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我已做出瞭如下的簡單腳本指定的值:的Python SQLAlchemy的:數據插入NULL值,而不是
#!/usr/bin/env python
# coding=utf-8
# -*- Mode: python; c-basic-offset: 4 -*-
from sqlalchemy import *
db=create_engine('postgresql://username:[email protected]/hello')
db.echo = False
metadata = MetaData(db)
people=Table('people',metadata)
# Insert Data
stmt=people.insert()
stmt.execute(name="Dimitrios",surname="Desyllas")
stmt.execute({'name':"Dionysis",'surname':"Arsenis"})
#Select Data
stmt=people.select()
results=stmt.execute().fetchone()
for result in results:
print "Result:"
print result
使用下面的PostgreSQL表:
hello=# \d people
Table "public.people"
Column | Type | Modifiers
---------+-----------------------+-----------------------------------------------------
id | integer | not null default nextval('people_id_seq'::regclass)
name | character varying(60) |
surname | character varying(60) |
(轉儲從PSQL)
當我運行腳本時,我得到沒有結果輸出,當我手動選擇查詢SELECT * FROM people
Ι得到以下結果:
hello=# SELECT * FROM people;
id | name | surname
----+------+---------
19 | |
20 | |
(2 rows)
我想知道爲什麼name
和surname
列沒有值。通過更換線http://www.rmunn.com/sqlalchemy-tutorial/tutorial.html