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ã¯ã˜ã‚ã« pythonã‹ã‚‰MySQLã‚’å©ã際，何を使ã£ã¦ã„ã¾ã™ã‹ï¼ŸSQLAlchemy,Django,peeweeã‚ãŸã‚Šã‚’使ã£ã¦ã„ã‚‹æ–¹ãŒå¤šã„ã®ã§ã¯ãªã„ã§ã—ょã†ã‹ï¼Žç§ã¯è‰²ã€…使ã£ã¦ã¿ã¦çµå±€SQLAlchemyã«è½ã¡ç€ã„ã¦ã„ã¾ã™ãŒï¼Œä½•åƒä¸‡ï¼Œä½•å„„オーダã®ãƒ‡ãƒ¼ã‚¿ã«ãªã‚‹ã¨å‡¦ç†ãŒé…ãéžå¸¸ã«ã‚„ã£ã‹ã„ã§ã™ï¼Ž ãªã®ã§ä»Šå›žã¯ï¼ˆå¤§ããªãƒ‡ãƒ¼ã‚¿ã«sql使ã†ãªã¨ã‹é«˜é€Ÿå‡¦ç†ã«python使ã†ãªã¨ã„ã†è©±ã¯ä¸€æ—¦ç½®ã„ã¦ãŠã„ã¦ï¼‰ï¼ŒSQLAlchemyを使ã£ãŸãƒ‡ãƒ¼ã‚¿å‡¦ç†ã‚’ã„ã‹ã«é«˜é€Ÿã«ã™ã‚‹ã‹ï¼Œä½•é …ç›®ã‹ã«åˆ†ã‘ã¦å‚™å¿˜éŒ²ã‚’残ã—ã¦ãŠãã¾ã™ï¼Ž SQLAlchemyã‚’~ã¨æ›¸ã„ã¦ã‚ã‚Šã¾ã™ãŒï¼ŒSQLAlchemyを使ã£ã¦DBã«ãƒ‡ãƒ¼ã‚¿ã‚’INSERT,SELECTã™ã‚‹éš›ã®python高速化TIPSã”ã£ãŸç…®ã§ã™ï¼Žæœ¬å½“ã¯è¨˜äº‹ã‚’分ã‘ãŸã»ã†ãŒè‰¯ã„ã®ã§ã™ãŒï¼Œè‡ªåˆ†ã§è¦‹è¿”ã™éš›ã«ã¾ã¨ã¾ã£ã¦ã„ã‚‹ã»ã†ãŒå¬‰ã—ã„ã®ã§ã“ã†ã—ã¾ã—ãŸï¼Ž ãªãŠï¼Œä»Šå›žä½¿ç”¨ã™ã‚‹ã‚³ãƒ¼ãƒ‰ã¯å…¨ã¦githubã«
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SQLAlchemyã®ä½¿ã„方を勉強ã—ã¦ã¾ã™ã€‚ å‰å›žã«å¼•ã続ãã€ãƒãƒ¥ãƒ¼ãƒˆãƒªã‚¢ãƒ«ã«æ²¿ã£ã¦é€²ã‚ã¦ã¿ã¾ã™ã€‚ http://docs.sqlalchemy.org/en/latest/orm/tutorial.html 今回もPostgreSQLã«ä½œæˆã—ãŸstudentsテーブルã®ãƒ‡ãƒ¼ã‚¿ã‚’使用ã—ã¾ã™ã€‚ sample=# select * from students; id |        name        |        kana ----+--------------------+-------------------------- 18 | 西ä½ã€€ã¿ã»Â    | ニシズミ　ミホ 19 | æ¦éƒ¨ã€€æ²™ç¹”    | タケベ　サオリ 20 | 五å鈴　è¯Â    | イスズ　ãƒãƒŠ 21 | 秋山　優花里 | ã‚¢ã‚ヤマ　ユカリ 22 | 冷泉　麻å    | レイゼイ　マコ (5 rows) R
Relationships API — SQLAlchemy 2.0 Documentation
function sqlalchemy.orm.relationship(argument: _RelationshipArgumentType[Any] | None = None, secondary: _RelationshipSecondaryArgument | None = None, *, uselist: bool | None = None, collection_class: Type[Collection[Any]] | Callable[[], Collection[Any]] | None = None, primaryjoin: _RelationshipJoinConditionArgument | None = None, secondaryjoin: _RelationshipJoinConditionArgument | None = None, bac
最近覚ãˆãŸSQLAlchemyã®Tips
先週ã¯ã€ãƒ¬ã‚¬ã‚·ãƒ¼ãªOracleデータベースã¨æ ¼é—˜ã—ã¦ã„ãŸ(æ–‡å—エンコーディングã®ä»¶ã‚‚ãã®ä¸€ã¤)。 __table__ã¨__tablename__ã®é•ã„ __table__ã¯é©åˆ‡ã«è¨å®šæ¸ˆã¿ã®ãƒ†ãƒ¼ãƒ–ルã«å¯¾ã—ã¦ä½¿ã†ã‚‰ã—ã„。自分ã§ã”ã¡ã‚ƒã”ã¡ã‚ƒã¨è¨å®šã—ãŸã„å ´åˆã¯__tablename__ã¨__table_args__を使ã†ã¹ã— How to override a column name in sqlalchemy using reflection and descriptive syntax 複åˆãƒ—ライマリーã‚ーã§ã®one-to-many 主ã‚ーãŒè¤‡åˆãƒ—ライマリーã‚ーã®å ´åˆã¯ãã‚Œãžã‚Œã«primary_key=Trueã‚’ã¤ã‘ã‚‹ãŒã€å¤–部ã‚ーã§ä¸€å¯¾å¤šã®é–¢é€£ä»˜ã‘ã‚’ã—ãŸã„å ´åˆã«ã¯ __table_args__ã§å¤–部ã‚ーè¨å®šã‚’ã—ã¦ãŠã。 class Protocol(Base): __tablename__ =
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