTA.F4981
ON TESTDTA.F4941.RSSHPN = TESTDTA.F4981.FHSHPN
WHERE TESTDTA.F4941.RSSHPN = 647143
AND TESTDTA.F4941.RSDSTN = 0
AND TESTDTA.F4941.RSADDJ > 110365
AND TESTDTA.F4981.FHCGC1 = 'DIS')
SET TESTDTA.F4941.RSDSTN=TESTDTA.F4981.FHRTDQ,TESTDTA.F4941.RSUMD1=TESTDTA.F4981.FHUOM
Attempt #3: Error report: SQL Error: ORA-00904: "TESTDTA"."F4941": invalid identifier 00904. 00000 - "%s: invalid identifier"
UPDATE (SELECT *
FROM TESTDTA.F4941
INNER JOIN TESTDTA.F4981
ON TESTDTA.F4941.RSSHPN = TESTDTA.F4981.FHSHPN
WHERE TESTDTA.F4941.RSSHPN = 647143
AND TESTDTA.F4941.RSDSTN = 0
AND TESTDTA.F4941.RSADDJ > 110365
AND TESTDTA.F4981.FHCGC1 = 'DIS')
SET TESTDTA.F4941.RSDSTN=TESTDTA.F4981.FHRTDQ,TESTDTA.F4941.RSUMD1=TESTDTA.F4981.FHUOM;
Attempt #4: Error: ORA-00925: missing INTO keyword 00925. 00000 - "missing INTO keyword"
MERGE TESTDTA.F4941
USING TESTDTA.F4981
ON (TESTDTA.F4941.RSSHPN = TESTDTA.F4981.FHSHPN
AND TESTDTA.F4941.RSSHPN = 647143
AND TESTDTA.F4941.RSDSTN = 0
AND TESTDTA.F4941.RSADDJ > 110365
AND TESTDTA.F4981.FHCGC1 = 'DIS'
WHEN MATCHED THEN
UPDATE SET TESTDTA.F4941.RSDSTN=TESTDTA.F4981.FHRTDQ
   ,TESTDTA.F4941.RSUMD1=TESTDTA.F4981.FHUOM;

thank you for the attempt, but I get this error trying your method...
Error report:
SQL Error: ORA-01779: cannot modify a column which maps to a non key-preserved table
01779. 00000 - "cannot modify a column which maps to a non key-preserved table"
*Cause:    An attempt was made to insert or update columns of a join view which
           map to a non-key-preserved table.
*Action:   Modify the underlying base tables directly.
as for the background of what I'm trying to...
I have 2 tables, one that has shipments with no miles (F4941 / Routing Steps), and another that does have miles (F4981 / Freight Audit History).
I want to update the miles & UnitOfMeasure columns for all shipments in the F4941 that currently have 0 miles with the miles found in the F4981 which are connected by Shipment number. Here's my same script, with simpler naming.
UPDATE RoutingSteps
SET RoutingSteps.Miles=FreightAuditHistory.Miles,RoutingSteps.UnitOfMeasure=FreightAuditHistory.UnitOfMeasure
FROM RoutingSteps
INNER JOIN FreightAuditHistory
ON RoutingSteps.ShipmentNumber = FreightAuditHistory.ShipmentNumber
WHERE RoutingSteps.ShipmentNumber = 647143
AND RoutingSteps.Miles = 0
AND RoutingSteps.ShipmentDate > 110365
AND FreightAuditHistory.Category = 'DIS';
hope this helps visualize my intent

Update vs Merge - Updating one table based on values in another

Hello
I have two tables lets say TAB_A and TAB_B. I altered table B to include a new column from table A
I wrote a merge statement as follows to merge the data
MERGE INTO TAB_A
USING TAB_B
ON (TAB_A.SECURITYPERSONKEY=TAB_B.SECURITYPERSONKEY)
WHEN MATCHED THEN
UPDATE SET TAB_A.PPYACCOUNT=TAB_B.PPYACCOUNT;
I know INSERT is for inserting new records
UPDATE to my knowledge is to modify currently existing records (loosely)
MERGE is one I rarely used, until this particular scenario.
The code works perfectly fine, but I was wondering how could I write an update statement? Or in this scenario should I even be using an update statement?

The MERGE is good and performs well, although it malfunctions (sometimes updating data wrongly) if the destination is a view with INSTEAD OF triggers.
The UPDATE with similar performance to the MERGE depends on SECURITYPERSONKEY being a unique or primary key on TAB_B. It is:
update (select TAB_A.PPYACCOUNT a_PPYACCOUNT, TAB_B.PPYACCOUNT b_PPYACCOUNT
        from TAB_A JOIN TAB_B on TAB_A.SECURITYPERSONKEY=TAB_B.SECURITYPERSONKEY)
SET A_PPYACCOUNT=B_PPYACCOUNT;
This can set multiple columns. It also currently doesn't work on a view with INSTEAD OF triggers.
Frank's update also works with multiple columns (eg also updating col2 and col2), with this syntax:
UPDATE tab_a
SET     (ppyaccount, col2, col3) = (
                         SELECT ppyaccount, col2, col3
                         FROM   tab_b
                         WHERE securitypersonkey = tab_a.securitypersonkey
WHERE   EXISTS       (
                         SELECT ppyaccount
                         FROM    tab_b
                         WHERE   securitypersonkey = tab_a.securitypersonkey

How to avoid deadlock when multithreading updates one table same time?

