---
schema_version: "1"
id: 8ad26493f3e3068f223ee02402fe89f1d04738115c457086c256fa75e0f5407e
title: How Do Query Activities Work with Field-Level Encryption?
collection: admin
version: current
locale: en-us
portal_url: https://docs.salesforce.com/admin/current/en-us/mktg/264-0-0/mc_overview_faq_max_query_activities_field_level_encryption.md
canonical_url: https://help.salesforce.com/s/articleView?id=mktg.mc_overview_faq_max_query_activities_field_level_encryption.htm&release=264.0.0&type=5
source_site: help.salesforce.com
content_type: documentation
content_hash: c58fb0e55e5ef7875db382160f0df05c9acf5f8afefd37b668c2e441f949a68b
description: You can use plain text values to filter, copy, or overwrite data in other data extensions with matching field types. Marketing Cloud Engagement can perform AMPscript functions on unencrypted data in a data extension, but can’t encrypt or decrypt manipulated data.
products:
  - Marketing
  - Marketing Cloud Engagement
release: "264"
---
# How Do Query Activities Work with Field-Level Encryption?

You can use plain text values to filter, copy, or overwrite data in other data extensions with matching field types. Marketing Cloud Engagement can perform AMPscript functions on unencrypted data in a data extension, but can’t encrypt or decrypt manipulated data.