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DBsDiff.py
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DBsDiff.py
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#!/usr/bin/python
#coding:utf-8
#pip install mysql-connector-python
import mysql.connector,time
#开发环境
config1 = {
'user': 'dbadmin',
'password': '123456',
'host': '127.0.0.1',
'port':3306,
#'database': '',
'charset': 'utf8',
#'pool_size': 32,
'pool_name': 'offlineserver1',
'pool_reset_session': False,
'connection_timeout': 120,
'use_pure': True
}
#正式环境
config2 = {
'user': 'dbadmin',
'password': '123456',
'host': '119.911.120.110',
'port':3306,
#'database': '',
'charset': 'utf8',
#'pool_size': 32,
'pool_name': 'offlineserver2',
'pool_reset_session': False,
'connection_timeout': 120,
'use_pure': True
}
DBname = '' #数据库名
showDBs = '''show databases;''' #列出所有库
#showTBs = '''select table_name from information_schema.tables where table_schema='\'%s\'';'''% DBname #l、列出所有表
testTBs = '''select table_name from information_schema.tables where table_schema='billsetcenter';'''
showViews = '''''' #列出所有视图
#showColumns = '''SELECT COLUMN_NAME FROM information_schema.COLUMNS WHERE TABLE_SCHEMA = \'%s\' AND TABLE_NAME = \'%s\';''' % (DBname,tbn)
def search(sql,config):
cnx = mysql.connector.connect(**config)
cursor = cnx.cursor(dictionary=True)
cursor.execute(sql)
result = cursor.fetchall()
cursor.close()
cnx.close()
time.sleep(0.5)
return result
db1 = search(showDBs,config1)
db2 = search(showDBs,config2)
#数据库1的所有库名
db1List = []
for i in range(0,len(db1)):
dbn = db1[i]['Database']
db1List.append(dbn)
#数据库2的所有库名
db2List = []
for i in range(0,len(db2)):
dbn = db2[i]['Database']
db2List.append(dbn)
'''
#排除系统表
try :
db1List.remove('information_schema')
db2List.remove('information_schema')
db1List.remove('sys')
db2List.remove('sys')
db1List.remove('performance_schema')
db2List.remove('performance_schema')
db1List.remove('recover_databases')
db2List.remove('recover_databases')
db1List.remove('mysql')
db2List.remove('mysql')
except Exception as e:
print(e)
'''
#获得两个库的差集
dbsDiff = set(db1List).difference(set(db2List))
print('===============================数据库比对=======================================')
print('差集')
if dbsDiff:
print(dbsDiff)
else:
pass
print('======================================================================')
#获得两个库的交集
dbs = set(db1List).intersection(set(db2List))
print('交集')
if dbs:
print(dbs)
else:
pass
print('===============================================================================')
dbs = list(dbs)
for i in range(0,len(dbs)):
DBname = dbs[i] #库名
print('++++++++++++++++++++++++++++++当前库名:%s++++++++++++++++++++++++++++++' % DBname)
showTBs = '''select table_name,table_type from information_schema.tables where table_schema=\'%s\';''' % DBname
tbs1 = search(showTBs,config1) #查询测试库的表
tbns1 = []
vns1 = []
#处理查询所有表的结果，处理成表名的列表
for p in range(0,len(tbs1)):
tbn = tbs1[p]['TABLE_NAME']
t_type = tbs1[p]['TABLE_TYPE']
if t_type == 'BASE TABLE':
tbns1.append(tbn) #测试库的表名列表
elif t_type == 'VIEW' or t_type == 'SYSTEM VIEW': # 区分视图
vns1.append(tbn)
else:
print(str(tbn) + '暂不支持的表类型或未知错误'+str(t_type))
tbs2 = search(showTBs,config2)
tbns2 = []
vns2 = []
for q in range(0,len(tbs2)):
tbn = tbs2[q]['TABLE_NAME']
t_type = tbs2[q]['TABLE_TYPE']
if t_type == 'BASE TABLE':
tbns2.append(tbn) #测试库的表名列表
elif t_type == 'VIEW' or t_type == 'SYSTEM VIEW': #区分视图
vns2.append(tbn)
else:
print(str(tbn) + '暂不支持的表类型或未知错误'+str(t_type))
#表名的差集
dbsDiff = set(tbns1).difference(set(tbns2))
viewDiff = set(vns1).difference(set(vns2))
if dbsDiff:
print('==============================库：%s差异的表:=========================' % DBname)
print(dbsDiff)
print('====================================================================')
elif viewDiff:
print('==============================库：%s差异的视图:=========================' % DBname)
print(viewDiff)
print('====================================================================')
else:
pass
# 获得两个库表名的交集，只对比共有表的列
setTables = list(set(tbns1).intersection(set(tbns2)))
setViews = list(set(vns1).intersection(set(vns2)))
#setTables = setTables + setViews #表和视图一起比较差异的列.视图会出现 is not BASE TABLE的错误。
#比对表中列的差异
for j in range(0,len(setTables)):
showColumns = '''SELECT COLUMN_NAME,COLUMN_COMMENT,COLUMN_TYPE FROM information_schema.COLUMNS WHERE TABLE_SCHEMA = \'%s\' AND TABLE_NAME = \'%s\';''' % (DBname,setTables[j])
#print(setTables[i])
columns1 = search(showColumns,config1)
colns1 = []
for k in range(0,len(columns1)):
coln = columns1[k]['COLUMN_NAME'] #字段名
colc = columns1[k]['COLUMN_COMMENT'] #字段备注
colt = columns1[k]['COLUMN_TYPE'] #字段类型
col_info = str(coln) + str(colt).replace('b\'',' ').replace('\'',' ')
colns1.append(coln) #不比对数据类型
#colns1.append(col_info) #比对数据类型
columns2 = search(showColumns,config2)
colns2 = []
colt = []
for m in range(0,len(columns2)):
coln = columns2[m]['COLUMN_NAME']
colc = columns2[m]['COLUMN_COMMENT']
colt = columns2[m]['COLUMN_TYPE']
col_info = str(coln) + str(colt).replace('b\'',' ').replace('\'',' ')
colns2.append(coln) #不比对数据类型
#colns2.append(col_info) #比对数据类型
setColns = list(set(colns1).difference(set(colns2))) #上面列属性经过编辑，此处比对可能有问题。需要确定检查。此处可直接对比列名和字段类型的差异
if setColns:
print('--------------------表：%s差异的列--------------------' % setTables[j])
for n in range(0,len(setColns)):
colAddr = 'alter table '+DBname+'.'+setTables[j]+' add '+setColns[n]+' '+str(colt).replace('b\'','').replace('\'',' ')+';'
print(colAddr)
else:
pass
#比对视图中列的差异。
print('--------------------有差异的视图：--------------------')
for n in range(0,len(setViews)):
viewDefinition = '''SELECT view_definition FROM information_schema.views WHERE TABLE_NAME = \'%s\';''' % setViews[n]
defSQL1 = search(viewDefinition,config1)
defSQL2 = search(viewDefinition,config2)
defSQL1 = str(defSQL1[0]['VIEW_DEFINITION'])
defSQL2 = str(defSQL2[0]['VIEW_DEFINITION'])
if defSQL1 != defSQL2:
#print(defSQL1)
print(DBname+'.'+setViews[n]) #只输出视图名。输出视图设计语句太乱
#print(defSQL2)
else:
pass