What should you search for and potentially replace after migrating to an SAP HANA database?

After migrating to an SAP HANA database, it is essential to search for and potentially replace native SQL statements. This is because SAP HANA supports a variety of SQL dialects and has specific optimizations and features that can improve both performance and functionality. Replacing native SQL statements ensures that developers leverage the full capabilities of HANA's in-memory architecture.

In contrast, while other options address valid concerns, they may not be as critical to review in the same context as native SQL statements. For example, left outer joins may still be necessary depending on the application logic, and code relying on implicit sorting should be checked as it might behave differently in HANA. However, the focus on native SQL is particularly important because it directly impacts how the database interacts with the application logic, potentially leading to performance issues or functionality that isn't optimal in HANA's environment.

Furthermore, while ORDER BY clauses can certainly influence performance and should be optimized as well, they are part of the broader SQL optimization processes rather than being a unique category requiring replacement post-migration. Therefore, focusing on native SQL statements aligns with best practices for ensuring effective adaptation to the HANA platform.