Multithreading calls the stored procedure at the same time to update data in one table. For a instance,
Table1
Col1 Col2 Col3
C1 1 1
C1 2 2
C1 3 3
C2 1 1
Table2
Col1 Col2 Col3
C1 1 10
C1 2 4
C1 3 3
C2 1 1
There are several steps I want:
1. Get the data in Table1 where Col1 = C1 in a cursor which has Col1 column and Col2 column.
2. Cycle them one by one, and get the Col3 data from Table2 where Col1 = C1 and Table2.Col2 = Table1.Col2. (Due to deadlock is my concern, we use temp table, definityly it is not a good way. :( )
3. Update Table1 Set Col3 = Table2.Col3.
My new idea is when I get the collection from Table1 which Col1 = C1, I use this way below.
First I set transaction in below way.
SET TRANSACTION ISOLATION LEVEL READ COMMITTED;
Then
select * from Table1 where Col1 = C1 for update nowait;
In my opinion, if one thread lock the data for update, other thread won't select out that locked data. Does it work?
Thank you.
Best regards,
Andreas

Why is the data submitted as a collection in the first place?
A collection is great as a program data structure - dealing with program variables. It is a very poor choice to use it to deal with Oracle data in a CRUD fashion.
The purpose, ito dealing with Oracle data, of a PL/SQL collection is for one thing and one thing only - context switching.
To reduce the number of times you need to step out of PL/SQL and into the SQL engine in order to pass data from one to the other. A collection allows you a bigger buffer area and thus less context switches.
And that's it.
A client (Java, C#, etc) that submits data to Oracle to be CRUD via a collection is a design flaw. A collection resides in "expensive" dedicated, non-sharable and non-scalable server memory.
In order to CRUD a collection, you either need to write bare bones feature methods yourself, or cast that collection into a SQL structure and use more powerful and flexible and feature rich SQL against it.
Which then begs the question - why did the client not submit that data directly to the SQL engine, either into a permanent table or a temporary table?
Performance and scalability are issues that need to be addressed at core design level. It is not something that can be tacked on and "fixed" after the fact. So you need to make very sure that your reasons for not wanting to use a temp table (for example), are valid and sound technical reasons.

Performance - composite index with 'OR' in 'WHERE' clause

I have a problem with the performance of the following query:
select /*+ index_asc(omschact oma_index1) */ knr, projnr, actnr from omschact where ((knr = 100 and actnr > 30) or knr > 100)
and rownum = 1;
(rownum used only for test purpose)
index:
create index on omschact (knr, projnr);
Execution plan:
Id Operation
0 SELECT STATEMENT
1 COUNT STOPKEY
2 TABLE ACCESS BY INDEX ROWID
3 INDEX FULL SCAN
If I'm correct, the 'OR' in the 'WHERE' clause is responsible for the INDEX FULL SCAN, what makes the query slow.
A solution would be then to separate the 'WHERE' clause in 2 separate select's (1 with 'knr = 100 and actnr > 30' and 1 with 'knr > 100' and combine the results with a UNION ALL.
Since it's necessary to have all rows in ascending order (oma_index1) I still have to use an ORDER BY to make sure the order of the rows is correct. This results again in a (too) low performance.
Another solution that does the trick is to create an index with the 2 fields (knr, projnr) concatenated and to use the same in the 'WHERE' clause:
create index oma_index2 on omschact (knr || projnr);
select /*+ index_asc(omschact oma_index2) */ knr, projnr, actnr from omschact where (knr || projnr) > 10030;
I just can't believe this work-around is the only solution, so I was hoping that someone here knows of a better way to solve this.

