使用Python将CSV数据导入PostgreSQL [英] CSV data into postgreSQL using Python

问题描述

我正在尝试使用Python将CSV数据导入到postgreSQL中。我试图在Stack Overflow上搜索此问题，但找不到适合我的情况的结果。我的CSV文件中有空列，运行代码时，它会为没有信息的空白列抛出错误。我希望能够告诉Python忽略空白列，然后继续进行下一列。并非所有列中都有数据，因此，我希望您能提供帮助，以实现一个解决方案，我可以在脚本中针对其中没有数据的列进行编辑。我是编程的新手，请原谅我的愚蠢。

I am trying to import CSV data into postgreSQL using Python. I tried to search on Stack Overflow for this issue but couldn't find anything fruition for my situation. I have empty columns in my CSV file, when I run the code it throws out an error for the blank column for which there's no information. I want to be able to tell Python to ignore the blank column and continue to the next column. Not all of the columns have data in them so I want your kind assistance to implement a solution which I can have edited in the script for the columns which have no data in them. I am new to Programming so please pardon my stupidity.

import psycopg2
import csv

csv_data = csv.reader(file('SampleData1.csv'))

database = psycopg2.connect (database = "**", user="**", password="***", host="**", port="**")

cursor = database.cursor()
delete = """Drop table if exists "Real".SampleDataOne"""
print (delete)

mydata = cursor.execute(delete)

cursor.execute("""Create Table "Real".SampleDataOne
              (Username varchar(55),
              TimeStamp timestamp,
              Week date,
              Actual_Sale_Date date,
              Estimated_Closing_Date date, 
              Last_Name_First_Name varchar(55),
               Ages varchar(55)
               );""")

print "Table created successfully" 

next(csv_data)
for row in csv_data:

cursor.execute("""Insert into "Real".SampleDataOne(Username,TimeStamp,  Week,   Actual_Sale_Date, Estimated_Closing_Date, \
               Last_Name_First_Name,   Ages)"""\
               """VALUES (%s,%s,%s,%s,%s,%s,%s)""",
               row)

cursor.close()
database.commit()
database.close()

print "CSV imported"

错误如下：'后的列旁有一个向上的点（^）。假'。

The error is as follows: It has a point upwards (^) next to the column after the 'False'.

Drop table if exists "Real".SampleDataOne
Table created successfully

Traceback (most recent call last):
File "C:/Users/Desktop/Programming/SampleData1Python.py", line 61,   in <module>
row)
DataError: invalid input syntax for type date: ""
LINE 1: ...****@jcp.com','****@comcast.net','No','FALSE','','','')

推荐答案

http://initd.org/psycopg/docs /cursor.html#cursor.copy_from

f = open('SampleData1.csv')
cursor.copy_from(f, '"Real".sampledataone', sep=',', null='')

如果您具有简单的csv数据，但不使用引号或逗号，则应该可以工作。

Should work provided you have simple csv data without quoting or commas in the data.

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