RE: ERROR when inserting csv values into sql table - Mailing list pgsql-novice

Hi guys,

Have edited the code, but Im still getting an error. I have already edited my apostrophes and spacing and looked up examples from google to try and resolve my error to no avail. I also ensured that i defined DATABASE_URL properly. Sorry for the long traceback error at the end :P Please note that my csv values are stored in lists in each cell. They are arranged in a single column such as

The Lego Movie;2014;100;tt1490017;7.8

This is my main code

import csv

import sys

import os

from sqlalchemy import Column, ForeignKey, Integer, String

from sqlalchemy import create_engine

from flask import Flask, render_template, request, session

from flask_sqlalchemy import SQLAlchemy

from flask_session import Session

engine = create_engine(os.getenv("DATABASE_URL")) # database engine object from SQLAlchemy that manages connections to the database,# DATABASE_URL is an environment variable that indicates where the database lives

def main():

    f = open("movies.csv","r")

    reader = csv.reader(f)

    for row in f: # loop gives each column a name

        vals = row.split(';')

        title = vals[0]

        year = vals[1]

        runtime = vals[2]

        imdbID = vals[3]

        imdbRating = vals[4]

        engine.execute('INSERT INTO movies("title","year","runtime","imdbID","imdbRating") VALUES ((title), (year), (runtime), (imdbID), (imdbRating))',

        {"title": title, "year": year, "runtime": runtime, "imdbID": imdbID, "imdbRating": imdbRating })

    engine.commit() # transactions are assumed, so close the transaction finished

if __name__ == "__main__":

    main()

SQL code:

CREATE TABLE movies (

      "title" SERIAL PRIMARY KEY,

      "year" INTEGER NOT NULL,

      "runtime" INTEGER NOT NULL,

      "imdbID" VARCHAR NOT NULL,

      "imdbRating" INTEGER NOT NULL

  );

New error code:

#############################

Traceback (most recent call last):

  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-

packages/sqlalchemy/engine/base.py", line 1244, in _execute_context

    cursor, statement, parameters, context

  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-

packages/sqlalchemy/engine/default.py", line 550, in do_execute

    cursor.execute(statement, parameters)

psycopg2.errors.UndefinedColumn: column "title" does not exist

LINE 1: ...,"year","runtime","imdbID","imdbRating") VALUES ((title), (y...

                                                             ^

HINT:  There is a column named "title" in table "movies", but it cannot be re

ferenced from this part of the query.

The above exception was the direct cause of the following exception:

Traceback (most recent call last):

  File "import.py", line 26, in <module>

    main()

  File "import.py", line 23, in main

    {"title": title, "year": year, "runtime": runtime, "imdbID": imdbID, "imd

bRating": imdbRating })

  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-

packages/sqlalchemy/engine/base.py", line 2166, in execute

    return connection.execute(statement, *multiparams, **params)

  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-

packages/sqlalchemy/engine/base.py", line 982, in execute

    return self._execute_text(object_, multiparams, params)

  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-

packages/sqlalchemy/engine/base.py", line 1155, in _execute_text

    parameters,

File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-

packages/sqlalchemy/engine/base.py", line 1248, in _execute_context

    e, statement, parameters, cursor, context

  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-

packages/sqlalchemy/engine/base.py", line 1466, in _handle_dbapi_exception

    util.raise_from_cause(sqlalchemy_exception, exc_info)

  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-

packages/sqlalchemy/util/compat.py", line 383, in raise_from_cause

    reraise(type(exception), exception, tb=exc_tb, cause=cause)

  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-

packages/sqlalchemy/util/compat.py", line 128, in reraise

    raise value.with_traceback(tb)

  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-

packages/sqlalchemy/engine/base.py", line 1244, in _execute_context

    cursor, statement, parameters, context

File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-

packages/sqlalchemy/engine/default.py", line 550, in do_execute

    cursor.execute(statement, parameters)

sqlalchemy.exc.ProgrammingError: (psycopg2.errors.UndefinedColumn) column "ti

tle" does not exist

LINE 1: ...,"year","runtime","imdbID","imdbRating") VALUES ((title), (y...

                                                             ^

HINT:  There is a column named "title" in table "movies", but it cannot be re

ferenced from this part of the query.

[SQL: INSERT INTO movies("title","year","runtime","imdbID","imdbRating") VALU

ES ((title), (year), (runtime), (imdbID), (imdbRating))]

[parameters: {'title': 'Title', 'year': 'Year', 'runtime': 'Runtime', 'imdbID

': 'imdbID', 'imdbRating': 'imdbRating\n'}]

(Background on this error at: http://sqlalche.me/e/f405)

Here’s a pic of the new table:

Thanks,

Cravan