padders,
I'll give the real data instead of the example. The index I really use consists of 4 fields. In this table the fields are just numbers, but in other tables I need to use char-fields in indexes, so that's why I concatenate instead of using formula's (allthough I would prefer the latter).
SQL> desc omschact
Name Null? Type
KNR NOT NULL NUMBER(8)
PROJNR NOT NULL NUMBER(8)
ACTNR NOT NULL NUMBER(8)
REGELNR NOT NULL NUMBER(3)
REGEL CHAR(60)
first methode:
SQL> create index oma_key_001(knr,projnr,actnr,regelnr);
Index created.
SQL> select /*+ index_asc(omschact oma_key_001) */ * from omschact where
2 (knr > 100 or
3 (knr = 100 and projnr > 30) or
4 (knr = 100 and projnr = 30 and actnr > 100000) or
5 (knr = 100 and projnr = 30 and actnr = 100000 and regelnr >= 0));
Execution Plan
Plan hash value: 1117430516
| Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time |
| 0 | SELECT STATEMENT | | 11M| 822M| 192K (1)| 00:38:26 |
| 1 | TABLE ACCESS BY INDEX ROWID| OMSCHACT | 11M| 822M| 192K (1)| 00:38:26 |
|* 2 | INDEX FULL SCAN | OMA_KEY_001 | 11M| | 34030 (1)| 00:06:49 |
Predicate Information (identified by operation id):
2 - filter("KNR">100 OR "KNR"=100 AND "PROJNR">30 OR "KNR"=100 AND "PROJNR"=30
AND "ACTNR">100000 OR "ACTNR"=100000 AND "KNR"=100 AND "PROJNR"=30 AND
"REGELNR">=0)
second method (same index):
SQL> select * from (
2 select /*+ index_asc(omschact oma_key_001) */ * from omschact where knr > 100
3 union all
4 select /*+ index_asc(omschact oma_key_001) */ * from omschact where knr = 100 and projnr > 30
5 union all
6 select /*+ index_asc(omschact oma_key_001) */ * from omschact where knr = 100 and projnr = 30 and actnr > 100000
7 union all
8 select /*+ index_asc(omschact oma_key_001) */ * from omschact where knr = 100 and projnr = 30 and actnr = 100000 and regelnr > 0)
9 order by knr, projnr, actnr, regelnr;
Execution Plan
Plan hash value: 292918786
| Id | Operation | Name | Rows | Bytes |TempSpc| Cost (%CPU)| Time |
| 0 | SELECT STATEMENT | | 11M| 1203M| | 477K (1)| 01:35:31 |
| 1 | SORT ORDER BY | | 11M| 1203M| 2745M| 477K (1)| 01:35:31 |
| 2 | VIEW | | 11M| 1203M| | 192K (1)| 00:38:29 |
| 3 | UNION-ALL | | | | | | |
| 4 | TABLE ACCESS BY INDEX ROWID| OMSCHACT | 11M| 822M| | 192K (1)| 00:38:26 |
|* 5 | INDEX RANGE SCAN | OMA_KEY_001 | 11M| | | 33966 (1)| 00:06:48 |
| 6 | TABLE ACCESS BY INDEX ROWID| OMSCHACT | 16705 | 1272K| | 294 (1)| 00:00:04 |
|* 7 | INDEX RANGE SCAN | OMA_KEY_001 | 16705 | | | 54 (0)| 00:00:01 |
| 8 | TABLE ACCESS BY INDEX ROWID| OMSCHACT | 47 | 3666 | | 4 (0)| 00:00:01 |
|* 9 | INDEX RANGE SCAN | OMA_KEY_001 | 47 | | | 3 (0)| 00:00:01 |
| 10 | TABLE ACCESS BY INDEX ROWID| OMSCHACT | 1 | 78 | | 4 (0)| 00:00:01 |
|* 11 | INDEX RANGE SCAN | OMA_KEY_001 | 1 | | | 3 (0)| 00:00:01 |
Predicate Information (identified by operation id):
5 - access("KNR">100)
7 - access("KNR"=100 AND "PROJNR">30)
9 - access("KNR"=100 AND "PROJNR"=30 AND "ACTNR">100000)
11 - access("KNR"=100 AND "PROJNR"=30 AND "ACTNR"=100000 AND "REGELNR">0)
third method:
SQL> create index oma_test(to_char(knr,'00000000')||to_char(projnr,'00000000')||to_char(actnr,'00000000')||to_char(regelnr,'000'));
Index created.
SQL> select /*+ index_asc(omschact oma_test) */ * from omschact where
2 (to_char(knr,'00000000')||to_char(projnr,'00000000')||
3 to_char(actnr,'00000000')||to_char(regelnr,'000')) >=
4 (to_char(100,'00000000')||to_char(30,'00000000')||
5* to_char(100000,'00000000')||to_char(0,'000'))
Execution Plan
Plan hash value: 424961364
| Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time |
| 0 | SELECT STATEMENT | | 553K| 55M| 1712 (1)| 00:00:21 |
| 1 | TABLE ACCESS BY INDEX ROWID| OMSCHACT | 553K| 55M| 1712 (1)| 00:00:21 |
|* 2 | INDEX RANGE SCAN | OMA_TEST | 99543 | | 605 (1)| 00:00:08 |
Predicate Information (identified by operation id):
2 - access(TO_CHAR("KNR",'00000000')||TO_CHAR("PROJNR",'00000000')||TO_CHAR("
ACTNR",'00000000')||TO_CHAR("REGELNR",'000')>=TO_CHAR(100,'00000000')||TO_CHAR(3
0,'00000000')||TO_CHAR(100000,'00000000')||TO_CHAR(0,'000'))

Updating one table with mult. table where clause

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