2

I am using the following code to copy data from a .csv file into a table:

csv file (comma separated) with header:

uid,name,val1,val2,file
SKU001,glasses,blue,metal,block_0
...

create table:

ih_sql = 'CREATE TABLE "sku_data" (uid VARCHAR, name VARCHAR, val1 VARCHAR, val2 VARCHAR, file VARCHAR, PRIMARY KEY (uid));'
engine.execute(ih_sql)
#<sqlalchemy.engine.result.ResultProxy at 0x7fee9b8ff550>

copy data:

ih_file = os.path.abspath(f'{PATH}data.csv')
copy_sql = f"COPY sku_data FROM '{ih_file}' WITH CSV HEADER DELIMITER ','"
engine.execute(copy_sql)
#<sqlalchemy.engine.result.ResultProxy at 0x7fee9b8ff710>

However the resultant table is empty, zero rows were created. How can I work out why no data was copied from the csv file?

Improve this question
2

1 Answer 1

Reset to default
2

You have to explicitly commit the transaction, e.g.:

copy_sql = f"COPY sku_data FROM '{ih_file}' WITH CSV HEADER DELIMITER ','"
connection = engine.connect()
with connection.begin():
    connection.execute(copy_sql)

Read more on Understanding Autocommit.

Improve this answer
Sign up to request clarification or add additional context in comments.

Comments

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Start asking to get answers

Find the answer to your question by asking.

Ask question

Explore related questions

See similar questions with these tags.