插入是否最佳？

我想插入一些數據到表中，我希望多插入儘可能快。我使用Python的sqlalchemy庫。我想知道如果我的插入是最優的，或者有更好的方法做that.Here是我的代碼：插入是否最佳？

from sqlalchemy import * 
    from sqlalchemy import schema 

    metadata = schema.MetaData() 

    engine = create_engine('sqlite:///:memory:', echo=True) 

    users = Table('users', metadata, 
     Column('id', Integer, primary_key=True), 
     Column('firstname', String(40)), 
     Column('lastname', Integer), 
     ) 

    metadata.create_all(engine) 
    ins = users.insert() 
    conn = engine.connect() 

    conn.execute(users.insert(), [ 
     {'id': 1, 'firstname' : 'Name1', 'lastname' : 'Lname1'}, 
     {'id': 2, 'firstname' : 'Name2', 'lastname' : 'Lname2'}, 
     {'id': 3, 'firstname' : 'Name3', 'lastname' : 'Lname3'} 
    ]) 

    metadata.bind = engine

來源

2011-11-18 Karen Tsirunyan

看起來不錯..迄今爲止！ –

如果你看到的日誌，那麼你可以檢查

2011-11-22 10:15:37,188 INFO sqlalchemy.engine.base.Engine SELECT DATABASE() 
2011-11-22 10:15:37,188 INFO sqlalchemy.engine.base.Engine() 
2011-11-22 10:15:37,191 INFO sqlalchemy.engine.base.Engine SHOW VARIABLES LIKE 'character_set%%' 
2011-11-22 10:15:37,191 INFO sqlalchemy.engine.base.Engine() 
2011-11-22 10:15:37,193 INFO sqlalchemy.engine.base.Engine SHOW VARIABLES LIKE 'lower_case_table_names' 
2011-11-22 10:15:37,193 INFO sqlalchemy.engine.base.Engine() 
2011-11-22 10:15:37,194 INFO sqlalchemy.engine.base.Engine SHOW COLLATION 
2011-11-22 10:15:37,194 INFO sqlalchemy.engine.base.Engine() 
2011-11-22 10:15:37,200 INFO sqlalchemy.engine.base.Engine SHOW VARIABLES LIKE 'sql_mode' 
2011-11-22 10:15:37,201 INFO sqlalchemy.engine.base.Engine() 
2011-11-22 10:15:37,203 INFO sqlalchemy.engine.base.Engine DESCRIBE `users` 
2011-11-22 10:15:37,203 INFO sqlalchemy.engine.base.Engine() 
2011-11-22 10:15:37,204 INFO sqlalchemy.engine.base.Engine ROLLBACK 
2011-11-22 10:15:37,206 INFO sqlalchemy.engine.base.Engine 
CREATE TABLE users (
    id INTEGER NOT NULL AUTO_INCREMENT, 
    firstname VARCHAR(40), 
    lastname INTEGER, 
    PRIMARY KEY (id) 
) 


2011-11-22 10:15:37,206 INFO sqlalchemy.engine.base.Engine() 
2011-11-22 10:15:37,331 INFO sqlalchemy.engine.base.Engine COMMIT 
2011-11-22 10:15:37,333 INFO sqlalchemy.engine.base.Engine INSERT INTO users (id, firstname, lastname) VALUES (%s, %s, %s) 
2011-11-22 10:15:37,333 INFO sqlalchemy.engine.base.Engine ((1, 'Name1', 'Lname1'), (2, 'Name2', 'Lname2'), (3, 'Name3', 'Lname3'))

只有一個插入所有值，所以我認爲這是插入批量/批量數據的最佳方式。

來源

2011-11-22 04:48:02 Nilesh

插入是否最佳？

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