Postgres CSV COPY from/import is not respecting CSV headers

Here's a single line example for importing users using the header row of a csv:

echo "\copy users ($(head -1 users.csv)) FROM 'users.csv' DELIMITER ',' CSV HEADER" | psql

Or with gzip:

echo "\copy users ($(gzip -dc users.csv.gz | head -1)) FROM PROGRAM 'gzip -dc users.csv.gz' DELIMITER ',' CSV HEADER" | psql

The COPY command by default copies columns from a CSV file in the default order of the columns in the table. The HEADER option on input is ignored, it basically only informs the backend to ignore the first line on input. If the order of the columns in the CSV does not match the order of the columns in the table, you can explicitly specify the column order to match the layout of the CSV file:

COPY churches (id,denomination_id,name,address_id)
FROM '$PWD/data/Data - Churches.csv'
WITH DELIMITER ',' CSV HEADER;