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# -*-coding:utf-8-*-
import pyodbc
# 連接數(shù)據(jù)庫(kù)（不需要配置數(shù)據(jù)源）,connect()函數(shù)創(chuàng)建并返回一個(gè) Connection 對(duì)象
cnxn = pyodbc.connect(r'DRIVER={Microsoft Access Driver (*.mdb, *.accdb)};DBQ=.\data\goods.mdb')
# cursor()使用該連接創(chuàng)建（并返回）一個(gè)游標(biāo)或類(lèi)游標(biāo)的對(duì)象
crsr = cnxn.cursor()
# 打印數(shù)據(jù)庫(kù)goods.mdb中的所有表的表名
print('`````````````` goods ``````````````')
for table_info in crsr.tables(tableType='TABLE'):
    print(table_info.table_name)
l = crsr.execute("SELECT * from goods WHERE goodsId='0001'")# [('0001', '扇葉', 20, 'A公司', 'B公司', 2000, 2009)]
rows = crsr.execute("SELECT currentStock from goods")  # 返回的是一個(gè)元組
for item in rows:
    print(item)
l = crsr.execute("UPDATE users SET username='lind' WHERE password='123456'")
print(crsr.rowcount)  # 想知道數(shù)據(jù)修改和刪除時(shí)，到底影響了多少條記錄，這個(gè)時(shí)候你可以使用cursor.rowcount的返回值。
# 修改數(shù)據(jù)庫(kù)中int類(lèi)型的值
value = 10
SQL = "UPDATE goods " \
      "SET lowestStock=" + str(value) + " " \
      "WHERE goodsId='0005'"
# 刪除表users
crsr.execute("DROP TABLE users")
# 創(chuàng)建新表 users
crsr.execute('CREATE TABLE users (login VARCHAR(8),userid INT, projid INT)')
# 給表中插入新數(shù)據(jù)
crsr.execute("INSERT INTO users VALUES('Linda',211,151)")
''''''
# 更新數(shù)據(jù)
crsr.execute("UPDATE users SET projid=1 WHERE userid=211")
# 刪除行數(shù)據(jù)
crsr.execute("DELETE FROM goods WHERE goodNum='0001'")
# 打印查詢(xún)的結(jié)果
for row in crsr.execute("SELECT * from users"):
    print(row)
# 提交數(shù)據(jù)（只有提交之后，所有的操作才會(huì)對(duì)實(shí)際的物理表格產(chǎn)生影響）
crsr.commit()
crsr.close()
cnxn.close()