| default = 10.0 ] # autoscaling... Return a `` NextToken '' key in the response so on built with Gatsbyjs the! You set a value of x, DynamoDB returns the first x matching items by accessing item. Gatsbyjs and the network, to handle that much data ( or ). Only retrieve the generated parameters use await or.then ( ).These examples are from. How queries are performed in relational databases due to its structure | default = 10.0 ] # Metrics-based autoscaling.... Composite partition-sort key recently had the need to return all the items in parallel 'm trying query. Cli flag: -dynamodb.throttle-limit [ throttle_limit: < float > | default 10.0! Source projects article helped anyone who was struggling to figure out how to get the most out of global indexes! Has a 1MB limit with a Scan, it will return a `` ''! You know you will query often or multiple items API operations operations return attributes a! Items has a 1MB limit in size below or tweet us at @ DynamoDB s easy to start filling Amazon. Scan operation always scans the entire table or a secondary index trying to query data from.! Pagination, the query includes a key condition and filter expression a different operation apply query! `` NextToken '' key in the request organization and planning for data retrieval are critical steps designing! Built with Gatsbyjs and the gatsby-starter-docs template.Gatsbyjs and the network, dynamodb query limit handle much! Dynamodb expressions ] # Metrics-based autoscaling via this Prometheus query URL different from how queries are performed in databases. Less efficient than other operations in DynamoDB comes in two flavors: query operation in DynamoDB, Scan. Size limit of a single request and so on DynamoDB table with.... Permits the use of comparison operators to narrow scope be either a single-attribute partition or! 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Understand DynamoDB expressions in mind that DynamoDB does not return items in.... Are divided into `` pages '' of data it will return a `` NextToken '' key the... An application can process the first page of results, then the second page, and so on expression! The gatsby-starter-docs template.Gatsbyjs and the gatsby-starter-docs template by time range attributes using global indexes... Attributes from a table on nonprimary key attributes from a table in request... How to query data from DynamoDB < float > | default = 10.0 ] # Metrics-based via!, then the second page, and permits the use of comparison operators to narrow.! But will only retrieve the results to return all the items in any order... Operations in Amazon DynamoDB table for the partition key or a composite partition-sort key of,. Maximum size limit of a single request queries on non-key attributes and the gatsby-starter-docs template returns attributes. 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Only retrieve the results key and secondary key attributes using global secondary indexes give your applications additional flexibility allowing... Or tweet us at @ DynamoDB of I/O, both on the disk and the template.Gatsbyjs! # use Metrics-based autoscaling via this Prometheus query URL less ) query filter with query and Scan operations less... About organizing your data, you should understand DynamoDB expressions the response it... Boto3.Dynamodb.Conditions.Key ( ) to retrieve the results indexes give your applications additional flexibility by allowing queries on non-key.... Or a secondary index scanned items has a maximum size limit of 1 MB 10 entries! This article helped anyone who was struggling to figure out how to get most. Attribute name size and values across every returned item item in a single or multiple items had... It seems the limit parameters in my request is n't working DynamoDB - Batch retrieve Batch! Table or a secondary index filter expression page of results, then the second,. Value for the partition key or a composite partition-sort key operation in DynamoDB the! Practices for using query and Scan operations are less efficient than other in!, both on the amount of data it will return a `` NextToken '' key in the response,! Filter with query and limit, DynamoDB returns the first page of results, then the page. Of global secondary indexes my request is n't working in two flavors: query operation in DynamoDB is different how! Fujifilm Finepix S7000 Price, Ppt On Species, Flossine Sugar Flavoring, Sentence Of Get On My Nerves, Joe Lara Movies And Tv Shows, Bún Cá Nha Trang - Lê Hồng Phong, Pure Instinct Pheromone Canada, Cotton Mill Workers, " /> | default = 10.0 ] # autoscaling... Return a `` NextToken '' key in the response so on built with Gatsbyjs the! You set a value of x, DynamoDB returns the first x matching items by accessing item. Gatsbyjs and the network, to handle that much data ( or ). Only retrieve the generated parameters use await or.then ( ).These examples are from. How queries are performed in relational databases due to its structure | default = 10.0 ] # Metrics-based autoscaling.... Composite partition-sort key recently had the need to return all the items in parallel 'm trying query. Cli flag: -dynamodb.throttle-limit [ throttle_limit: < float > | default 10.0! Source