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The setting controls tha maximum length of the header line in expanded format output. Possible settings are full, column, page, or an integer. the default is full, the current behaviour, and in this case the header line is the length of the widest line of output. column causes the header to be truncated to the width of the first column, page causes it to be truncated to the width of the terminal page, and an integer causes it to be truncated to that value. If the full value is less than the page or integer value no truncation occurs. If given without an argument this option prints its current setting. Platon Pronko, somewhat modified by me. Discussion: https://postgr.es/m/f03d38a3-db96-a56e-d1bc-dbbc80bbde4d@gmail.com
PostgreSQL Database Management System ===================================== This directory contains the source code distribution of the PostgreSQL database management system. PostgreSQL is an advanced object-relational database management system that supports an extended subset of the SQL standard, including transactions, foreign keys, subqueries, triggers, user-defined types and functions. This distribution also contains C language bindings. PostgreSQL has many language interfaces, many of which are listed here: https://www.postgresql.org/download/ See the file INSTALL for instructions on how to build and install PostgreSQL. That file also lists supported operating systems and hardware platforms and contains information regarding any other software packages that are required to build or run the PostgreSQL system. Copyright and license information can be found in the file COPYRIGHT. A comprehensive documentation set is included in this distribution; it can be read as described in the installation instructions. The latest version of this software may be obtained at https://www.postgresql.org/download/. For more information look at our web site located at https://www.postgresql.org/.