SQL compatibility level refers to the version of SQL that a database is set to use. Compatibility levels determine which SQL features are available in a given database and can impact the behavior of queries and stored procedures. Checking the SQL compatibility level is essential for ensuring that applications are using the correct version of SQL and that they are compatible with the database.
The importance of checking SQL compatibility level cannot be overstated. Using an incompatible compatibility level can lead to errors, unexpected behavior, and even data corruption. It is important to check the compatibility level before making any changes to a database or before deploying new applications.