How can I Use begins_with method on primary key in DynamoDB?

Question

I have Table with 2 attribute id(string,primary key), value(string). When I try follwoing KeyConditionExpression it throws Query key condition not supported

Answer 1

You can use begins_with and contains only with a range key after specifying an EQ condition for the primary key.

To use EQ with the primary key you can do

KeyConditionExpression: "ID = :tagIDValue"