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/**---- 最適化目標 ----**/ | |
-- 全体最適 | |
SELECT /*+ ALL_ROWS */ FROM DUAL; | |
-- 最初のn行に対して最適化 | |
SELECT /*+ FIRST_ROWS (1) */ FROM DUAL; | |
/**---- アクセスパス ----**/ | |
-- テーブル全体を走査 | |
SELECT /*+ FULL(A) */ FROM DUAL A; |