Question

I want to copy table from postgis database to the PC hard drive (format can be .txt .xls .csv or whatever).
How it can be done?

Answer 1

Use the SQL COPY command to write to the file system of the database server.

COPY tbl TO '/path/to/file/tbl.sql';

There are lots of options to adapt the output format.

Have a look at the \copy meta-command of psql if you need to copy from a remote server to the local disk.