ruby Active Record代码示例

Posted 2021-05-15

ActiveRecord::Base.transaction do
  1000.times { Model.create(options) }
end

1000.times do |i|
  Foo.connection.execute "INSERT INTO foos (counter) values (#{i})"
end

Foo.transaction do
  1000.times do |i|
    Foo.connection.execute "INSERT INTO foos (counter) values (#{i})"
  end
end

ActiveRecord::Base.establish_connection
ActiveRecord::Base.connection.execute(sql,[num1,num2])

ActiveRecord::Base.connection.execute "insert into additional_news@pl select * from additional_news where id=#{self.id}"
ActiveRecord::Base.connection.execute("DELETE FROM rabbit_costs WHERE `year`=#{cost_date[0]} and `month`=#{cost_date[1]}")
# 执行存储过程
ActiveRecord::Base.connection.execute("call insert_rabbitcost(#{cost_date[0]},#{cost_date[1]},'#{c.from_date}','#{c.to_date}')")

ActiveRecord::Base.connection.execute("update department_costs set lims_cost=0, lims_labour_cost=0,lims_material_cost=0,lims_other_cost=0 WHERE `year`=#{cost_date[0]} and `month`=#{cost_date[1]}")


ActiveRecord::Base.connection.select_all(sql)

ActiveRecord::Base.connection.select_all("SELECT rabbits.farm_id,rabbits.`name` as rabbit_name,projects.`name` as project_name,projects.project_category as project_category,rabbit_costs.`year`,rabbit_costs.`month`,rabbit_handlings.handling_date as injection1_date,rabbits.died_date,
rabbit_costs.total_cost as handling_cost,rabbit_costs.feeding_days,rabbit_costs.feeding_cost
FROM rabbit_costs,rabbits,rabbit_handlings,projects
WHERE rabbit_costs.rabbit_id=rabbits.id and rabbit_costs.rabbit_id=rabbit_handlings.rabbit_id and rabbit_handlings.project_id=projects.id
and rabbit_handlings.handling_type='injection1' #{sql} ")


# 获取数据库里所有的表
ActiveRecord::Base.connection.tables