Thread: Materialized View Incremental Refresh right join

Materialized View Incremental Refresh right join

From

hariprasath nallasamy

Date:

02 September 2016, 15:16:59

Hi all

Using logical decoding i set up a plugin to refresh materialized views incrementally(only the changes that are did after the previous refresh). I used the approach that oracle uses for fast refresh of materialized view using log table to record delta changes.

Mostly i covered for single table and for join(left and right) its an ideal solution but whenever a right join comes to play a role, its hard to get these delta change. Any insights so that i get to proceed further..?

P.S: For left join Foreign key constraint is followed
Example the view joining 3 tables as [T1 left join T2 left join T3]

Foreign key constraints are imposed so that, a key in T1 is deleted only after the same keys in T2 and T3 are deleted

Happy weekend

-harry