Python SQLserver数据库操作

SQL Server

SQL Server是由Microsoft开发和推广的关系数据库管理系统.

SQL Server特点

1. C/S体系结构
2. 具有很好的伸缩性
3. 提供数据仓库功能
4. 支持OLE DB和多种查询

代码实现SQL server创建、插入、查询、删除操作

需要pymssql库支持

import pymssql
import time
import traceback, sys


class database(object):
    """数据库操作对象"""

    def __init__(self, url,username,password,databaseName):
        self.url = url
        self.username = username
        self.password = password
        self.databaseName = databaseName
        self.connect = self.sql_server_conn()
        self.cursor = self.connect.cursor()
        
    def sql_server_conn(self):
        connect = pymssql.connect(self.url,self.username,self.password,self.databaseName) #服务器名,账户,密码,数据库名
        if connect:
            print(u"Success!!")
        return connect

    #查看表的所有字段，
    #@table_name :表名
    def get_column_name(self,table_name):
        self.cursor.execute("select top 1 * from " + table_name)   #执行sql语句
        data_dict=[]
        for field in self.cursor.description:
            data_dict.append(field[0])
        print(data_dict)
        return data_dict

    #得到数据库所有的表名
    def get_table_name(self):
        sql = "SELECT NAME FROM SYSOBJECTS WHERE XTYPE='U' ORDER BY NAME"
        self.cursor.execute(sql)  # 返回执行成功的结果条数
        rows = self.cursor.fetchall()
        for d in rows:
            for k in d:
                print(k)
                

    #执行sql语句，增删改查
    #@sql:sql语句
    def execute_sql(self,sql):
        sql = sql.lower()
        if 'insert' in sql or 'delete' in sql or  'update' in sql:
            self.cursor.execute(sql)
            self.connect.commit()
            return 
        elif 'select' in sql :
            self.cursor.execute(sql)
            rows = self.cursor.fetchall()
            for k  in rows:
                print(k) 
            return rows

    #关闭游标，连接
    def close(self):
        self.cursor.close()   #关闭游标
        self.connect.close()