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START WITH
Learn START WITH in Oracle SQL through the exact construct, a dedicated example, a boundary case, and a mastery check.
START WITH is an atomic Oracle SQL lesson inside Hierarchical & Analytic SQL. The example uses the specific syntax, command, API, instruction, or language rule named by this lesson.
Study the construct itself, then change one relevant input and predict the result before running it. That keeps this lesson focused on START WITH rather than on generic Oracle SQL syntax.
Topic-specific example
SELECT employee_id FROM employees START WITH employee_id=1 CONNECT BY PRIOR employee_id=manager_id;
Test START WITH with an empty result, NULL/missing value, duplicate key, or concurrent operation where relevant; database behavior should be verified at the boundary shown by this example.