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A Generic Cascade Update Procedure

Oracle Tips by Mike Ault

The Cascade Update Procedures

--
BEGIN
--
-- open and fetch values with cursor
--
 OPEN get_table_name;
 FETCH get_table_name INTO update_rec;
--
-- now that cursor status is open and values in
-- variables can begin loop
--
LOOP
--
-- using the notfound status we had to pre-populate
-- record
--
   EXIT WHEN get_table_name%NOTFOUND;
--
-- Initiate call to the update_column procedure
--
   update_column(old_value, new_value, update_rec.table_name,
update_rec.column_name);
--
-- Now get next record from table
--
   FETCH get_table_name INTO update_rec;
--
-- processing returns to loop statement
--
 END LOOP;
--
-- close cursor and exit
--
 CLOSE get_table_name;
--
-- end of procedure
--
END update_tables;
--
-- end of package body
--
END cascade_update;
/

Figure 2: The package containing the procedures for cascade update

SEE CODE DEPOT FOR FULL SCRIPTS


For more information on this topic, I recommend Don Burleson's latest book "Oracle Tuning: The Definitive Reference". 

You can buy it direct from the publisher for 50%-off and get instant access to the code depot of Oracle tuning scripts:

http://www.rampant-books.com/book_1002_oracle_tuning_definitive_reference_2nd_ed.htm


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