Snowflake: parse masking policy statement family by sabir-akhadov-localstack · Pull Request #14 · localstack/datafusion-sqlparser-rs

sabir-akhadov-localstack · 2026-07-29T11:23:06Z

Adds the Snowflake masking-policy statement family, mirroring the existing row-access-policy family (ADR 070 §1, LAV-1362).

Statements

CREATE [OR REPLACE] MASKING POLICY [IF NOT EXISTS] <name> AS (<arg> <type>[, …]) RETURNS <type> -> <body> [COMMENT = '…'] (multi-arg conditional-masking signatures included)
ALTER MASKING POLICY [IF EXISTS] <name> { SET BODY -> <expr> | RENAME TO <name> | SET COMMENT = '…' | UNSET COMMENT }
DROP MASKING POLICY [IF EXISTS] <name>
DESC[RIBE] MASKING POLICY <name>
SHOW MASKING POLICIES [LIKE '…'] [IN <scope>]
ALTER TABLE <t> {MODIFY|ALTER} COLUMN <c> { SET MASKING POLICY <p> [USING (…)] [FORCE] | UNSET MASKING POLICY }
The same column op on ALTER VIEW (new Statement::AlterViewColumn)
Column-level [WITH] MASKING POLICY <p> [USING (…)] in CREATE VIEW column lists already parses via the shared ColumnPolicy::MaskingPolicy option (verified with a test)

New Statement::{CreateMaskingPolicy, AlterMaskingPolicy, DropMaskingPolicy, DescribeMaskingPolicy, ShowMaskingPolicies, AlterViewColumn}
New AlterMaskingPolicyOperation enum
New AlterColumnOperation::{SetMaskingPolicy, UnsetMaskingPolicy} variants
New BODY keyword

Fork-side tests mirror the row-access-policy coverage and round-trip via verified_stmt / one_statement_parses_to.

🤖 Generated with Claude Code

Snowflake: parse masking policy statement family

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