Question

想要将列整理从utf8mb4_unicode_ci更改为utf8mb4_bin

更新的SqlAlchemy模型是

col_name = Column(VARCHAR(10, collation='utf8mb4_bin'),  nullable=True)

我试过了

from alembic import op
import sqlalchemy as sa
import sqlalchemy.types as ty

def upgrade():

    op.alter_column('table_name',
        sa.Column('col_name', ty.VARCHAR(10, collation='utf8mb4_bin') )
    )

但是升级会将该列的MySQL排序规则保留为原始的utf8mb4_unicode_ci

Answer 1

找到正确的语法，即：

from alembic import op
import sqlalchemy.types as ty

def upgrade():

    op.alter_column('table_name','col_name', type_=ty.VARCHAR(10, collation='utf8mb4_bin'))

使用Alembic upgrade（）脚本更改MySQL列排序规则

1 个答案: