使用内连接计数对查询进行续集 [英] Sequelize query with count in inner join

问题描述

我正在尝试将此查询转换为对查询对象进行续集的正确方法是什么?

I am trying to convert this query to sequelize query object what is the right wayto do it?

SELECT families.id, count('answers.familyId') FROM families LEFT JOIN 
answers on families.id = answers.familyId WHERE answers.isActive=1 AND
answers.answer=1 GROUP BY families.id HAVING COUNT('answers.familyId')>=6

推荐答案

假设 Family 是你的 families sequelize 模型，而 Answer 是您的 answers 续集模型，而 sequelize 是您的 Sequelize 实例

Let's assume that Family is your families sequelize model and Answer is your answers sequelize model, and sequelize is your Sequelize instance

Family.findAll({
    attributes: ['*', sequelize.fn('COUNT', sequelize.col('Answers.familyId'))],
    include: [
        {
            model: Answer,
            attributes: [],
            where: {
                isActive: 1,
                answer: 1
            }
        }
    ],
    group: '"Family.id"',
    having: sequelize.where(sequelize.fn('COUNT', sequelize.col('Answers.familyId')), '>=', 6)
}).then((families) => {
    // result
});

有用的文档链接:

• sequelize.fn()
• sequelize.where()
• sequelize.col()

这篇关于使用内连接计数对查询进行续集的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！