import select from sqlalchemy import table engine = create_engine("sqlite://") engine.execute("CREATE TABLE foo (id integer)") engine.execute("INSERT INTO foo (id) VALUES (1)") foo = table("foo", column("id")) result = engine.execute(select([foo.c.id])) print(result.fetchall()...
)definit_db():#数据库连接相关engine = create_engine("mysql+pymysql://root:123456@127.0.0.1:3306/s8sql?charset=utf8")#创建表Base.metadata.create_all(engine)defdrop_db(): engine= create_engine("mysql+pymysql://root:123456@127.0.0.1:3306/s8sql?charset=utf8")#删除表Base.metadata.drop_al...
cursor.execute(query, kwparameters or parameters) result = cursor.fetchall() return result finally: cursor.close() def get(self, query, *parameters, **kwparameters): """Returns the (singular) row returned by the given query. """ cursor = self._cursor() try: cursor.execute(query, kwpar...
skip:int=0,limit:int=100):returndb.query(User).offset(skip).limit(limit).all()# 条件查询defget_active_users(db:Session):returndb.query(User).filter(User.is_active==True).all()# 复杂查询defsearch_users(db:Session
importpyodbc# Connect to a databaseconn=pyodbc.connect('DRIVER={SQL Server};SERVER=localhost;DATABASE=testdb;UID=user;PWD=password')# Create a cursorcursor=conn.cursor()# Execute a querycursor.execute("SELECT * FROM users")# Fetch resultsrows=cursor.fetchall()forrowinrows:print(row)# Close...
print(result.fetchall()) 上面的程序使用了许多用户已经识别为“遗留”的模式,即Engine.execute()方法是connectionless execution系统。当我们针对1.4运行上述程序时,它返回一行: $ python test3.py [(1,)] 要启用“2.0弃用模式”,我们将启用SQLALCHEMY_WARN_20=1变量,并另外确保warnings filter选择了不会抑制任何...
Migrated issue, originally created by Michael Bayer (@zzzeek) that is, all the functions in http://www.postgresql.org/docs/9.4/static/functions-json.html need to be possible without building subclasses of functions.
result=cursor.fetchall() cursor.close() conn.close()foriinrange(20): t= threading.Thread(target=task, args=(i,)) t.start() View Code View Code 使用orm语句 创建数据库表 fromsqlalchemy.ext.declarativeimportdeclarative_basefromsqlalchemyimportColumn, Integer, String, DateTime,ForeignKey,UniqueCon...