GraphQL - Basics and Philosophy
If a GraphQL query requests only the user's ID but the client needs the user's name and email too, what will happen?
If a GraphQL query requests only the user's ID but the client needs the user's name and email too, what will happen?
medium📝 query result Q5 of 15
Step-by-Step Solution
Solution:
Step 1: Understand requested vs needed data
The query requests only ID, but client needs name and email too.Step 2: Identify under-fetching effect
Client gets only ID and must send more queries to get name and email.Final Answer:
The client receives only the ID and must request again for missing data -> Option AQuick Check:
Missing fields = Under-fetching causes extra requests [OK]
Quick Trick: Request all needed fields to avoid multiple queries [OK]
Common Mistakes:
- Assuming server fills missing fields automatically
- Thinking server returns error for missing fields
- Confusing under-fetching with over-fetching
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