ok, tks. 在 2018年7月24日星期二 UTC+8上午2:06:06,Mike Bayer写道: > > On Mon, Jul 23, 2018 at 1:57 PM, Yingchen Zhang <cevin....@gmail.com > <javascript:>> wrote: > > class User(db.Model): > > __tablename__ = 'users' > > id = db.Column(db.BigInteger, primary_key=True) > > name = db.Column(db.VARCHAR(50), nullable=False, unique=True) > > email = db.Column(db.VARCHAR(200), nullable=False) > > > > mobile = db.Column(db.VARCHAR(20)) > > > > created_at = db.Column(db.TIMESTAMP(False), nullable=False, > > default=func.now()) > > > > __table_args__ = ( > > Index('idx_users_name', func.lower('name'), unique=True), > > Index('idx_users_email', func.lower('email'), unique=True) > > ) > > > > def __init__(self): > > if not self.created_at: > > self.created_at = now() > > > > def __repr__(self): > > return '<User %s>' % self.name > > > > > > got a warning: > > > > UserWarning: autogenerate skipping functional index idx_users_email; not > > supported by SQLAlchemy reflection warnings.warn(msg) > > UserWarning: autogenerate skipping functional index idx_users_name; not > > supported by SQLAlchemy reflection warnings.warn(msg) > > > your code is correct. it sounds like you are attempting to use > autogenerate in Alembic to add these indexes in a new migration. you > have to specify them manually because autogenerate does not support > function-based indexes (e.g. the lower() function). > > > > > > > > -- > > SQLAlchemy - > > The Python SQL Toolkit and Object Relational Mapper > > > > http://www.sqlalchemy.org/ > > > > To post example code, please provide an MCVE: Minimal, Complete, and > > Verifiable Example. See http://stackoverflow.com/help/mcve for a full > > description. > > --- > > You received this message because you are subscribed to the Google > Groups > > "sqlalchemy" group. > > To unsubscribe from this group and stop receiving emails from it, send > an > > email to sqlalchemy+...@googlegroups.com <javascript:>. > > To post to this group, send email to sqlal...@googlegroups.com > <javascript:>. > > Visit this group at https://groups.google.com/group/sqlalchemy. > > For more options, visit https://groups.google.com/d/optout. >
-- SQLAlchemy - The Python SQL Toolkit and Object Relational Mapper http://www.sqlalchemy.org/ To post example code, please provide an MCVE: Minimal, Complete, and Verifiable Example. See http://stackoverflow.com/help/mcve for a full description. --- You received this message because you are subscribed to the Google Groups "sqlalchemy" group. To unsubscribe from this group and stop receiving emails from it, send an email to sqlalchemy+unsubscr...@googlegroups.com. To post to this group, send email to sqlalchemy@googlegroups.com. Visit this group at https://groups.google.com/group/sqlalchemy. For more options, visit https://groups.google.com/d/optout.