/usr/share/pgmodeler/schemas/alter/diff.sch is in pgmodeler-common 0.9.1~beta-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 | # Basic structure for the diff script file generated by diff process
# PostgreSQL Version: 9.x
# CAUTION: Do not modify this file unless you know what you are doing.
#          Code generation can be broken if incorrect changes are made.
%if {has-changes} %then
  [-- Diff code generated with pgModeler (PostgreSQL Database Modeler)] $br
  [-- pgModeler version: ] {pgmodeler-ver} $br
  [-- Diff date: ] {date} $br
  [-- Source model: ] {dbmodel} $br
  [-- Database: ] {database} $br
  [-- PostgreSQL version: ] {pgsql-ver} $br
  $br
  [-- ] $ob [ Diff summary ] $cb $br
  [-- Dropped objects: ] {drop} $br
  [-- Created objects: ] {create} $br
  [-- Changed objects: ] {change} $br
  [-- Truncated tables: ] {truncate} $br
  %if {function} %then
    $br
    [SET check_function_bodies = false;] $br
    [-- ddl-end --] $br
  %end
  %if {search-path} %then
    $br
    [SET search_path=] {search-path} ; $br
    [-- ddl-end --] $br
  %end
  %if {unset-perms} %then
    $br $br
    [-- ] $ob [ Undone permissions ] $cb [ --] $br
    {unset-perms}
  %end
  %if {drop-cmds} %then
    $br $br
    [-- ] $ob [ Dropped objects ] $cb [ --] $br
    {drop-cmds}
  %end
 
  %if {create-cmds} %then
    $br $br
    [-- ] $ob [ Created objects ] $cb [ --] $br   
    {create-cmds}
  %end
  
  %if {truncate-cmds} %then
    $br $br
    [-- ] $ob [ Truncated tables ] $cb [ --] $br
    {truncate-cmds}
  %end
  %if {alter-cmds} %then
    $br $br
    [-- ] $ob [ Changed objects ] $cb [ --] $br
    {alter-cmds}
  %end
  %if {constr-defs} %then
    $br $br
    [-- ] $ob [ Created constraints ] $cb [ --] $br
    {constr-defs}
  %end
  
  %if {fk-defs} %then
    $br $br
    [-- ] $ob [ Created foreign keys ] $cb [ --] $br
    {fk-defs}
  %end
  %if {set-perms} %then
    $br $br
    [-- ] $ob [ Created permissions ] $cb [ --] $br
    {set-perms}
  %end
%end
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