EXPLAIN PLAN output shows how Oracle Database would run the SQL statement when the statement was explained. This plan can differ from the actual execution plan a SQL statement because of differences in the execution environment and explain plan environment. Note: To avoid possible SQL performance ...
FROM 절 PIVOT 및 UNPIVOT 예 JOIN 예 WHERE 절 WHERE 절의 Oracle 스타일 외부 조인 GROUP BY 절 집계 확장 HAVING 절 QUALIFY 절 UNION, INTERSECT 및 EXCEPT UNION 쿼리 예 UNION ALL 쿼리 예 INTERSECT 쿼리 예 EXCEPT 쿼리 예 ...