如何在续集查询方法中将时间戳与当前日期进行比较

Question

如何以续集的方式编写此查询：

select COUNT(*)
    from r5.users
WHERE
    DATE_FORMAT(createdAt,'%Y%c%d')=DATE_FORMAT(current_date(),'%Y%c%d')

Answer 1

你可以这样做，

Model.users.count({
where: Model.Sequelize.where(
    Model.Sequelize.fn('DATE_FORMAT',Model.Sequelize.col('createdAt'),"%Y%c%d"),
    {like:Model.Sequelize.fn('DATE_FORMAT',Model.Sequelize.fn('current_date'),"%Y%c%d")})
});

Sequelize.fn可用于调用数据库函数，它需要Sequelize.fn(functionToCall, argumentsToPassToIt)

形式的语法

Sequelize.Col用于引用特定列，例如createdAt

Sequelize.where可用于向要添加的列添加函数