snowflake-create-join-policy

name	snowflake-create-join-policy
description	Consult Snowflake CREATE JOIN POLICY parameter reference before generating any CREATE JOIN POLICY DDL.

Before writing a CREATE JOIN POLICY statement:

1. Read references/parameters.md to review all available parameters and their defaults.
2. For each parameter, decide whether the user's request implies a non-default value.
3. Include only the parameters that differ from the default or that the user explicitly requested.
4. Never use CREATE OR REPLACE — always use CREATE JOIN POLICY IF NOT EXISTS.
5. The policy body must call JOIN_CONSTRAINT(JOIN_REQUIRED => <boolean_expression>). Use TRUE to enforce that queries must join to another table; use FALSE to allow unrestricted queries (equivalent to no policy).
6. The allowed join columns are configured when the policy is assigned to a table or view (ALTER TABLE ... SET JOIN POLICY), not in the CREATE statement itself.
7. The policy body cannot reference user-defined functions, tables, or views.