首先需要安装pymssql模块（http://linuxshow.blog.51cto.com/1572053/1407255）
配置下freetds
#cat /usr/local/freetds/etc/freetds.conf
| # $Id: freetds.conf,v 1.12 2007/12/25 06:02:36 jklowden Exp $ # # This file is installed by FreeTDS if no file by the same # name is found in the installation directory. # # For information about the layout of this file and its settings, # see the freetds.conf manpage "man freetds.conf". # Global settings are overridden by those in a database # server specific section [global] # TDS protocol version ;tds version = 4.2 # Whether to write a TDSDUMP file for diagnostic purposes # (setting this to /tmp is insecure on a multi-user system) ;dump file = /tmp/freetds.log ;debug flags = 0xffff # Command and connection timeouts ;timeout = 10 ;connect timeout = 10 # If you get out-of-memory errors, it may mean that your client # is trying to allocate a huge buffer for a TEXT field. # Try setting 'text size' to a more reasonable limit text size = 64512 # A typical Sybase server#newadd [test_db] host = 127.0.0.1 port = 1433 tds version = 8.0 client charset = GBK |
连接SQL服务器的代码
import sys
import pymssql
class Mssql:
def __init__(self, config):
self.cf = config
def __Connect(self):
try:
self.conn = pymssql.connect(host=self.cf['host'],user=self.cf['user'],password=self.cf['pwd'],database=self.cf['db'])
cur = self.conn.cursor()
except Exception, err:
print "Error decoding config file: %s" % str(err)
sys.exit(1)
return cur
def select(self, sql):
try:
cur = self.__Connect()
cur.execute(sql)
rows = cur.fetchall()
cur.close()
self.conn.close()
return rows
except Exception, err:
print "Error decoding config file: %s" % str(err)
sys.exit(1)
def insert(self, sql):
try:
cur = self.__Connect()
cur.execute(sql)
cur.close()
self.conn.commit()
self.conn.close()
except Exception, err:
print "Error decoding config file: %s" % str(err)
sys.exit(1)
def main():
config = {'host':'test_db','user':'test','pwd':'123456','db':'Testdb'}
mssql = Mssql(config)
#select sql
sql = "select * from test_table"
rows = mssql.select(sql)
#insert sql
sql = "insert into test_table values('1','2','3')"
mssql.insert(sql)
if __name__ == "__main__":
main()注：host里test_db是调用freetds配置里的，可以直接写ip
下面是pymssql里参数使用说明，如下：
1. pymssqlCnx类（用于连接Mssql数据库）
pymssql.connect()来初始化连接类，它允许如下的参数。
| dsn：连接字符串，主要用于与之前版本的pymssql兼容 user：用户名 password：密码 trusted：布尔值,指定是否使用windows身份认证登陆 host :主机名 database：数据库 timeout：查询超时 login_timeout：登陆超时 charset：数据库的字符集 as_dict：布尔值,指定返回值是字典还是元组 max_conn：最大连接数 |
2. Method
| autocommit(status) 布尔值,指示是否自动提交事务，默认的状态是关闭的，如果打开，你必须调用commit()方法来提交事务。 关闭连接 cursor() 返回游标对象，用于查询和返回数据 commit() 提交事务。 回滚事务 pymssqlCursor类 用于从数据库查询和返回数据 rowcount 返回最后操作影响的行数。 返回创建游标的连接对象 返回插入的最后一行 rownumber 返回当前数据集中的游标（通过索引） |
3. 游标方法
| close() 关闭游标 execute(operation) 执行操作 执行操作，可以提供参数进行相应操作 executemany(operation, params_seq) 执行操作，Params_seq为元组 fetchone()
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