AWS - DynamoDB
You need to retrieve all items with a specific partition key and a sort key value greater than 1000. Which operation and parameters should you use for best performance?
You need to retrieve all items with a specific partition key and a sort key value greater than 1000. Which operation and parameters should you use for best performance?
hard📝 Best Practice Q8 of 15
Step-by-Step Solution
Solution:
Step 1: Use Query for partition key and sort key conditions
Query supports KeyConditionExpression with partition key and sort key range conditions efficiently.Step 2: Avoid Scan for performance
Scan reads entire table and filters after reading, which is inefficient.Final Answer:
Query with KeyConditionExpression: partitionKey = :pkval AND sortKey > :val -> Option AQuick Check:
Use Query with KeyConditionExpression for key range queries [OK]
Quick Trick: Use Query with KeyConditionExpression for key range filters [OK]
Common Mistakes:
MISTAKES- Using Scan for key range queries
- Using FilterExpression instead of KeyConditionExpression
- Confusing Query and Scan parameters
Master "DynamoDB" in AWS
Want More Practice?
15+ quiz questions · All difficulty levels · Free
Free Signup - Practice All QuestionsMore AWS Quizzes