Python SQLalchemy:alembic bulk_insert()失败
在将此标记为重复之前: 我确实看了一下,并按照它的建议做了,但当我添加此代码时:Python SQLalchemy:alembic bulk_insert()失败,python,mysql,sqlalchemy,alembic,Python,Mysql,Sqlalchemy,Alembic,在将此标记为重复之前: 我确实看了一下,并按照它的建议做了,但当我添加此代码时: permslookup = sa.Table('permslookup', sa.Column('perms_lookup_id', primary_key=True), sa.Column('name', sa.Unicode(40), index=True), sa.Column('description', sa.Text), sa.Column('value', sa.Num
permslookup = sa.Table('permslookup',
sa.Column('perms_lookup_id', primary_key=True),
sa.Column('name', sa.Unicode(40), index=True),
sa.Column('description', sa.Text),
sa.Column('value', sa.Numeric(10, 2)),
sa.Column('ttype', sa.PickleType(), index=True),
sa.Column('permission', sa.Unicode(40), index=True),
sa.Column('options', sa.PickleType())
)
然后运行alembic upgrade head
,我得到以下错误:
AttributeError: Neither 'Column' object nor 'Comparator' object has an attribute 'schema'
检查完整堆栈跟踪时,我注意到这是导致错误的原因:
sa.Column('options', sa.PickleType())
这是上面代码的最后一行。。。我如何解决这个问题?我不知道怎么解决它。。。任何形式的帮助都将不胜感激
以下是我要插入的数据:
op.bulk_insert('permslookup',
[
{
'id': 1,
'name': 'accounts',
'description': """ Have permission to do all transactions """,
'value': 1,
'ttype': ['cash', 'loan', 'mgmt', 'deposit', 'adjustments'],
'permission': 'accounts',
'options': None
},
{
'id': 2,
'name': 'agent_manage',
'description': """ Have permission to do cash, cash, loan and Management Discretion transactions """,
'value': 2,
'ttype': ['cash', 'loan', 'mgmt'],
'permission': 'agent_manage',
'options': None
},
{
'id': 3,
'name': 'corrections',
'description': """ Have permission to do cash, loan and adjustments transactions """,
'value': 3,
'ttype': ['cash', 'loan', 'adjustments'],
'permission': 'corrections',
'options': None
},
{
'id': 4,
'name': 'cashup',
'description': """ Have permission to do cash and loan transactions """,
'value': 4,
'ttype': ['cash', 'loan'],
'permission': 'cashup',
'options': None
},
]
)
尝试运行批量插入时出现的原始错误是:
AttributeError: 'str' object has no attribute '_autoincrement_column'
对于错误#1,信息不足。需要堆栈跟踪
对于#2,bulk_insert()接收表对象作为参数,而不是字符串名称
见:
对于第一个错误开关sa.表
和sa.列
:
来自sqlalchemy.sql导入表的列
当我创建表的对象时,它工作了。谢谢:)
from alembic import op
from datetime import date
from sqlalchemy.sql import table, column
from sqlalchemy import String, Integer, Date
# Create an ad-hoc table to use for the insert statement.
accounts_table = table('account',
column('id', Integer),
column('name', String),
column('create_date', Date)
)
op.bulk_insert(accounts_table,
[
{'id':1, 'name':'John Smith',
'create_date':date(2010, 10, 5)},
{'id':2, 'name':'Ed Williams',
'create_date':date(2007, 5, 27)},
{'id':3, 'name':'Wendy Jones',
'create_date':date(2008, 8, 15)},
]
)