Last Updated：2025/12/04

Dictionary quizzes to help you remember vocabulary

(databases) A join yielding a set of records for two tables, where all rows of the left table are enlisted with all rows of the right table, even if the join condition does not find any matching row on the right.

音声機能が動作しない場合はこちらをご確認ください

See correct answer

left outer join

Edit Histories（0）

Source Word

left outer join

Noun

(databases) A join yielding a set of records for two tables, where all rows of the "left" table are enlisted with all rows of the "right" table, even if the join condition does not find any matching row on the "right".

Japanese Meaning

左外部結合：データベースにおける結合方法の一つで、左右のテーブルのうち、左側のテーブルのすべての行を結果に含め、右側のテーブルとの結合条件に合致しない場合は右側の値がNULLとなる結合方式です。