find the most recent record inserted by using rowid
Yes, I suspect that it is a bad idea!
I work with an application that has been modelled incorrectly. a historical table of the status had been modeled with a primary key on a key of the company and the entry into force instead of the date of the end of the recording of the State. There is one status as possible at the same time.
logic has been developed to insert new records of status with the dates of null terminator and then a trigger was provided that populated end dates except the one with the MAX (ROWID). so the hope is that ROWID will always get bigger.
now, the database has been moved in environments of promotion using data pump. in our development environments, it always seems to work. but not in promotional customers environments.
My question is: is there a setting associated with data pump that the client has used that does not respect the ROWID as it has in our development environment?
I'm trying to determine if there is a way to continue to use the old code without immediately re-development.
Thanks in advance for your comments.
so the hope is that ROWID will always get bigger.
It is an expectation that has no guarantee of being correct. He has a very good chance that a new line will have a lower value of the ROWID.
My question is: is there a setting associated with data pump that the client has used that does not respect the ROWID as it has in our development environment?
There is not this setting. Data pump just inserts rows into a table. Because we cannot guarantee that the next row will have a higher ROWID, then what you are looking for there is no.
It is time to rethink this misguided approach.
See you soon,.
Brian
Tags: Database
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How to find the most recent record?
How to find the most recent record?
Hello
It is part of our Bill the elements table, retrieved by the following query:
SELECT movimento, dt_movimento, cd_material,
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sole, pr_unitario
Of itemfat
WHERE cd_material IN ('722136', '759177', ' 810725', 818848')
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Seems that I whant to retrieve only the most recent records for each item, as:
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1588804 20/12/2007 810725 2102 1014182 1 96 10.9
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Can someone help me with a sentece SQL to do?
Thanks in advance.You can certainly do it:
SELECT movimento, dt_movimento, cd_material, cd_tp_operacao, nf, serie, quantidade, pr_unitario FROM itemfat i WHERE cd_material IN ('722136', '759177', '810725', '818848') AND cd_tp_operacao IN ('1102C', '2102C') AND dt_movimento = (SELECT MAX (dt_movimento) FROM itemfat d WHERE d.cd_material = i.cd_material AND d.cd_material IN ('722136', '759177', '810725', '818848') AND d.cd_tp_operacao IN ('1102C', '2102C')) ORDER BY cd_material, dt_movimento
: p
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Oracle version: 11.2
I have a table in ORACLE called RATES and it is EFFECTIVE_DATE, RATE_NAME, RATE_AMOUNT
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------------
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If you would care to post CREATE TABLE and INSERT statements for your sample data, and then I could test this.
If the combination (rate_name, effective_date) is not unique, this includes all rows that have the last effective_date for this rate_name. If you want exactly one line per rate_name when there is a tie, then add the columns of tiebreaker to analytical or use ROW_NUMBER instead of RANK ORDER BY clause.
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Could someone help me with this please?
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Thanks in advance!If you use the analytical function LAG you can 'Watch' data of previous lines...
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5.
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HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer
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