将numpy数组放入Mysql db的最快和最有效的方法

Question

So I have a two numpy array. One of the arrays contain the object_ids for my database and all of these are ints and another contains the values I want to put to my database which are floats. Also my database is a mysql db.

what is the most efficient way to put all of this to my mysql db cause Im looking to optimize my code.

im also using MySQLdb and cursors to connect to my database.

Answer 1

You can use pandas as a clean interface between the two worlds. As an example :

import numpy as np
import pandas as pd

index = np.arange(10)
values = np.random.rand(10,2)
names= ['a','b']

df= pd.DataFrame(values,index,names)

In [217]: df
Out[217]: 
          a         b
0  0.259787  0.313253
1  0.449761  0.363243
2  0.916497  0.204994
3  0.168862  0.718966
4  0.248206  0.106945
5  0.709540  0.902679
6  0.413442  0.933243
7  0.568530  0.427908
8  0.926834  0.967445
9  0.175371  0.952798

You can then use df.to_sql which will tranfer you data in a SQL database.