过滤和扫描PHP中的表DynamoDB

Question

I have a table Client which contains information like this :

{
  "address": "XXX",
  "contact_email": "XXX",
  "id": 1,
  "password": "XXX",
}

The primary partition key is the id (Number) and I want to retrieve a client information by a contact_email using PHP.

Answer 1

When you query the dynamodb, partition key is must. When you scan the dynamodb, partition key is optional. But Scan is slower than Query.

Try with this

var params = {
        "TableName": tableName,
        "FilterExpression": "contact_email = :val1",
        "ExpressionAttributeValues": {
            ":val1": contact_email
        },
        "ReturnConsumedCapacity": "TOTAL"
    };