Question 1mediummulti select
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{
"ns": "finance.accounts",
"min": { "region": "EMEA", "account_id": MinKey },
"max": { "region": "EMEA", "account_id": MaxKey },
"shard": "shard01"
}{ "ok" : 0, "errmsg" : "a sharded collection must have an index starting with the shard key", "code" : 85, "codeName" : "ShardKeyNotFound"levant }