如何将 SQL 查询转换为 MongoDB

Question

SELECT s_name FROM supplier 
WHERE s_suppkey = ALL
(SELECT s_suppkey FROM supplier
WHERE s_nationkey > 50 AND s_acctbal= 9658.99 )

我不知道这部分怎么做

WHERE s_suppkey = ALL
    (SELECT s_suppkey FROM supplier
    WHERE s_nationkey > 50 AND s_acctbal= 9658.99 )

Answer 1

db.supplier.find( {}, { $and : [  {  s_nationkey : { '$gt' : 50 } }, { s_acctbal : 9658.99 } ] } ,{s_suppkey:1} )

但不返回供应商名称！

Answer 2

你 SQL 看起来有点奇怪。 对于 Mongo，试试这个：

db.supplier.find({ s_nationkey: { '$gt': 50 }, s_acctbal: 9658.99 }, {s_name :1} )