我通过Python连接到Influxdb并读取数据库 . 我只使用client.query（query）从我的数据库中获取数据 . 然而，在我获得数据后，它将从Influxdb中删除 . 有谁知道为什么我在Influxdb数据库中丢失了我的数据？代码如下

import time
import datetime
from influxdb import InfluxDBClient
import numpy as np
start_time = time.time()
host='localhost'
port=8086
user = ''
password = ''
dbname = 'db'


client = InfluxDBClient(host, port, user, password, dbname)


 query4 = 'select * from rawData ORDER BY time ASC limit 1 ;'
result4 = client.query(query4)
InitialDate = result4.raw['series'][0]['values'][0][0][0:10]
FinalDate=datetime.datetime.strptime(InitialDate, "%Y-%m-       %d")+datetime.timedelta(days=7)
query = 'select count(*) from rawData'
result = client.query(query)
length=result.raw['series'][0]['values'][0][1]
count=0
List = set()
FinalData = {}
while(count*1000000<length):
query2 = 'select * from rawData limit 1000000 '+'offset '+   str(count*1000000)
result2 = client.query(query2)
count=count+1

if ("series" not in result2.raw.keys()):
    continue
temp = result2.raw['series'][0]['values']
print(len(temp))
Data = [temp[i] for i in range(len(temp))
        if (temp[i][4] != '0' and temp[i][0]<=str(FinalDate))]

for i in range(len(Data)):
    List.add(Data[i][3] + ' ' + Data[i][4])
for i in range(len(Data)):
    if (Data[i][3] + ' ' + Data[i][4]) in FinalData.keys():
        if Data[i][1] in FinalData[Data[i][3] + ' ' + Data[i][4]].keys():
            FinalData[Data[i][3] + ' ' + Data[i][4]][Data[i]   [1]].append((Data[i][0], Data[i][2]))
        else:
            FinalData[Data[i][3] + ' ' + Data[i][4]].update({Data[i][1]: [(Data[i][0], Data[i][2])]})

    else:
        FinalData[Data[i][3] + ' ' + Data[i][4]] = {Data[i][1]: [(Data[i][0], Data[i][2])]}
np.save('my_file2.npy', FinalData)
python influxdb