in exercises/node-javascript/multi-cmk-start/search.js [13:28]
async function search(contextKey, { ExclusiveStartKey, Limit } = {}) {
return ddb
.query({
TableName,
KeyConditionExpression: "#HashKey = :hkey",
ExpressionAttributeValues: {
":hkey": canonicalContextKey(contextKey)
},
ExpressionAttributeNames: {
"#HashKey": partition_key
},
ExclusiveStartKey,
Limit
})
.promise();
}