Module: Google::Cloud::Bigquery::DataPolicies::V1::DataMaskingPolicy::PredefinedExpression

Defined in:: proto_docs/google/cloud/bigquery/datapolicies/v1/datapolicy.rb

Overview

The available masking rules. Learn more here: https://cloud.google.com/bigquery/docs/column-data-masking-intro#masking_options.

Constant Summary collapse

PREDEFINED_EXPRESSION_UNSPECIFIED = Default, unspecified predefined expression. No masking will take place since no expression is specified.

SHA256 = Masking expression to replace data with SHA-256 hash.

ALWAYS_NULL = Masking expression to replace data with NULLs.

DEFAULT_MASKING_VALUE = Masking expression to replace data with their default masking values. The default masking values for each type listed as below: STRING: "" BYTES: b'' INTEGER: 0 FLOAT: 0.0 NUMERIC: 0 BOOLEAN: FALSE TIMESTAMP: 1970-01-01 00:00:00 UTC DATE: 1970-01-01 TIME: 00:00:00 DATETIME: 1970-01-01T00:00:00 GEOGRAPHY: POINT(0 0) BIGNUMERIC: 0 ARRAY: [] STRUCT: NOT_APPLICABLE JSON: NULL

LAST_FOUR_CHARACTERS = Masking expression shows the last four characters of text. The masking behavior is as follows: If text length > 4 characters: Replace text with XXXXX, append last four characters of original text. If text length <= 4 characters: Apply SHA-256 hash.

FIRST_FOUR_CHARACTERS = Masking expression shows the first four characters of text. The masking behavior is as follows: If text length > 4 characters: Replace text with XXXXX, prepend first four characters of original text. If text length <= 4 characters: Apply SHA-256 hash.

EMAIL_MASK = Masking expression for email addresses. The masking behavior is as follows: Syntax-valid email address: Replace username with XXXXX. For example, [email protected] becomes [email protected]. Syntax-invalid email address: Apply SHA-256 hash. For more information, see Email mask.

DATE_YEAR_MASK = Masking expression to only show the year of Date, DateTime and TimeStamp. For example, with the year 2076: DATE : 2076-01-01 DATETIME : 2076-01-01T00:00:00 TIMESTAMP : 2076-01-01 00:00:00 UTC Truncation occurs according to the UTC time zone. To change this, adjust the default time zone using the time_zone system variable. For more information, see the System variables reference.