Aggregate/Sum of child attribute in ADF View Link using Groovy - ADF 12c

Create a new transient attribute in master VO to hold Sum value. Choose below properties

For expression value (yourColumnName is from child VO)

For refresh expression value

how to restore dropped table and data after commit.

 FLASHBACK TABLE <table_name> TO BEFORE DROP;

Find more at link below

https://docs.oracle.com/database/121/ADMQS/GUID-1DE547D1-3AF0-4269-8BAA-4C298EC05905.htm