AWS-cli ec2 describe instances

i am digging on aws cli and from past 5 hours i struggling with 2 cli commands

1. i should get InstanceId, Name(this is a tag value) and specific tag value by providing its key ( including not tags given i.e NULL)

2. I should get InstanceId, Name and specific tag value by providing its key ( excluding NULL tags)

i got 50% of the answer for the 1 Question & 2 Question 0%

My cli command:

aws ec2 describe-instances --query 'jsondata[ ].Instances[ ].[InstanceId, [Tags[?keys='Name'].Value] [0][0]' --output table

{
   "Jsondata":[
      {
         "Instances":"i-xxxxxx",
         "Tags":[
            {
               "valve":" testserver",
               "key":"server"
            },
            {
               "valve":" elb",
               "key":"Name"
            }
         ]
      },
      {
         "Instances":"i-yyyyyy",
         "Tags":[
            {
               "valve":" ",
               "key":" "
            },
            {
               "valve":" elb2",
               "key":"Name"
            }
         ]
      }
   ]
}

To describe all instances with Tag "NAME" Use:

aws ec2 describe-instances --filters "Name=tag-key,Values=Name"

or

This Gives InstanceId with Particular Tag "Name"

aws ec2 describe-instances --query 'Reservations[].Instances[].[InstanceId, Tags[?Key==`Name`].Value[0]]'

or

This Gives InstanceId with Particular Tag "Name" and Value of Tag

aws ec2 describe-instances --query 'Reservations[].Instances[].[InstanceId, Tags[?Key==`Name`], Tags[?Key==`Name`].Value[]]'

To describe all instances with Tag "Purpose" and its value as "test" Use:

aws ec2 describe-instances --filters "Name=tag:Purpose,Values=test"

If you already know the Instance id:

aws ec2 describe-instances --instance-ids i-1234567890abcdef0

To find every instance which doesn't contain a tag named "Purpose":

aws ec2 describe-instances | jq '.Reservations[].Instances[] | select(contains({Tags: [{Key: "Purpose"} ]}) | not)'

To filter against the value of the tag, instead of the name of the tag:

aws ec2 describe-instances | jq '.Reservations[].Instances[] | select(contains({Tags: [{Key: "Name"}, {Value: "testbox1"}]}) | not)'

To find every instance which doesn't contain a tag:

aws ec2 describe-instances | jq '.Reservations[].Instances[] | select(contains({Tags: [{Key: ""}, {Value: ""}]}) | not)'