“extra data after last expected column” while trying to import a csv file into postgresql

问题

I try to copy the content of a CSV file into my postgresql db and I get this error "extra data after last expected column".

The content of my CSV is

    agency_id,agency_name,agency_url,agency_timezone,agency_lang,agency_phone
100,RATP (100),http://www.ratp.fr/,CET,,

and my postgresql command is

COPY agency (agency_name, agency_url, agency_timezone) FROM 'myFile.txt' CSV HEADER DELIMITER ',';

Here is my table

CREATE TABLE agency (
    agency_id character varying,
    agency_name character varying NOT NULL,
    agency_url character varying NOT NULL,
    agency_timezone character varying NOT NULL,
    agency_lang character varying,
    agency_phone character varying,
    agency_fare_url character varying
);

     Column      |       Type        | Modifiers 
-----------------+-------------------+-----------
 agency_id       | character varying | 
 agency_name     | character varying | not null
 agency_url      | character varying | not null
 agency_timezone | character varying | not null
 agency_lang     | character varying | 
 agency_phone    | character varying | 
 agency_fare_url | character varying | 

回答1:

Now you have 7 fields.

You need to map those 6 fields from the CSV into 6 fields into the table.

You cannot map only 3 fields from csv when you have it 6 like you do in:

\COPY agency (agency_name, agency_url, agency_timezone) FROM 'myFile.txt' CSV HEADER DELIMITER ',';

All fields from the csv file need to to be mapped in the copy from command.

And since you defined csv , delimiter is default, you don't need to put it.

回答2:

Not sure this counts as an answer, but I just hit this with a bunch of CSV files, and found that simply opening them in Excel and re-saving them with no changes made the error go away. IOTW there is possibly some incorrect formatting in the source file that Excel is able to clean up automatically.

回答3:

I tried your example and it works fine but ....

your command from the psql command line is missing \

database=#  \COPY agency FROM 'myFile.txt' CSV HEADER DELIMITER ',';

And next time please include DDL

I created DDL from the csv headers

来源：https://stackoverflow.com/questions/26701735/extra-data-after-last-expected-column-while-trying-to-import-a-csv-file-into-p