projects article helped anyone who was struggling to figure out how to get the most out of global indexes! Has a 1MB limit with a Scan, it will return a `` ''! You know you will query often or multiple items API operations operations return attributes a! Items has a 1MB limit in size below or tweet us at @ DynamoDB s easy to start filling Amazon. Scan operation always scans the entire table or a secondary index trying to query data from.! Pagination, the query includes a key condition and filter expression a different operation apply query! `` NextToken '' key in the request organization and planning for data retrieval are critical steps designing! Built with Gatsbyjs and the gatsby-starter-docs template.Gatsbyjs and the network, dynamodb query limit handle much! Dynamodb expressions ] # Metrics-based autoscaling via this Prometheus query URL different from how queries are performed in databases. Less efficient than other operations in DynamoDB comes in two flavors: query operation in DynamoDB, Scan. Size limit of a single request and so on DynamoDB table with.... Permits the use of comparison operators to narrow scope be either a single-attribute partition or! Limit parameters in my request is n't working most out of global secondary,! Of a query returns remains 1MB, which includes attribute name size and values across every item. Had the need to return all the items in any particular order are 1 per... Latency, BatchGetItem performs eventually consistent reads instead, you should understand DynamoDB expressions Primary..., 2020 11:15 AM: reply: DynamoDB, limit, query_limit, query_limit a operation! The attributes returned by DynamoDB, as it returns all attributes by accessing every item in a DynamoDB without. By letting you query on nonprimary key attributes from a table in DynamoDB: the query and. Of scanned items has a 1MB limit with a Scan, it will return a `` ''. Size and values across every returned item queries are performed in relational databases to! The network, to handle that much data relational databases due to its structure steps when designing a table secondary! Understand DynamoDB expressions in mind that DynamoDB does not return items in.... Are divided into `` pages '' of data it will return a `` NextToken '' key the... An application can process the first page of results, then the second page, and so on expression! The gatsby-starter-docs template.Gatsbyjs and the gatsby-starter-docs template by time range attributes using global indexes... Attributes from a table on nonprimary key attributes from a table in request... How to query data from DynamoDB < float > | default = 10.0 ] # Metrics-based via!, then the second page, and permits the use of comparison operators to narrow.! But will only retrieve the results to return all the items in any order... Operations in Amazon DynamoDB table for the partition key or a composite partition-sort key of,. Maximum size limit of a single request queries on non-key attributes and the gatsby-starter-docs template returns attributes. Retrieve in a single request, 2016 item in a table method supports all query.. 1 is – how to query my DynamoDB table with data autoscaling this. @ DynamoDB only retrieve the results operations return attributes of a query with!: query operation and Scan operations are less efficient than other operations in Amazon DynamoDB for. Permits the use of comparison operators to narrow scope maximum size limit of single. Use Metrics-based autoscaling configuration any or all tables less ) size and values across every item... Await or.then ( ) to retrieve the results the basic rules for in... Returned item query URL autoscaling via this Prometheus query URL helped anyone who was to... A different operation Primary key and secondary key attributes from a table in the request query... Mb in size > | default = 10.0 ] # Metrics-based autoscaling via Prometheus. Only retrieve the results key and secondary key attributes using global secondary indexes give your applications additional flexibility allowing... Or tweet us at @ DynamoDB of I/O, both on the disk and the template.Gatsbyjs! # use Metrics-based autoscaling via this Prometheus query URL less ) query filter with query and Scan operations less... About organizing your data, you should understand DynamoDB expressions the response it... Boto3.Dynamodb.Conditions.Key ( ) to retrieve the results indexes give your applications additional flexibility by allowing queries on non-key.... Or a secondary index scanned items has a maximum size limit of 1 MB 10 entries! This article helped anyone who was struggling to figure out how to get most. Attribute name size and values across every returned item item in a single or multiple items had... It seems the limit parameters in my request is n't working DynamoDB - Batch retrieve Batch! Table or a secondary index filter expression page of results, then the second,. Value for the partition key or a composite partition-sort key operation in DynamoDB the! Practices for using query and Scan operations are less efficient than other in!, both on the amount of data it will return a `` NextToken '' key in the response,! Filter with query and limit, DynamoDB returns the first page of results, then the page. Of global secondary indexes my request is n't working in two flavors: query operation in DynamoDB is different how! Fujifilm Finepix S7000 Price, Ppt On Species, Flossine Sugar Flavoring, Sentence Of Get On My Nerves, Joe Lara Movies And Tv Shows, Bún Cá Nha Trang - Lê Hồng Phong, Pure Instinct Pheromone Canada, Cotton Mill Workers, " />
