Merge pull request #15722 from akshay-vishnoi/spell-correct

[ci skip] /mysql/i -> MySQL, Spell correct in continuation to #15555

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

@@ -193,7 +193,7 @@ def supports_statement_cache?
       # * You are creating a nested (savepoint) transaction
       #
       # The mysql, mysql2 and postgresql adapters support setting the transaction
-      # isolation level. However, support is disabled for mysql versions below 5,
+      # isolation level. However, support is disabled for MySQL versions below 5,
       # because they are affected by a bug[http://bugs.mysql.com/bug.php?id=39170]
       # which means the isolation level gets persisted outside the transaction.
       def transaction(options = {})
@@ -338,8 +338,8 @@ def sanitize_limit(limit)
       end
 
       # The default strategy for an UPDATE with joins is to use a subquery. This doesn't work
-      # on mysql (even when aliasing the tables), but mysql allows using JOIN directly in
-      # an UPDATE statement, so in the mysql adapters we redefine this to do that.
+      # on MySQL (even when aliasing the tables), but MySQL allows using JOIN directly in
+      # an UPDATE statement, so in the MySQL adapters we redefine this to do that.
       def join_to_update(update, select) #:nodoc:
         key = update.key
         subselect = subquery_for(key, select)

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

@@ -788,7 +788,7 @@ def add_index_sort_order(option_strings, column_names, options = {})
           return option_strings
         end
 
-        # Overridden by the mysql adapter for supporting index lengths
+        # Overridden by the MySQL adapter for supporting index lengths
         def quoted_columns_for_index(column_names, options = {})
           option_strings = Hash[column_names.map {|name| [name, '']}]
 

activerecord/lib/active_record/connection_adapters/abstract_mysql_adapter.rb

@@ -75,7 +75,7 @@ def default
         end
 
         def has_default?
-          return false if blob_or_text_column? #mysql forbids defaults on blob and text columns
+          return false if blob_or_text_column? # MySQL forbids defaults on blob and text columns
           super
         end
 
@@ -213,7 +213,7 @@ def new_column(field, default, cast_type, sql_type = nil, null = true, collation
         Column.new(field, default, cast_type, sql_type, null, collation, strict_mode?, extra)
       end
 
-      # Must return the Mysql error number from the exception, if the exception has an
+      # Must return the MySQL error number from the exception, if the exception has an
       # error number.
       def error_number(exception) # :nodoc:
         raise NotImplementedError

activerecord/lib/active_record/connection_adapters/mysql_adapter.rb

@@ -409,7 +409,7 @@ def exec_stmt(sql, name, binds)
             stmt.execute(*type_casted_binds.map { |_, val| val })
           rescue Mysql::Error => e
             # Older versions of MySQL leave the prepared statement in a bad
-            # place when an error occurs. To support older mysql versions, we
+            # place when an error occurs. To support older MySQL versions, we
             # need to close the statement and delete the statement from the
             # cache.
             stmt.close

activerecord/lib/active_record/tasks/mysql_database_tasks.rb

@@ -124,7 +124,7 @@ def root_configuration_without_database
       end
 
       def root_password
-        $stdout.print "Please provide the root password for your mysql installation\n>"
+        $stdout.print "Please provide the root password for your MySQL installation\n>"
         $stdin.gets.strip
       end
 

activerecord/test/cases/binary_test.rb

@@ -21,7 +21,7 @@ def test_mixed_encoding
 
       name = binary.name
 
-      # Mysql adapter doesn't properly encode things, so we have to do it
+      # MySQL adapter doesn't properly encode things, so we have to do it
       if current_adapter?(:MysqlAdapter)
         name.force_encoding(Encoding::UTF_8)
       end

activerecord/test/cases/migration/column_attributes_test.rb

@@ -62,7 +62,7 @@ def test_native_decimal_insert_manual_vs_automatic
         # Do a manual insertion
         if current_adapter?(:OracleAdapter)
           connection.execute "insert into test_models (id, wealth) values (people_seq.nextval, 12345678901234567890.0123456789)"
-        elsif current_adapter?(:MysqlAdapter) && Mysql.client_version < 50003 #before mysql 5.0.3 decimals stored as strings
+        elsif current_adapter?(:MysqlAdapter) && Mysql.client_version < 50003 #before MySQL 5.0.3 decimals stored as strings
           connection.execute "insert into test_models (wealth) values ('12345678901234567890.0123456789')"
         elsif current_adapter?(:PostgreSQLAdapter)
           connection.execute "insert into test_models (wealth) values (12345678901234567890.0123456789)"

activerecord/test/cases/migration/logger_test.rb

@@ -3,7 +3,7 @@
 module ActiveRecord
   class Migration
     class LoggerTest < ActiveRecord::TestCase
-      # mysql can't roll back ddl changes
+      # MySQL can't roll back ddl changes
       self.use_transactional_fixtures = false
 
       Migration = Struct.new(:name, :version) do