2 回答
- 最新
- 投票最多
- 评论最多
0
There's no workaround for now, the $let and $expr operators are not supported and are needed in order to achieve this extension to $lookup. As we are working backwards from customer needs, these operators may be supported in the future versions of the service.
已回答 4 年前

Does it support it now?
Hi! any updates for uncorrelated subqueries?