Sequelize ORM中连接表的条件 | ORM中连接表的条件

本文介绍了Sequelize ORM中连接表的条件的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

我想用 sequelize ORM 得到这样的查询:

I want to get query like this with sequelize ORM:

SELECT "A".*,
FROM "A"
LEFT OUTER JOIN "B" ON "A"."bId" = "B"."id"
LEFT OUTER JOIN "C" ON "A"."cId" = "C"."id"
WHERE ("B"."userId" = '100'
       OR "C"."userId" = '100')

问题是续集不允许我在 where 子句中引用B"或C"表.以下代码

The problem is that sequelise not letting me to reference "B" or "C" table in where clause. Following code

A.findAll({
    include: [{
        model: B,
        where: {
            userId: 100
        },
        required: false

    }, {
        model: C,
        where: {
            userId: 100
        },
        required: false
    }]
]

给我

SELECT "A".*,
FROM "A"
LEFT OUTER JOIN "B" ON "A"."bId" = "B"."id" AND "B"."userId" = 100
LEFT OUTER JOIN "C" ON "A"."cId" = "C"."id" AND "C"."userId" = 100

这是完全不同的查询，结果是

which is completely different query, and result of

A.findAll({
    where: {
        $or: [
            {'"B"."userId"' : 100},
            {'"C"."userId"' : 100}
        ]
    },
    include: [{
        model: B,
        required: false

    }, {
        model: C,
        required: false
    }]
]

甚至不是一个有效的查询:

is no even a valid query:

SELECT "A".*,
FROM "A"
LEFT OUTER JOIN "B" ON "A"."bId" = "B"."id"
LEFT OUTER JOIN "C" ON "A"."cId" = "C"."id"
WHERE ("A"."B.userId" = '100'
       OR "A"."C.userId" = '100')

sequelize 是否可以进行第一次查询，或者我应该坚持原始查询?

Is first query even possible with sequelize, or I should just stick to raw queries?

推荐答案

将引用连接表的列包装在 $$

Wrap the columns which reference joined tables in $$

A.findAll({
    where: {
        $or: [
            {'$B.userId$' : 100},
            {'$C.userId$' : 100}
        ]
    },
    include: [{
        model: B,
        required: false

    }, {
        model: C,
        required: false
    }]
});

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