Export PostgreSQL table to csv with header for some columns

suggest change

COPY products(is_public, title, discount) TO 'D:\csv_backup\products_db.csv' DELIMITER ',' CSV HEADER;    

COPY categories(name) TO 'D:\csv_backup\categories_db.csv' DELIMITER ',' CSV HEADER;

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Export to csv:

*Export PostgreSQL database table header and data to CSV file

*Export PostgreSQL table to csv with header for some columns

*Full table backup to csv with header

*copy from query