Reference documentation and code samples for the BigQuery Data Policy Service V1beta1 API class Google::Cloud::Bigquery::DataPolicies::V1beta1::DataMaskingPolicy.
The data masking policy that is used to specify data masking rule.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Hard to understand","hardToUnderstand","thumb-down"],["Incorrect information or sample code","incorrectInformationOrSampleCode","thumb-down"],["Missing the information/samples I need","missingTheInformationSamplesINeed","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-09-09 UTC."],[],[],null,["# BigQuery Data Policy Service V1beta1 API - Class Google::Cloud::Bigquery::DataPolicies::V1beta1::DataMaskingPolicy (v0.8.0)\n\nVersion latestkeyboard_arrow_down\n\n- [0.8.0 (latest)](/ruby/docs/reference/google-cloud-bigquery-data_policies-v1beta1/latest/Google-Cloud-Bigquery-DataPolicies-V1beta1-DataMaskingPolicy)\n- [0.7.1](/ruby/docs/reference/google-cloud-bigquery-data_policies-v1beta1/0.7.1/Google-Cloud-Bigquery-DataPolicies-V1beta1-DataMaskingPolicy)\n- [0.6.0](/ruby/docs/reference/google-cloud-bigquery-data_policies-v1beta1/0.6.0/Google-Cloud-Bigquery-DataPolicies-V1beta1-DataMaskingPolicy)\n- [0.5.1](/ruby/docs/reference/google-cloud-bigquery-data_policies-v1beta1/0.5.1/Google-Cloud-Bigquery-DataPolicies-V1beta1-DataMaskingPolicy)\n- [0.4.2](/ruby/docs/reference/google-cloud-bigquery-data_policies-v1beta1/0.4.2/Google-Cloud-Bigquery-DataPolicies-V1beta1-DataMaskingPolicy)\n- [0.3.0](/ruby/docs/reference/google-cloud-bigquery-data_policies-v1beta1/0.3.0/Google-Cloud-Bigquery-DataPolicies-V1beta1-DataMaskingPolicy)\n- [0.2.1](/ruby/docs/reference/google-cloud-bigquery-data_policies-v1beta1/0.2.1/Google-Cloud-Bigquery-DataPolicies-V1beta1-DataMaskingPolicy)\n- [0.1.0](/ruby/docs/reference/google-cloud-bigquery-data_policies-v1beta1/0.1.0/Google-Cloud-Bigquery-DataPolicies-V1beta1-DataMaskingPolicy) \nReference documentation and code samples for the BigQuery Data Policy Service V1beta1 API class Google::Cloud::Bigquery::DataPolicies::V1beta1::DataMaskingPolicy.\n\nThe data masking policy that is used to specify data masking rule. \n\nInherits\n--------\n\n- Object \n\nExtended By\n-----------\n\n- Google::Protobuf::MessageExts::ClassMethods \n\nIncludes\n--------\n\n- Google::Protobuf::MessageExts\n\nMethods\n-------\n\n### #predefined_expression\n\n def predefined_expression() -\u003e ::Google::Cloud::Bigquery::DataPolicies::V1beta1::DataMaskingPolicy::PredefinedExpression\n\n**Returns**\n\n- ([::Google::Cloud::Bigquery::DataPolicies::V1beta1::DataMaskingPolicy::PredefinedExpression](./Google-Cloud-Bigquery-DataPolicies-V1beta1-DataMaskingPolicy-PredefinedExpression)) --- A predefined masking expression.\n\n### #predefined_expression=\n\n def predefined_expression=(value) -\u003e ::Google::Cloud::Bigquery::DataPolicies::V1beta1::DataMaskingPolicy::PredefinedExpression\n\n**Parameter**\n\n- **value** ([::Google::Cloud::Bigquery::DataPolicies::V1beta1::DataMaskingPolicy::PredefinedExpression](./Google-Cloud-Bigquery-DataPolicies-V1beta1-DataMaskingPolicy-PredefinedExpression)) --- A predefined masking expression. \n**Returns**\n\n- ([::Google::Cloud::Bigquery::DataPolicies::V1beta1::DataMaskingPolicy::PredefinedExpression](./Google-Cloud-Bigquery-DataPolicies-V1beta1-DataMaskingPolicy-PredefinedExpression)) --- A predefined masking expression."]]