Fujii Masao 0e1275fb07 Avoid using ambiguous word "non-negative" in error messages.
The error messages using the word "non-negative" are confusing
because it's ambiguous about whether it accepts zero or not.
This commit improves those error messages by replacing it with
less ambiguous word like "greater than zero" or
"greater than or equal to zero".

Also this commit added the note about the word "non-negative" to
the error message style guide, to help writing the new error messages.

When postgres_fdw option fetch_size was set to zero, previously
the error message "fetch_size requires a non-negative integer value"
was reported. This error message was outright buggy. Therefore
back-patch to all supported versions where such buggy error message
could be thrown.

Reported-by: Hou Zhijie
Author: Bharath Rupireddy
Reviewed-by: Kyotaro Horiguchi, Fujii Masao
Discussion: https://postgr.es/m/OS0PR01MB5716415335A06B489F1B3A8194569@OS0PR01MB5716.jpnprd01.prod.outlook.com
2021-07-28 01:20:16 +09:00
..
2021-01-02 13:06:25 -05:00
2021-01-02 13:06:25 -05:00
2021-01-02 13:06:25 -05:00
2021-01-02 13:06:25 -05:00
2021-01-02 13:06:25 -05:00
2021-01-02 13:06:25 -05:00
2021-01-02 13:06:25 -05:00
2021-01-02 13:06:25 -05:00
2021-01-02 13:06:25 -05:00
2021-01-02 13:06:25 -05:00
2021-04-08 08:28:03 +02:00

The PostgreSQL contrib tree
---------------------------

This subtree contains porting tools, analysis utilities, and plug-in
features that are not part of the core PostgreSQL system, mainly
because they address a limited audience or are too experimental to be
part of the main source tree.  This does not preclude their
usefulness.

User documentation for each module appears in the main SGML
documentation.

When building from the source distribution, these modules are not
built automatically, unless you build the "world" target.  You can
also build and install them all by running "make all" and "make
install" in this directory; or to build and install just one selected
module, do the same in that module's subdirectory.

Some directories supply new user-defined functions, operators, or
types.  To make use of one of these modules, after you have installed
the code you need to register the new SQL objects in the database
system by executing a CREATE EXTENSION command.  In a fresh database,
you can simply do

    CREATE EXTENSION module_name;

See the PostgreSQL documentation for more information about this
procedure.