Sequelize 将 2 个查询组合为 sub where

Question

我有 2 个表 SocialPostEntity 和 ResearchEntity。
ResearchEntity 有一个字段 relatedId 代表 SocialPostEntity.id.
在我的映射中，ResearchEntity.relatedId 未映射，出于抽象原因，它只是一个整数。也没有外键。我想在单个查询中包含以下内容：

select * from ResearchEntity where relatedId in (select id  from SocialPostEntity);

目前，我已经在 2 个不同的查询中解决了它，这根本没有效率：

const fromPosts = await SocialPostEntity.findAll({ attributes: ['id'], where: { status: 1 } });
const allRelated = await ResearchEntity.findAll({ where: { postId: fromPosts.map(x => x.id) } });

不想用原生SQL字符串查询，想用sequlize查询API.
是否可以将“in”语句和 select 结合起来？ in (select id from SocialPostEntity)?

谢谢

Answer 1

此功能请求仍处于打开状态：https://github.com/sequelize/sequelize/issues/9509。

documentation refers to the sequelize.literal utility to perform subqueries, which is the approach used by similar questions:

const subquery = sequelize.dialect.queryGenerator.selectQuery(SocialPostEntity.tableName, {
    attributes: ['id'],
    where: { status: 1 }
}).slice(0, -1);

const allRelated = await ResearchEntity.findAll({
    where: { postId: { [Op.in] : sequelize.literal(`( ${subquery} )`) } }
});

Sequelize 将 2 个查询组合为 sub where

Sequelize combine 2 queries as sub where

subquery

sequelize.js