Flask 㨠SQLAlchemy 㧠Web ã¢ããªãã¤ããã¨ã ãã¡ãã¨ãã¹ããæ¸ãããâApplication Factories Pattern ã使ã DB ããã¡ãã¨ãã¼ã¸ã§ã³ç®¡çãããâAlembic ã使ã ã¨ããåæã§ãããã« Alembic ã® version ãã¡ã¤ã«ã¨ SQLAlchemy ã® declarative ãªã¢ãã«ã«åããããªãã¼ãã«å®ç¾©ãæ¸ããããªããã¤ã¾ã version ãã¡ã¤ã«ã« def upgrade(): op.create_table( 'users, sa.Column('id', sa.Integer, primary_key=True), sa.Column('username', sa.String, nullable=False) )
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