如何从terraform中的本地地图中删除键值对？

我有一个如下所示的局部值，我想从中删除Mongo-S对，因为它没有dbv值

merged_mongo_locals = {
      MongoA-0 = {
           az           = "ap-south-1a"
           dbv          = 50
           service_name = "MongoA"
        }
       MongoC-0 = {
           az           = "ap-south-1a"
           dbv          = 50
           service_name = "MongoC"
        }
       MongoC-1 = {
           az           = "ap-south-1b"
           dbv          = 50
           service_name = "MongoC"
        }
       MongoD-0 = {
           az           = "ap-south-1a"
           dbv          = 100
           service_name = "MongoD"
        }
       MongoD-1 = {
           az           = "ap-south-1b"
           dbv          = 100
           service_name = "MongoD"
        }
       MongoD-2 = {
           az           = "ap-south-1c"
           dbv          = 100
           service_name = "MongoD"
        }
       MongoM-0 = {
           az           = "ap-south-1a"
           dbv          = 50
           service_name = "MongoM"
        }
       MongoS-0 = {
           az           = "ap-south-1a"
           service_name = "MongoS"
        }
       MongoS-1 = {
           az           = "ap-south-1b"
           service_name = "MongoS"
        }
    }

Changes to Outputs:
  + Mongo-ips = {
      + MongoA-0 = {
          + az           = "ap-south-1a"
          + dbv          = 50
          + service_name = "MongoA"
        }
      + MongoC-0 = {
          + az           = "ap-south-1a"
          + dbv          = 50
          + service_name = "MongoC"
        }
      + MongoC-1 = {
          + az           = "ap-south-1b"
          + dbv          = 50
          + service_name = "MongoC"
        }
      + MongoD-0 = {
          + az           = "ap-south-1a"
          + dbv          = 100
          + service_name = "MongoD"
        }
      + MongoD-1 = {
          + az           = "ap-south-1b"
          + dbv          = 100
          + service_name = "MongoD"
        }
      + MongoD-2 = {
          + az           = "ap-south-1c"
          + dbv          = 100
          + service_name = "MongoD"
        }
      + MongoM-0 = {
          + az           = "ap-south-1a"
          + dbv          = 50
          + service_name = "MongoM"
        }
      + MongoS-0 = {
          + az           = "ap-south-1a"
          + service_name = "MongoS"
        }
      + MongoS-1 = {
          + az           = "ap-south-1b"
          + service_name = "MongoS"
        }
    }

我正在使用下面的方法删除MongoS密钥对

输出“Mongo IP”{ value={for k，v in local.merged_mongo_locals:k=>v if！contains（value（v），“dbv”）} }

但是输出如下所示，它没有排除MongoS对，即使它没有dbv值

merged_mongo_locals = {
      MongoA-0 = {
           az           = "ap-south-1a"
           dbv          = 50
           service_name = "MongoA"
        }
       MongoC-0 = {
           az           = "ap-south-1a"
           dbv          = 50
           service_name = "MongoC"
        }
       MongoC-1 = {
           az           = "ap-south-1b"
           dbv          = 50
           service_name = "MongoC"
        }
       MongoD-0 = {
           az           = "ap-south-1a"
           dbv          = 100
           service_name = "MongoD"
        }
       MongoD-1 = {
           az           = "ap-south-1b"
           dbv          = 100
           service_name = "MongoD"
        }
       MongoD-2 = {
           az           = "ap-south-1c"
           dbv          = 100
           service_name = "MongoD"
        }
       MongoM-0 = {
           az           = "ap-south-1a"
           dbv          = 50
           service_name = "MongoM"
        }
       MongoS-0 = {
           az           = "ap-south-1a"
           service_name = "MongoS"
        }
       MongoS-1 = {
           az           = "ap-south-1b"
           service_name = "MongoS"
        }
    }

Changes to Outputs:
  + Mongo-ips = {
      + MongoA-0 = {
          + az           = "ap-south-1a"
          + dbv          = 50
          + service_name = "MongoA"
        }
      + MongoC-0 = {
          + az           = "ap-south-1a"
          + dbv          = 50
          + service_name = "MongoC"
        }
      + MongoC-1 = {
          + az           = "ap-south-1b"
          + dbv          = 50
          + service_name = "MongoC"
        }
      + MongoD-0 = {
          + az           = "ap-south-1a"
          + dbv          = 100
          + service_name = "MongoD"
        }
      + MongoD-1 = {
          + az           = "ap-south-1b"
          + dbv          = 100
          + service_name = "MongoD"
        }
      + MongoD-2 = {
          + az           = "ap-south-1c"
          + dbv          = 100
          + service_name = "MongoD"
        }
      + MongoM-0 = {
          + az           = "ap-south-1a"
          + dbv          = 50
          + service_name = "MongoM"
        }
      + MongoS-0 = {
          + az           = "ap-south-1a"
          + service_name = "MongoS"
        }
      + MongoS-1 = {
          + az           = "ap-south-1b"
          + service_name = "MongoS"
        }
    }

请告诉我这里出了什么问题

这应该对您有所帮助

output "Mongo-ips" {
  value = { for k, v in local.merged_mongo_locals : k => v if contains(keys(v), "dbv") }
}