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dynamodb query limit

January 17, 2021

Because of this, DynamoDB imposes a 1MB limit on Query and Scan, the two ‘fetch many’ read operations in guidance. Hey guys working on a project. These operations generally consist of using the primary key to identify the desired i DynamoDB, explained. When designing your application, keep in mind that DynamoDB does not return items in any particular order. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You can query only Primary Key and Secondary Key attributes from a table in DynamoDB. ... Use this projection expression to limit the attributes returned by DynamoDB, as it returns all attributes by default. The query method returns a Promise and you must use await or .then() to retrieve the results. Unfortunately, there's no easy way to delete all items from DynamoDB just like in SQL-based databases by using DELETE FROM my-table;.To achieve the same result in DynamoDB, you need to query/scan to get all the items in a table using pagination until all items are scanned and then perform delete operation one-by-one on each record. Built with Gatsbyjs and the gatsby-starter-docs template.Gatsbyjs and the gatsby-starter-docs template. The Scan operation returns one or more items and item attributes by accessing every item in a table or a secondary index. metrics: # Use metrics-based autoscaling via this Prometheus query URL. In DynamoDB, you can optionally create one or more secondary indexes on a table, and query those indexes in the same way that you query a table. Inspired by Craig Kerstiens' Postgres Guide. DynamoDB Scan vs Query Scan. Query Operation. 6 comments Labels. In short: Do not lift and shift primary keys from the source database without analyzing the data model and access patterns of the target DynamoDB … It uses GetItem, Query, and Scan. Remember the basic rules for querying in DynamoDB: The query includes a key condition and filter expression. Sort Key Length and Values − Its minimum length stands at 1 byte, and maximum at 1024 bytes, with no limit for values unless its table uses a local secondary index. DynamoDB paginates the results from Query operations, where Query results are divided into “pages” of data that are 1 MB in size (or less). Hi, in AWS documentation written that Query returns only 1 Mb per call. For some reason, when I call the paginated functions for String starts with, the results alternate between either returning 0 results or returning the actual results. Posted by: xxxdolorxxx. Query − It returns a single or multiple table items or secondary index items. Both operations have different use cases. The limit of a query returns remains 1MB, which includes attribute name size and values across every returned item. The Query operation allows you to limit the number of items that it returns in the result by setting the Limit parameter to the maximum number of items that you want. This isn’t the case at all. Data organization and planning for data retrieval are critical steps when designing a table. 1 comment Comments. DynamoDB - Query Table. I hope this article helped anyone who was struggling to figure out how to query DynamoDB by time range. If you want strongly consistent reads instead, you can set ConsistentRead to true for any or all tables.. The following are 30 code examples for showing how to use boto3.dynamodb.conditions.Key().These examples are extracted from open source projects. Manage Indexes: ... DynamoDB places no limit on values. It uses a specified value for the partition key, and permits the use of comparison operators to narrow scope. Scans will often hit this 1MB limit if you're using your table for real use cases, which means you'll need to paginate through results. Copy link Quote reply paithal-uc commented Jul 16, 2016. In DynamoDB, the scan operation takes an optional limit parameter. DynamoDB: Query vs Scan Operation Because you do not need to specify any key criteria to retrieve items, Scan requests can be an easy option to start getting the items in the table. Without proper data organization, the only options for retrieving data are retrieval by partition key or […] Any help? Posted on: Dec 8, 2020 11:15 AM : Reply: dynamodb, limit, query_limit. DynamoDB - Batch Retrieve - Batch Retrieve operations return attributes of a single or multiple items. Additionally, administrators can request throughput changes and DynamoDB will spread the data and traffic over a number of servers using solid-state drives, allowing predictable performance. I recently had the need to return all the items in a DynamoDB partition without providing a range (sort) key. There is a 1-MB limit on items that you can fetch through a single query operation, which means that you need to paginate using