SQLのエラー一覧と解決方法（10件）
実在のSQLエラーメッセージを収録。各ページで原因と直し方を日本語で解説しています。
- ERROR: column reference is ambiguous
- ERROR: relation does not exist
- ERROR: duplicate key value violates unique constraint
- ERROR: deadlock detected
- ERROR: syntax error at or near
- 1452 Cannot add or update a child row: a foreign key constraint fails
- ERROR: more than one row returned by a subquery used as an expression
- 1055 ... not in GROUP BY and contains nonaggregated column
- ERROR: operator does not exist: character varying = integer
- could not serialize access due to concurrent update
エラー文を貼って探すならエラーメッセージ検索ツールが便利です。