- The role of SQL Override is to limit the number of incoming rows entering the mapping pipeline, whereas Lookup Override is used to limit the number of lookup rows to avoid the whole table scan by saving the lookup time and the cache it uses.
- Lookup Override uses the “Order By” clause by default. SQL Override doesn’t use it and should be manually entered in the query if we require it
- SQL Override can provide any kind of ‘join’ by writing the query
Lookup Override provides only Non-Equi joins.
- Lookup Override gives only one record even if it finds multiple records for a single condition
SQL Override doesn’t do that.
If you want to get hands-on learning on Informatica, you can also check out the tutorial given below. In this tutorial, you will learn about Informatica Architecture, Domain & Nodes in Informatica, and other related concepts.
