摘要: //1两表联合查询 db.orders.aggregate([ { $lookup: { from: "inventory",//附表 localField: "item.name",//主表字段 foreignField: "sku",//附表字段 as: "inventory_docs"//附表 阅读全文
posted @ 2020-06-17 09:47 帖子搬运工 阅读(175) 评论(0) 推荐(0)