Write Pandas DataFrame in to MySQL database

Question

I'm trying to write a pandas dataframe to MySQL database with following code.

import pandas as pd
import numpy as np
from pandas.io import sql
import MySQLdb

df = pd.DataFrame([[1.1, 1.1, 1.1, 2.6, 2.5, 3.4,2.6,2.6,3.4,3.4,2.6,1.1,1.1,3.3], list('AAABBBBABCBDDD'), [1.1, 1.7, 2.5, 2.6, 3.3, 3.8,4.0,4.2,4.3,4.5,4.6,4.7,4.7,4.8]]).T

db = MySQLdb.connect("192.168.56.101","nilani","123","test")
cursor = db.cursor()

cursor.execute("DROP TABLE IF EXISTS TEST")

sql = """CREATE TABLE TEST (
         ID  INT NOT NULL,
         COL1 CHAR(20),
         COL2 CHAR(20),  
         COL3 CHAR(20))"""

cursor.execute(sql)

sql.write_frame(df, con=db, name='TEST', flavor='mysql')

db.close()

I have been referring this question and the other resources. Any way I get following error. What will be the reason?

sql.write_frame(df, con=db, name='TEST', flavor='mysql')
AttributeError: 'str' object has no attribute 'write_frame'

joris · Accepted Answer · 2013-07-23 10:26:11Z

7

You have overwritten the from pandas.io import sql with sql = """..., so sql is now a string and no longer a pandas module which holds the write_frame function.

EDIT: the AttributeError: 'numpy.int64' object has no attribute 'replace' error you get is due to the fact that you use integer column labels (this is a bug). Try setting the columns labels to something else, eg:

df.columns = ['COL1', 'COL2', 'COL3']

edited Jul 23, 2013 at 10:26

answered Jul 23, 2013 at 9:45

joris

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6 Comments

Nilani Algiriyage Over a year ago

Ok, So what I have to do now?

Nilani Algiriyage Over a year ago

I tried this after removing the table creation code...sql.write_frame(df, con=db, name='TEST', if_exists='replace', flavor='mysql'), It says : AttributeError: 'numpy.int64' object has no attribute 'replace'

joris Over a year ago

Note, there seems to be a bug with the 'replace' option (see eg github.com/pydata/pandas/issues/2971). Does it run without if_exists='replace'?

joris Over a year ago

And to answer what to do: just rename the table creation code to something else than sql, and execuste this with cursor.execute(other_name)

Nilani Algiriyage Over a year ago

Without replace it generates this error..ValueError: Table 'NEW' already exists. With replace gives the above error. I followed what you said, now the problem is with this replace thing.:(

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