cube.js 也支持join，
joins: {
TargetCubeName: {
relationship: `belongsTo` || `hasMany` || `hasOne`,
sql: `SQL ON clause`
}
}cube("Authors", {
joins: {
Books: {
relationship: `hasMany`,
sql: `${Authors}.id = ${Books}.author_id`
}
}
});详细的可以参考官方文档，都是一些基本的配置
原文：https://www.cnblogs.com/rongfengliang/p/10804373.html