Merge pull request #49562 from akhilgkrishnan/update-postgres-naming-…

…to-postgresql

Update postgres naming to PostgreSQL

activerecord/lib/active_record/connection_adapters/abstract/schema_statements.rb

@@ -1398,7 +1398,7 @@ def distinct_relation_for_primary_key(relation) # :nodoc:
 
         limited = relation.reselect(values).distinct!
         limited_ids = select_rows(limited.arel, "SQL").map do |results|
-          results.last(Array(relation.primary_key).length) # ignores order values for MySQL and Postgres
+          results.last(Array(relation.primary_key).length) # ignores order values for MySQL and PostgreSQL
         end
 
         if limited_ids.empty?

activerecord/lib/active_record/connection_adapters/postgresql/oid/timestamp_with_time_zone.rb

@@ -15,7 +15,7 @@ def cast_value(value)
             time = super
             return time if time.is_a?(ActiveSupport::TimeWithZone) || !time.acts_like?(:time)
 
-            # While in UTC mode, the PG gem may not return times back in "UTC" even if they were provided to Postgres in UTC.
+            # While in UTC mode, the PG gem may not return times back in "UTC" even if they were provided to PostgreSQL in UTC.
             # We prefer times always in UTC, so here we convert back.
             if is_utc?
               time.getutc

activerecord/lib/active_record/relation/query_methods.rb

@@ -588,7 +588,7 @@ def regroup!(*args) # :nodoc:
     #   User.order(Arel.sql('end_date - start_date'))
     #   # SELECT "users".* FROM "users" ORDER BY end_date - start_date
     #
-    # Custom query syntax, like JSON columns for Postgres, is supported in this way.
+    # Custom query syntax, like JSON columns for PostgreSQL, is supported in this way.
     #
     #   User.order(Arel.sql("payload->>'kind'"))
     #   # SELECT "users".* FROM "users" ORDER BY payload->>'kind'

activerecord/test/cases/adapter_prevent_writes_test.rb

@@ -54,7 +54,7 @@ def test_errors_when_a_delete_query_is_called_while_preventing_writes
     if current_adapter?(:PostgreSQLAdapter)
       def test_doesnt_error_when_a_select_query_has_encoding_errors
         ActiveRecord::Base.while_preventing_writes do
-          # Contrary to other adapters, Postgres will eagerly fail on encoding errors.
+          # Contrary to other adapters, PostgreSQL will eagerly fail on encoding errors.
           # But at least we can assert it fails in the client and not before when trying to
           # match the query.
           assert_raises ActiveRecord::StatementInvalid do

activerecord/test/cases/calculations_test.rb

@@ -1203,7 +1203,7 @@ def test_pluck_functions_with_alias
 
   def test_pluck_functions_without_alias
     expected = if current_adapter?(:PostgreSQLAdapter)
-      # Postgres returns the same name for each column in the given query, so each column is named "coalesce"
+      # PostgreSQL returns the same name for each column in the given query, so each column is named "coalesce"
       # As a result Rails cannot accurately type cast each value.
       # To work around this, you should use aliases in your select statement (see test_pluck_functions_with_alias).
       [

activerecord/test/cases/defaults_test.rb

@@ -17,7 +17,7 @@ def test_nil_defaults_for_not_null_columns
   if current_adapter?(:PostgreSQLAdapter) || current_adapter?(:SQLite3Adapter)
     def test_multiline_default_text
       record = Default.new
-      # older postgres versions represent the default with escapes ("\\012" for a newline)
+      # older PostgreSQL versions represent the default with escapes ("\\012" for a newline)
       assert("--- []\n\n" == record.multiline_default || "--- []\\012\\012" == record.multiline_default)
     end
   end

activerecord/test/cases/query_logs_test.rb

@@ -242,7 +242,7 @@ def test_sqlcommenter_format_value_string_coercible
     end
   end
 
-  # Postgres does validate the query encoding. Other adapters don't care.
+  # PostgreSQL does validate the query encoding. Other adapters don't care.
   unless current_adapter?(:PostgreSQLAdapter)
     def test_invalid_encoding_query
       ActiveRecord::QueryLogs.tags = [ :application ]

guides/source/7_1_release_notes.md

@@ -684,7 +684,7 @@ Please refer to the [Changelog][active-record] for detailed changes.
     ```
 
 *   Auto generated index names are now limited to 62 bytes, which fits within the default
-    index name length limits for MySQL, Postgres and SQLite.
+    index name length limits for MySQL, PostgreSQL and SQLite.
 
 *   Introduce adapter for Trilogy database client.
 

railties/lib/rails/generators/rails/app/templates/config/databases/jdbcpostgresql.yml.tt

@@ -12,13 +12,13 @@ development:
   <<: *default
   database: <%= app_name %>_development
 
-  # The specified database role being used to connect to postgres.
-  # To create additional roles in postgres see `$ createuser --help`.
-  # When left blank, postgres will use the default role. This is
+  # The specified database role being used to connect to PostgreSQL.
+  # To create additional roles in PostgreSQL see `$ createuser --help`.
+  # When left blank, PostgreSQL will use the default role. This is
   # the same name as the operating system user running Rails.
   #username: <%= app_name %>
 
-  # The password associated with the postgres role (username).
+  # The password associated with the PostgreSQL role (username).
   #password:
 
   # Connect on a TCP socket. Omitted by default since the client uses a

railties/lib/rails/generators/rails/app/templates/config/databases/postgresql.yml.tt

@@ -23,13 +23,13 @@ development:
   <<: *default
   database: <%= app_name %>_development
 
-  # The specified database role being used to connect to postgres.
-  # To create additional roles in postgres see `$ createuser --help`.
-  # When left blank, postgres will use the default role. This is
+  # The specified database role being used to connect to PostgreSQL.
+  # To create additional roles in PostgreSQL see `$ createuser --help`.
+  # When left blank, PostgreSQL will use the default role. This is
   # the same name as the operating system user running Rails.
   #username: <%= app_name %>
 
-  # The password associated with the postgres role (username).
+  # The password associated with the PostgreSQL role (username).
   #password:
 
   # Connect on a TCP socket. Omitted by default since the client uses a