Hi experts,
I never seen this before, and I wanted to know if it really makes a difference?
In the merge I usually do:
merge
..
when matched and
target.column <> source.column
But I have some legacy code and I see this:
OR CHECKSUM (TARGET.ID, TARGET.column1) <> CHECKSUM (SOURCE.ID, SOURCE.column1)
OR CHECKSUM (TARGET.ID, TARGET.column2) <> CHECKSUM (SOURCE.iID, SOURCE.column2)
OR CHECKSUM (TARGET.ID, TARGET.column3) <> CHECKSUM (SOURCE.ID, SOURCE.column3)
Why did that person add that? it really makes a difference the CHECKSUM?