module ActiveRecord::ConnectionAdapters::SQLServer::CoreExt::Calculations

Public Instance Methods

calculate(operation, column_name) click to toggle source

Same as original except we don't perform PostgreSQL hack that removes ordering.

# File lib/active_record/connection_adapters/sqlserver/core_ext/calculations.rb, line 11
def calculate(operation, column_name)
  if has_include?(column_name)
    relation = apply_join_dependency

    if operation.to_s.downcase == "count"
      unless distinct_value || distinct_select?(column_name || select_for_count)
        relation.distinct!
        relation.select_values = [ klass.primary_key || table[Arel.star] ]
      end
    end

    relation.calculate(operation, column_name)
  else
    perform_calculation(operation, column_name)
  end
end

Private Instance Methods

build_count_subquery(relation, column_name, distinct) click to toggle source
Calls superclass method
# File lib/active_record/connection_adapters/sqlserver/core_ext/calculations.rb, line 30
def build_count_subquery(relation, column_name, distinct)
  super(relation.unscope(:order), column_name, distinct)
end
type_cast_calculated_value(value, type, operation = nil) click to toggle source
# File lib/active_record/connection_adapters/sqlserver/core_ext/calculations.rb, line 34
def type_cast_calculated_value(value, type, operation = nil)
  case operation
  when "count"   then value.to_i
  when "sum"     then type.deserialize(value || 0)
  when "average" then value&.respond_to?(:to_d) ? value.to_d : value
  else type.deserialize(value)
  end
end