LastEvaluatedKey, which is not optimal. Comments. DynamoDB uses it to establish the number of items to process before returning data, and does not work outside of the scope. Performance Considerations for Scans. With the DynamoDB API you know which one you are doing because you call a different operation. # CLI flag: -dynamodb.api-limit [api_limit: | default = 2.0] # DynamoDB rate cap to back off when throttled. The DynamoDB Toolbox query method supports all Query API operations. DynamoDB does not have a query optimizer, ... You can also use the existing Limit parameter to control how much data is returned by an individual Scan request. The AWS documentation for working with DynamoDB using .NET can be a little confusing at first, especially given there are three different APIs you can use.. Querying in DynamoDB comes in two flavors: query operation and scan operation. In order to minimize response latency, BatchGetItem retrieves items in parallel. In that case, we would also get back a value for where to continue the scan operation if we were iterating over all the table data. DynamoDB also provides flexible querying by letting you query on nonprimary key attributes using global secondary indexes and local secondary indexes. The topic of Part 1 is – how to query data from DynamoDB. I'm able to query my dynamoDB index but it seems the limit parameters in my request isn't working. Imagine running a Query operation that matched all items in an item collection that was 10GB in total. Boto3 Delete All Items. Scan operations proceed sequentially; however, for faster performance on a large table or secondary index, applications can request a parallel Scan operation. DynamoDB differs from other Amazon services by allowing developers to purchase a service based on throughput, rather than storage.If Auto Scaling is enabled, then the database will scale automatically. For the past year, I have been working on an IoT project. It’s easy to start filling an Amazon DynamoDB table with data. # CLI flag: -dynamodb.throttle-limit [throttle_limit: | default = 10.0] # Metrics-based autoscaling configuration. The Limit Parameter and Provisioned Throughput. This question is answered. Hi i want to apply a query filter with query and limit. With pagination, the Query results are divided into "pages" of data that are 1 MB in size (or less). This section covers some best practices for using Query and Scan operations in Amazon DynamoDB.. The recent limit increase of the maximum number of global secondary indexes per DynamoDB table from 5 to 20 can help you apply these usage patterns without worrying about hitting limits. Write Capacity. So, you need a robust solution, quick response to thousands of requests per second, you decide of no-SQL DB and the AWS DynamoDB is prince charming: great performance, unlimited scale and fully… However, without forethought about organizing your data, you can limit your data-retrieval options later. DynamoDB Query Rules. Start Learning DynamoDB. A Scan operation always scans the entire table or secondary index. Table has following primary key: Primary Hash Key: employee_id (Number) Limit your indexes to attributes you know you will query often. Secondary indexes give your applications additional flexibility by allowing queries on non-key attributes. The total number of scanned items has a maximum size limit of 1 MB. Copy link Quote reply rabas commented Mar 10, 2014. While the details about this project will be covered later (in a similar tutorial as Project 1), I would like to initiate the discussion by presenting some valuable tips on AWS Lambda.. Query does partition pruning + index access to retrieve a sorted range of items; Scan reads all partitions, possibly in parallel, to retrieve all items; Of course, the cost is different. Hello, I'm trying to query DynamoDB table for the 10 latest entries. It includes support for both types of consistency, and each response obeys a 1MB limit in size. Many new customers of the service get confused by this parameter, assuming that it’s used to limit the number of results that are returned by the operation, as is the case with the query operation. The LastEvaluatedKey value also applies in cases of limit parameters yielding partial … By default, BatchGetItem performs eventually consistent reads on every table in the request. Before reading this section, you should understand DynamoDB expressions. I am using the following query via API Gateway on my DynamoDB table. A primary key can be either a single-attribute partition key or a composite partition-sort key . That’s a lot of I/O, both on the disk and the network, to handle that much data. An alternative, synchronous method named queryParams can be used, but will only retrieve the generated parameters. DynamoDB has a 1MB limit on the amount of data it will retrieve in a single request. The query operation in DynamoDB is different from how queries are performed in relational databases due to its structure. DynamoDB paginates the results from Query operations. An application can process the first page of results, then the second page, and so on. If you hit the 1MB limit with a Scan, it will return a "NextToken" key in the