使用Sequelize.js创建JOIN WHERE键IN（SELECT键FROM ...）

Question

Im a noob in Sequelize.js and somewhat less in Angular but must solve a problem in which I want to use a subquery as a condition of a JOIN. I paste some examples below because code says more then words.

SQL

INNER JOIN table ON table.key IN(SELECT current_key FROM historysnake WHERE original_key IN(
       SELECT original_key FROM historysnake WHERE current_key = table.key)
AND historysnake.model = 'tablename')

The question is: How can I put above query into a Sequelize object? Something like:

Sequelize.js

var foo = sequelize.define('foo', {...}, {
    classMethods: {
        associate: function(models) {
            foo.hasMany(...)
        }
    }
});

Answer 1

Ok, here's an example, which assumes that PK of PatientEvents is the original_key on all the history rows:

PatientEvents.hasMany(HistorySnake, {foreignKey : 'original_key'});

PatientEvents.findAll({
   include: [{
       model: HistorySnake,
       required : true,      // true = INNER JOIN but you might need outer join to see events with no history
       where : { modelName : 'PatientEvents' }  // as needed
       }],
   where: { patient_name : 'xyz' }  // as needed
   })        

Answer 2

I figured it out. I'm not really sure if @KenOn10's answer would've worked. I'm too much of a noob on this subject for that but thanks for the answer anyway.

I ended up specifying my own 'on' clause like this.

models.Aim.find({
    include: [{
        model: models.ObjectiveReport,
        required: false,
        where: ['ObjectiveReports.report_entrydate >= ?', show_date],
            on: {
                aim_id: sequelize.literal('aim.aim_id IN(SELECT current_key FROM historysnake WHERE original_key IN(SELECT original_key FROM historysnake WHERE current_key = aim.aim_id) AND historysnake.model = "aim")')
            })
...