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Javascript 如果Sequelize中不存在嵌套记录,如何获取所有记录_Javascript_Node.js_Postgresql_Sequelize.js - Fatal编程技术网

Javascript 如果Sequelize中不存在嵌套记录,如何获取所有记录

Javascript 如果Sequelize中不存在嵌套记录,如何获取所有记录,javascript,node.js,postgresql,sequelize.js,Javascript,Node.js,Postgresql,Sequelize.js,如果子记录在Sequelize上不存在,我希望获取所有父记录,如下面的代码获取所有带有if嵌套记录的记录 const posts = await Post.findAll({ order: [ ['createdAt', 'DESC'] ], include: [{ model: db.replies, as: 'replies', createdAt: 'DESC' }] }) 上述代码从Post获取所有数据,无

如果子记录在Sequelize上不存在,我希望获取所有父记录,如下面的代码获取所有带有if嵌套记录的记录

const posts = await Post.findAll({
    order: [
        ['createdAt', 'DESC']
    ],
    include: [{
        model: db.replies, as: 'replies',
        createdAt: 'DESC'
    }]
})
上述代码从
Post
获取所有数据,无论
回复是否存在,但出于某种原因,我想获取所有
Post
,这些Post不包含任何
回复
,这意味着子记录不存在

请问,我怎样才能做到这一点


谢谢

您可以使用如下语法从父模型的“where”对象引用嵌套模型的列:“$AssociatedTableName.columnName$”

尝试添加:

where: {
          '$replies.id$': null 
        },
必填项:false

结果将是:

const posts = await Post.findAll({
 where: {
          '$replies.id$': null 
        },
    order: [
        ['createdAt', 'DESC']
    ],
    include: [{
        model: db.replies, as: 'replies',
        createdAt: 'DESC',
        required: false
    }]
})

您可以使用如下语法从父模型的“where”对象引用嵌套模型的列:“$AssociatedTableName.columnName$”

尝试添加:

where: {
          '$replies.id$': null 
        },
必填项:false

结果将是:

const posts = await Post.findAll({
 where: {
          '$replies.id$': null 
        },
    order: [
        ['createdAt', 'DESC']
    ],
    include: [{
        model: db.replies, as: 'replies',
        createdAt: 'DESC',
        required: false
    }]
})