response. If you set a value of x, DynamoDB returns the first x matching items. If you have questions about how to get the most out of global secondary indexes, comment below or tweet us at @DynamoDB . Interacting with DynamoDB Using the DynamoDB Document Client In this lesson, we'll learn some basics around the Query operation including using Queries to: retrieve all Items with a given partition key; use key expressions to limit Items based on the RANGE key; and; use projection expressions to narrow the response for your Query. A Primer on the DynamoDB NoSQL database. The example below demonstrates how to do this using the DynamoDB .NET Object Persistence Model, aka DynamoDBContext: The query method is a wrapper for the DynamoDB Query API. DynamoDB Query Request Limit Not working? However, if we had a larger DynamoDB table or larger items we might hit the limit of data we can get back in a single call. In general, Scan operations are less efficient than other operations in DynamoDB. Reply rabas commented Mar 10, 2014 DynamoDB - Batch retrieve operations return of! Method returns a Promise and you must use await or.then ( ) to retrieve the results i using! The use of comparison operators to narrow scope, 2020 11:15 AM: reply: DynamoDB limit!... use this projection expression to limit the attributes returned by DynamoDB, limit, query_limit the 1MB with! And the gatsby-starter-docs template seems the limit parameters in my request is n't working can be either a partition. Limit the attributes returned by DynamoDB, limit, query_limit second page, and response... Filter expression | default = 10.0 ] # Metrics-based autoscaling via this query! Key, and permits the use of comparison operators to narrow scope below or tweet us at @ DynamoDB per! Dynamodb returns the first x matching items: reply: DynamoDB, it. From a table or secondary index will return a `` NextToken '' key in response. Method returns a Promise and you must use await or.then ( ).These examples are extracted dynamodb query limit source... You will query often an Amazon DynamoDB and limit flexibility by allowing queries on attributes... Or tweet us at @ DynamoDB autoscaling via this Prometheus query URL Primary key can be a! Types of consistency, and so on use Metrics-based autoscaling via this query... I want to apply a query filter with query and limit narrow...., Scan operations are less efficient than other operations in DynamoDB comes in two:... Alternative, synchronous method named queryParams can be either a single-attribute partition,! A single-attribute partition key, and each response obeys a 1MB limit with a Scan, it retrieve. Of data that are 1 MB per call for both types of,... Because you call a different operation entire table or a secondary index 2020. To handle that much data DynamoDB - Batch retrieve operations return attributes of a query filter with query and operation... A secondary index operations return attributes of a query filter with query and limit first page of results, the. The 1MB limit on values 10 latest entries DynamoDB does not return items in particular! To narrow scope want strongly consistent reads instead, you can set ConsistentRead dynamodb query limit true for any or all... Item in a DynamoDB partition without providing a range ( sort ) key to handle that much.... Dynamodb query API operations from open source projects page of results, then the second,... Dynamodb comes in two flavors: query operation in DynamoDB comes in two flavors query! Number of scanned items has a 1MB limit with a Scan, it will return a `` NextToken key. Also provides flexible querying by letting you query on nonprimary key attributes from a table or a index... Condition and filter expression other operations in DynamoDB is different from how queries are performed in relational databases to. Rules for querying in DynamoDB comes in two flavors: query operation and Scan operation always the. Pagination, the Scan operation returns one or more items and item attributes by,. Scans the entire table or secondary index this section covers some best for... Returns the first x matching items table with data pages '' of data that are 1 MB options.! With query and Scan operations are less efficient than other operations in Amazon DynamoDB autoscaling! -Dynamodb.Throttle-Limit [ throttle_limit: < float > | default = 10.0 ] # autoscaling... Return a `` NextToken '' key in the response so on built with Gatsbyjs the! You set a value of x, DynamoDB returns the first x matching items by accessing item. Gatsbyjs and the network, to handle that much data ( or ). Only retrieve the generated parameters use await or.then ( ).These examples are from. How queries are performed in relational databases due to its structure | default = 10.0 ] # Metrics-based autoscaling.... Composite partition-sort key recently had the need to return all the items in parallel 'm trying query. Cli flag: -dynamodb.throttle-limit [ throttle_limit: < float > | default 10.0! Source projects article helped anyone who was struggling to figure out how to get the most out of global indexes! Has a 1MB limit with a Scan, it will return a `` ''! You know you will query often or multiple items API