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◀ 12. 【MySQLエラー】Incorrect column specifier for column 'カラム名' ▶

エラー内容

Incorrect column specifier for column 'カラム名'

 

発生条件/原因/対処法

ALTER TABLE文でAUTO_INCREMENTを付与した際に発生するエラー。（他のケースもある場合は追記）

対象カラムのデータ型がintではなくdecimalであったりAUTO_INCREMENTの許容するデータ型ではない場合に発生する。

以下のようにAUTO_INCREMENT付与のタイミングでデータ型も修正すればよい。

ALTER TABLE テーブル名 MODIFY `カラム名` int(10) NOT NULL AUTO_INCREMENT;
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  5. Datetime型がNULLに見える
  6. Warning: World-writable config file '/etc/mysql/my.cnf' is ignored
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  8. Exception: Wrong MySQL configuration
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  10. ERROR 1820 (HY000): You must reset your password using ALTER USER statement before executing this statement.
  11. ERROR 1819 (HY000): Your password does not satisfy the current policy requirements
  12. Incorrect column specifier for column 'カラム名'
  13. BLOB/TEXT column 'description' used in key specification without a key length
  14. ERROR: /bin/sh: mysql_config: コマンドが見つかりません
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  16. CSVエクスポート時に「ERROR 1045 (28000): Access denied for user 'username'@'localhost' (using password: YES)」
  17. Cannot execute statement: impossible to write to binary log since BINLOG_FORMAT = STATEMENT and at least one table uses a storage engine limited to row-based logging. InnoDB is limited to row-logging when transaction isolation level is READ COMMITTED or READ UNCOMMITTED.
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  56. SQLSTATE[22007]: Invalid datetime format: 1366 Incorrect string value: ~

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