A SELECT statement can reference data in one or more sets of tables and views, including a mix of tables and views. The SELECT statement can define a join of tables or views.
You can join tables and views that have row-level security constraints, if the tables and views being joined have identical row-level security constraints. Otherwise, the system returns an error.
For more information about join operations, see Join Expressions.
For information about how the Optimizer processes joins, see Join Planning and Optimization.