python按月分表
阿新 • • 發佈:2018-05-23
python mysql 分表 #!/usr/bin/env python
-coding:utf-8-
import time
from datetime import datetime
import calendar
import MySQLdb
import sys
class GetDayMonth(object):
def getLastDayOfLastMonth(self,step): d = datetime.now() year = d.year month = d.month if month == 1: month = 12 year -= 1 else: month -= step days = calendar.monthrange(year, month)[1] return datetime(year, month, days).strftime(‘%Y-%m-%d‘) def getFirstDayOfLastMonth(self,step): d = datetime.now() year = d.year month = d.month if month == 1: month = 12 year -= 1 else: month -= step return datetime(year, month, 1).strftime(‘%Y-%m-%d‘) def getLastMonth(self,step): d = datetime.now() year = d.year month = d.month if month == 1: month = 12 year -= 1 else: month -= step return datetime(year, month, 1).strftime(‘%Y%m‘)
class MysqlExe(object):
def init(self,host,port,user,passwd,db,charset=‘utf8‘):
try:
self.conn = MySQLdb.connect(host,user,passwd,db,int(port))
except MySQLdb.Error as e:
errormsg = ‘Cannot connect to server\nERROR(%s):%s‘ % (e.args[0],e.args[1])
print errormsg
exit(2)
self.cursor = self.conn.cursor()
def Creat_table(self,sql): try: self.cursor.execute(sql) self.conn.commit() except: self.conn.rollback() print "sql execute error" exit(2) def __del__(self): self.conn.close() self.cursor.close()
if name == ‘main‘:
d = GetDayMonth() table_name = sys.argv[1] first_day_month = d.getFirstDayOfLastMonth(1) last_day_month = d.getLastDayOfLastMonth(1) last_3day_month = d.getLastDayOfLastMonth(3) last_month = d.getLastMonth(1) mysql_exec = MysqlExe(‘127.0.0.1‘,3306,‘root‘,‘XXXX‘,‘guanba_data‘) sql_create = "create table guanba_data.%s_%s like guanba_data.%s"%(table_name,last_month,table_name) sql_insert = "insert into guanba_data.%s_%s select * from guanba_data.%s where create_time >= unix_timestamp(‘%s 00:00:00‘) and create_time <= unix_timestamp(‘%s 23:59:59‘)"%(table_name,last_month,table_name,first_day_month,last_day_month) sql_del = "delete from guanba_data.%s where create_time <= unix_timestamp(‘%s 23:59:59‘)"%(table_name,last_3day_month) mysql_exec.Creat_table(sql_create) mysql_exec.Creat_table(sql_insert) mysql_exec.Creat_table(sql_del)
python按月分表