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‎powerapps-docs/developer/common-data-service/TOC.yml

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href: column-comparison.md
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- name: FetchXML search item limit
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href: quick-find-limit.md
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- name: Improve FetchXML request performance
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href: fetchxml-performance.md
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- name: "Use SQL to query data (Preview)"
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href: cds-sql-query.md
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- name: Saved Queries

‎powerapps-docs/developer/common-data-service/fetchxml-performance.md

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---
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title: Improve FetchXML request performance | Microsoft Docs
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description: Learn how developers can improve FetchXML request performance when using Common Data Service.
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author: NHelgren
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manager: annbe
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ms.service: powerapps
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ms.topic: article
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ms.date: 09/28/2020
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ms.author: nhelgren
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ms.reviewer: "pehecke"
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search.audienceType:
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- developer
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search.app:
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- PowerApps
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- D365CE
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---
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# Improve FetchXML request performance
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An option available in FetchXML requests called *LateMaterialize* allows you to break up such
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requests into smaller more usable segments which can improve the performance of long running FetchXML requests.
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> [!NOTE]
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> Performance improvements depend on the data distribution for each
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> participating entity and linked entity. Late materialization may not always
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> provide a performance benefit. It is best used if you are experiencing
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> performance issues with your existing fetch request.
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Executing a traditional fetch for a given number of the top entity records will pull all
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the columns in the select list that meet the filter criteria. Let’s say you are
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pulling the top 500 records on an entity that has 100 columns and 100K rows
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that meet the filter criteria, this request can cause issues in two ways:
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- The 99.5K rows will pull all columns, even though you only need to populate
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the select list for 500 rows when returning to the client.
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- Query Optimizer can generate an arbitrary order when retrieving the child
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columns, resulting in an undesired data order.
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Using `LateMaterialize` allows you to create a fetch that will:
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- First pull only the primary ID of the top number of records specified.
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- Select only the columns of data needed based on the primary IDs that were
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retrieved. For example, where only 5 columns are needed for display in the form.
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By pulling only the needed data after the primary IDs are collected, the
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retrieval is much faster as data that is not needed for the current operation is
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excluded.
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This is most beneficial when:
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- The entity you are querying has one or more links to other entities for column data.
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- There are many columns in the entity.
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- The entity contains logical attributes.
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## Syntax
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```xml
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<fetch version="1.0" output-format="xml-platform" latematerialize="true"
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 mapping="logical" distinct="true">
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<entity name="[entity]">​
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<attribute name="[attribute]" />
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​
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<link-entity name="[entity]" from="[linked entity]" to="[linked entityid]"
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link-type="outer" alias="[alias]">​
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<attribute name="[name of linked entity column]" />​
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</link-entity>
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​
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<filter type=[filter type]>​
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<condition attribute="[column]" operator="[operator]" value="[value]"/> ​
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</filter>​
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</entity>
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​
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</fetch>
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```
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## Sample
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```XML
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<fetch version="1.0" output-format="xml-platform" latematerialize="true"
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  mapping="logical" distinct="true">
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<entity name="account">​
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<attribute name="accountnumber" />​
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<attribute name="createdby" />​
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<attribute name="ownerid" />​
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<link-entity name="account" from="accountid" to="parentaccountid"
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link-type="outer" alias="oaccount">​
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<attribute name="createdby" />
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​
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<link-entity name="account" from="accountid" to="accountid" link-type="outer"
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alias="oaccount1">​
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<attribute name="createdby" />​
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<attribute name="accountid" />​
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<attribute name="name" />​
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</link-entity>​
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</link-entity>​
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<link-entity name="account" from="accountid" to="accountid" link-type="outer"
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alias="oaccount2"/>
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​
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<filter type='and'>​
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<condition attribute="statecode" operator="eq" value="2"/> ​
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</filter>​
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</entity>​
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</fetch>
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```
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### See Also
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[Use FetchXML to construct a query](use-fetchxml-construct-query.md)

‎powerapps-docs/maker/canvas-apps/controls/control-microphone.md

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ms.topic: reference
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ms.custom: canvas
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ms.reviewer: tapanm
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ms.date: 06/12/2020
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ms.date: 09/28/2020
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ms.author: chmoncay
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search.audienceType:
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- maker
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> [!NOTE]
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> The microphone control is supported only on Microsoft Edge based on Chromium, Chrome, and Firefox browsers; and Android and iOS devices. All other browsers and platforms will show a warning that some features of the app won't work.
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## Considerations for Teams Mobile
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The following conditions apply when using the Microphone control in apps created using Power Apps on Teams Mobile:
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1. The audio format for microphone recordings in Teams will always be *AAC* with a file extension of .MP4.
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1. Teams has its own recording experience. Hence, the microphone control inside apps created using Power Apps will be disabled during the recording period.
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1. Microphone recordings are limited to a maximum duration of 10 minutes.
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## Key properties
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**Audio** – The audio clip captured when the user records with the device's microphone.

‎powerapps-docs/maker/canvas-apps/powerapps-custom-visual.md

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ms.custom: canvas
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ms.reviewer: tapanm
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ms.date: 09/22/2020
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ms.author: tapanm
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ms.author: pemikkel
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search.audienceType:
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- maker
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