python如何操作oracle数据库_python操作oracle数据库

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# -*- mode: python; coding: utf-8 -*-

# python operate oracle,contain insert、delete、update、select.

# @author liyulin

# @date 2014-11-07

import cx_Oracle

class PythonOralceUtil:

def __enter__(self):

self.conn = cx_Oracle.connect('testuser/[email protected]/CHROMEBOOK')

self.cursor = self.conn.cursor()

return self

def __exit__(self,type,value,traceback):

self.cursor.close()

self.conn.close()

############################################

# 查询reg_codes中的所有数据

############################################

def queryAll(self):

self.cursor.execute('select * from reg_codes')

results = self.cursor.fetchall()

for result in results:

print result

############################################

# 根据序号查询reg_codes中的一条数据

############################################

def queryBySeq(self,seq):

self.cursor.execute('select * from reg_codes where seq=:1',seq)

result = self.cursor.fetchone()

if (result is not None):

for index in range(0,6):

print result[index],############################################

# 向reg_codes中插入N条数据

############################################

def insertManay(self,insertValue):

self.conn.begin()

try:

self.cursor.executemany('insert into reg_codes(device,unique_code,group_code,input_file,sn,input_ts) values(:1,:2,:3,:4,:5,sysdate)',insertValue)

except AssertionError:

self.conn.rollback()

raise Warning,"invalid insertValue (%s)" % insertValue

self.conn.commit()

############################################

# 更新reg_codes中一条数据

############################################

def updateOne(self,sqe,input_file):

updateValue = [input_file,sqe]

self.cursor.execute('update reg_codes set input_file=:1 where seq=:2',updateValue)

############################################

# 更新reg_codes中N条数据

############################################

def updateManay(self,updateValues):

self.conn.begin()

try:

self.cursor.executemany('update reg_codes set input_file=:1 where seq=:2',updateValues)

except AssertionError:

self.conn.rollback()

raise Warning,"invalid insertValue (%s)" % updateValues

self.conn.commit()

############################################

# 删除reg_codes中一条数据

############################################

def delete(self,sqe):

self.cursor.execute('delete from reg_codes where seq=:1',sqe)

############################################

# 删除reg_codes中N条数据

############################################

def deleteManay(self,seqs):

self.conn.begin()

try:

self.cursor.executemany('delete from reg_codes where seq=:1',seqs)

except AssertionError:

self.conn.rollback()

raise Warning,"invalid seqs (%s)" % seqs

self.conn.commit()

############################################

# 执行代码

############################################

with PythonOralceUtil() as pythonOralceUtil:

# insertValue = [['jerry','unique_code2333','group_code2333','debug233','1111111111122'],# ['jerry','unique_code244','group_code244','debug244','22222222233'],'unique_code255','group_code255','debug255','33333333344'],'unique_code266','group_code266','debug266','44444444455'],'unique_code277','group_code277','debug277','55555555566']]

# pythonOralceUtil.insertManay(insertValue)

# pythonOralceUtil.updateOne('27','debug_updated')

# pythonOralceUtil.delete([27])

# pythonOralceUtil.deleteManay([[31],[44],[45]])

updateValues = [['debug_updated','46'],['debug_updated','47'],'48'],'34']]

pythonOralceUtil.updateManay(updateValues)

pythonOralceUtil.queryAll()

pythonOralceUtil.queryBySeq([27])

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