sqlite3 中的列详细信息 [英] column details in sqlite3

问题描述

在 SQLITE 数据库中，如果我需要表元详细信息，可以运行以下命令

In SQLITE database, if I need table meta details, I can run the following command

C:\sqlite>sqlite3.exe sqlite2.db
SQLite version 3.7.15 2012-12-12 13:36:53
Enter ".help" for instructions
Enter SQL statements terminated with a ";"
sqlite> PRAGMA table_info(forum_forum);
0|id|integer|1||1
1|category_id|integer|0||0
2|name|varchar(100)|1||0
3|description|varchar(200)|1||0
4|locked|bool|1||0

我想在 sqlalchemy 中做类似的事情.有人能告诉我怎么做吗?

I want to do the similar stuff in sqlalchemy. Can somebody tell me how to do this ?

from sqlalchemy import *
from sqlalchemy.orm import sessionmaker

db_target = create_engine('sqlite:///C:\\Users\\asit\\workspace\\forum1\\src\\sqlite.db')
session = sessionmaker(db_target, autocommit = True)()

rs = session.execute("PRAGMA table_info(forum_forum)")
for row in rs:
    print '%s %s %s %s %s' % (row['cid'], row['name'], row['type'], row['notnull'], row['pk'])

输出:-

0 id integer 1 1
1 category_id integer 0 0
2 name varchar(100) 1 0
3 description varchar(200) 1 0
4 locked bool 1 0

推荐答案

你可以通过以下方式获得很多细节

you can get a lot of details in the following way

from sqlalchemy import *

db_target = create_engine('sqlite:///C:\\Users\\asit\\workspace\\forum1\\src\\sqlite.db')
target_metadata = MetaData(db_target)
src_master_table = Table('forum_forum', src_metadata, autoload=True )
print src_master_table.columns._data 

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