Deduplication in Oracle
Situation:-
Table 'A' is receiving data from OracleGoldenGate feed and gets the data as New,Updated,Duplicate feed that either creates a new record or rewrites the old one based on it's characteristics (N/U/D). Every entry in table has its UpdatedTimeStamp column contain insertion timestamp.
Scope:-
To write a StoredProcedure in Oracle that pulls the data for a time period based on UpdatedTimeStamp column and publishes an xml using DBMSXMLGEN.
How can I ensure that a duplicate entered in the table is not processed again ??
FYI-am currently filtering via a new table that I created, named as 'A-stg' and has old data inserted incrementally.
oracle plsql oracle12c
edited Nov 18 '18 at 11:43
Littlefoot
21.1k71533
asked Nov 18 '18 at 11:37
Mohit SharmaMohit Sharma
1
add a comment |
Situation:-
Table 'A' is receiving data from OracleGoldenGate feed and gets the data as New,Updated,Duplicate feed that either creates a new record or rewrites the old one based on it's characteristics (N/U/D). Every entry in table has its UpdatedTimeStamp column contain insertion timestamp.
Scope:-
To write a StoredProcedure in Oracle that pulls the data for a time period based on UpdatedTimeStamp column and publishes an xml using DBMSXMLGEN.
How can I ensure that a duplicate entered in the table is not processed again ??
FYI-am currently filtering via a new table that I created, named as 'A-stg' and has old data inserted incrementally.
oracle plsql oracle12c
edited Nov 18 '18 at 11:43
Littlefoot
21.1k71533
asked Nov 18 '18 at 11:37
Mohit SharmaMohit Sharma
1
Could you please provide us with the necessary table names and column names to provide you the necessary query
– Prasan Karunarathne
Nov 18 '18 at 12:15
add a comment |
Situation:-
Table 'A' is receiving data from OracleGoldenGate feed and gets the data as New,Updated,Duplicate feed that either creates a new record or rewrites the old one based on it's characteristics (N/U/D). Every entry in table has its UpdatedTimeStamp column contain insertion timestamp.
Scope:-
To write a StoredProcedure in Oracle that pulls the data for a time period based on UpdatedTimeStamp column and publishes an xml using DBMSXMLGEN.
How can I ensure that a duplicate entered in the table is not processed again ??
FYI-am currently filtering via a new table that I created, named as 'A-stg' and has old data inserted incrementally.
oracle plsql oracle12c
edited Nov 18 '18 at 11:43
Littlefoot
21.1k71533
asked Nov 18 '18 at 11:37
Mohit SharmaMohit Sharma
1
Situation:-
Table 'A' is receiving data from OracleGoldenGate feed and gets the data as New,Updated,Duplicate feed that either creates a new record or rewrites the old one based on it's characteristics (N/U/D). Every entry in table has its UpdatedTimeStamp column contain insertion timestamp.
Scope:-
To write a StoredProcedure in Oracle that pulls the data for a time period based on UpdatedTimeStamp column and publishes an xml using DBMSXMLGEN.
How can I ensure that a duplicate entered in the table is not processed again ??
FYI-am currently filtering via a new table that I created, named as 'A-stg' and has old data inserted incrementally.
oracle plsql oracle12c
oracle plsql oracle12c
edited Nov 18 '18 at 11:43
Littlefoot
21.1k71533
asked Nov 18 '18 at 11:37
Mohit SharmaMohit Sharma
1
edited Nov 18 '18 at 11:43
Littlefoot
21.1k71533
asked Nov 18 '18 at 11:37
Mohit SharmaMohit Sharma
1
edited Nov 18 '18 at 11:43
Littlefoot
21.1k71533
edited Nov 18 '18 at 11:43
Littlefoot
21.1k71533
edited Nov 18 '18 at 11:43
Littlefoot
21.1k71533
21.1k71533
asked Nov 18 '18 at 11:37
Mohit SharmaMohit Sharma
1
asked Nov 18 '18 at 11:37
Mohit SharmaMohit Sharma
1
asked Nov 18 '18 at 11:37
Mohit SharmaMohit Sharma
1
1
Could you please provide us with the necessary table names and column names to provide you the necessary query
– Prasan Karunarathne
Nov 18 '18 at 12:15
add a comment |
Could you please provide us with the necessary table names and column names to provide you the necessary query
– Prasan Karunarathne
Nov 18 '18 at 12:15
Could you please provide us with the necessary table names and column names to provide you the necessary query
– Prasan Karunarathne
Nov 18 '18 at 12:15
Could you please provide us with the necessary table names and column names to provide you the necessary query
– Prasan Karunarathne
Nov 18 '18 at 12:15
add a comment |
1 Answer
1
active
oldest
votes
As far as I understood the question, there are a few ways to avoid duplicates.
The most obvious is to use DISTINCT, e.g.
select distinct data_column from your_table
Another one is to use timestamp column and get only the last (or the first?) value, e.g.
select data_column, max(timestamp_column)
from your_table
group by data_column
answered Nov 18 '18 at 11:42
LittlefootLittlefoot
21.1k71533
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
As far as I understood the question, there are a few ways to avoid duplicates.
The most obvious is to use DISTINCT, e.g.
select distinct data_column from your_table
Another one is to use timestamp column and get only the last (or the first?) value, e.g.
select data_column, max(timestamp_column)
from your_table
group by data_column
answered Nov 18 '18 at 11:42
LittlefootLittlefoot
21.1k71533
add a comment |
As far as I understood the question, there are a few ways to avoid duplicates.
The most obvious is to use DISTINCT, e.g.
select distinct data_column from your_table
Another one is to use timestamp column and get only the last (or the first?) value, e.g.
select data_column, max(timestamp_column)
from your_table
group by data_column
answered Nov 18 '18 at 11:42
LittlefootLittlefoot
21.1k71533
add a comment |
As far as I understood the question, there are a few ways to avoid duplicates.
The most obvious is to use DISTINCT, e.g.
select distinct data_column from your_table
Another one is to use timestamp column and get only the last (or the first?) value, e.g.
select data_column, max(timestamp_column)
from your_table
group by data_column
answered Nov 18 '18 at 11:42
LittlefootLittlefoot
21.1k71533
As far as I understood the question, there are a few ways to avoid duplicates.
The most obvious is to use DISTINCT, e.g.
select distinct data_column from your_table
Another one is to use timestamp column and get only the last (or the first?) value, e.g.
select data_column, max(timestamp_column)
from your_table
group by data_column
answered Nov 18 '18 at 11:42
LittlefootLittlefoot
21.1k71533
answered Nov 18 '18 at 11:42
LittlefootLittlefoot
21.1k71533
answered Nov 18 '18 at 11:42
LittlefootLittlefoot
21.1k71533
answered Nov 18 '18 at 11:42
LittlefootLittlefoot
21.1k71533
21.1k71533
add a comment |
add a comment |
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Could you please provide us with the necessary table names and column names to provide you the necessary query
– Prasan Karunarathne
Nov 18 '18 at 12:15