PredefinedExpression(value)The available masking rules. Learn more here: https://cloud.google.com/bigquery/docs/column-data-masking-intro#masking_options.
Values: PREDEFINED_EXPRESSION_UNSPECIFIED (0): Default, unspecified predefined expression. No masking will take place since no expression is specified. SHA256 (3): Masking expression to replace data with SHA-256 hash. ALWAYS_NULL (5): Masking expression to replace data with NULLs. DEFAULT_MASKING_VALUE (7): 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: 0001-01-01 00:00:00 UTC
- DATE: 0001-01-01
- TIME: 00:00:00
- DATETIME: 0001-01-01T00:00:00
- GEOGRAPHY: POINT(0 0)
- BIGNUMERIC: 0
- ARRAY: []
- STRUCT: NOT_APPLICABLE
- JSON: NULL