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Mastering DynamoDB
book

Mastering DynamoDB

by Tanmay Deshpande
August 2014
Beginner to intermediate content levelBeginner to intermediate
236 pages
5h 7m
English
Packt Publishing
Content preview from Mastering DynamoDB

Query and scan operations

The query operation is a very important operation that allows us to fetch specific items from the given table. It needs a primary input and an optional start key to compare with the list of items. The query fetches all matching entries to the input from a given table. You can also use comparison operations, such as greater than, less than, contains, between, and so on to narrow down the result set. Data returned from a query or scan operation is limited to 1 MB. If it does not find any matching items with respect to a given input key, it returns an empty set.

Query results are always sorted in the order of the range key value. By default, the order of sorting is ascending. If a table has secondary index, then the query ...

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Publisher Resources

ISBN: 9781783551958Supplemental Content