1. 说明
SQL Server是由Microsoft开发和推广的关系数据库管理系统。本文介绍在linux系统下，SQL Server的基本命令。
2. SQLServer基本命令
> sqlcmd -S localhost -U SA -P 密码 # 用命令行连接
(1) 建库
> create database testme
> go
(2) 看当前数据库列表
> select * from SysDatabases
> go
(3) 看当前数据表
> use 库名
> select * from sysobjects where xtype='u'
> go
(4) 看表的内容
> select * from 表名;
> go
3. Python程序访问SQLServer数据库
图片
import pymssql
server = 'localhost'
user = 'sa'
password = 密码
database = 'ecology'
conn = pymssql.connect(server, user, password, database)
cursor = conn.cursor()
cursor.execute("""
IF OBJECT_ID('persons', 'U') IS NOT NULL
DROP TABLE persons
CREATE TABLE persons (
id INT NOT NULL,
name VARCHAR(100),
salesrep VARCHAR(100),
PRIMARY KEY(id)
)
""")
cursor.executemany(
"INSERT INTO persons VALUES (%d, %s, %s)",
[(1, 'John Smith', 'John Doe'),
(2, 'Jane Doe', 'Joe Dog'),
(3, 'Mike T.', 'Sarah H.')])
conn.commit()
cursor.execute('SELECT * FROM persons WHERE salesrep=%s', 'John Doe')
row = cursor.fetchone()
while row:
print("ID=%d, Name=%s" % (row[0], row[1]))
row = cursor.fetchone()
conn.close()
