Internal Error on trying copy data to postgres table from python code using copy_from function of psycopg2

Question

I did this in my python code, based on the documentation here and it's mention here

# anything can be used as a file if it has .read() and .readline() methods
data = StringIO.StringIO()
data.write('\n'.join(['Tom\tJenkins\t37',
                  'Madonna\t\N\t45',
                  'Federico\tDi Gregorio\t\N']))
data.seek(0)

curs.copy_from(data, 'distributors')

I got this error: Traceback (most recent call last): File "", line 1, in cursor.copy_from(data, 'distributors') InternalError: current transaction is aborted, commands ignored until end of transaction block

user3422637 · Accepted Answer · 2014-10-23 23:23:00Z

3

Found the answer here:

There was an attempted query run of an erroneous query using the same database connection. (For details: I had run a copy_from execution on this db connection with incorrect data. It had failed. And, then I modified my data to be in correct format)

When your previous query/command on the database using this connection had a problem/error, it needs to be rolled back using connection.rollback() call. Once, you execute that code, and re-run the fresh correct code, you would get data to be properly copied from Python code to Postgres database.

answered Oct 23, 2014 at 23:23

user3422637

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1 Comment

srodriguex Over a year ago

I did a con.commit() after each statement and worked like a charm.

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