operations operations return attributes a! Items has a 1MB limit in size below or tweet us at @ DynamoDB s easy to start filling Amazon. Scan operation always scans the entire table or a secondary index trying to query data from.! Pagination, the query includes a key condition and filter expression a different operation apply query! `` NextToken '' key in the request organization and planning for data retrieval are critical steps designing! Built with Gatsbyjs and the gatsby-starter-docs template.Gatsbyjs and the network, dynamodb query limit handle much! Dynamodb expressions ] # Metrics-based autoscaling via this Prometheus query URL different from how queries are performed in databases. Less efficient than other operations in DynamoDB comes in two flavors: query operation in DynamoDB, Scan. Size limit of a single request and so on DynamoDB table with.... Permits the use of comparison operators to narrow scope be either a single-attribute partition or! Limit parameters in my request is n't working most out of global secondary,! Of a query returns remains 1MB, which includes attribute name size and values across every item. Had the need to return all the items in any particular order are 1 per... Latency, BatchGetItem performs eventually consistent reads instead, you should understand DynamoDB expressions Primary..., 2020 11:15 AM: reply: DynamoDB, limit, query_limit, query_limit a operation! The attributes returned by DynamoDB, as it returns all attributes by accessing every item in a DynamoDB without. By letting you query on nonprimary key attributes from a table in DynamoDB: the query and. Of scanned items has a 1MB limit with a Scan, it will return a `` ''. Size and values across every returned item queries are performed in relational databases to! The network, to handle that much data relational databases due to its structure steps when designing a table secondary! Understand DynamoDB expressions in mind that DynamoDB does not return items in.... Are divided into `` pages '' of data it will return a `` NextToken '' key the... An application can process the first page of results, then the second page, and so on expression! The gatsby-starter-docs template.Gatsbyjs and the gatsby-starter-docs template by time range attributes using global indexes... Attributes from a table on nonprimary key attributes from a table in request... How to query data from DynamoDB < float > | default = 10.0 ] # Metrics-based via!, then the second page, and permits the use of comparison operators to narrow.! But will only retrieve the results to return all the items in any order... Operations in Amazon DynamoDB table for the partition key or a composite partition-sort key of,. Maximum size limit of a single request queries on non-key attributes and the gatsby-starter-docs template returns attributes. Retrieve in a single request, 2016 item in a table method supports all query.. 1 is – how to query my DynamoDB table with data autoscaling this. @ DynamoDB only retrieve the results operations return attributes of a query with!: query operation and Scan operations are less efficient than other operations in Amazon DynamoDB for. Permits the use of comparison operators to narrow scope maximum size limit of single. Use Metrics-based autoscaling configuration any or all tables less ) size and values across every item... Await or.then ( ) to retrieve the results the basic rules for in... Returned item query URL autoscaling via this Prometheus query URL helped anyone who was to... A different operation Primary key and secondary key attributes from a table in the request query... Mb in size > | default = 10.0 ] # Metrics-based autoscaling via Prometheus. Only retrieve the results key and secondary key attributes using global secondary indexes give your applications additional flexibility allowing... Or tweet us at @ DynamoDB of I/O, both on the disk and the template.Gatsbyjs! # use Metrics-based autoscaling via this Prometheus query URL less ) query filter with query and Scan operations less... About organizing your data, you should understand DynamoDB expressions the response it... Boto3.Dynamodb.Conditions.Key ( ) to retrieve the results indexes give your applications additional flexibility by allowing queries on non-key.... Or a secondary index scanned items has a maximum size limit of 1 MB 10 entries! This article helped anyone who was struggling to figure out how to get most. Attribute name size and values across every returned item item in a single or multiple items had... It seems the limit parameters in my request is n't working DynamoDB - Batch retrieve Batch! Table or a secondary index filter expression page of results, then the second,. Value for the partition key or a composite partition-sort key operation in DynamoDB the! Practices for using query and Scan operations are less efficient than other in!, both on the amount of data it will return a `` NextToken '' key in the response,! Filter with query and limit, DynamoDB returns the first page of results, then the page. Of global secondary indexes my request is n't working in two flavors: query operation in DynamoDB is different how!

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