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databricks.labs.dqx.rule_fingerprint

Rule fingerprint functions for deterministic hashing of DQ rules and rule sets.

compute_rule_set_fingerprint​

def compute_rule_set_fingerprint(checks: list[DQRule]) -> str

Compute a deterministic SHA-256 hash of the complete rule set.

The hash is order-independent: individual rule fingerprints are sorted before combining. Expects expanded rules (for_each_column already expanded via deserialization).

Arguments:

  • checks - List of DQRule objects (expanded form).

Returns:

A hex-encoded SHA-256 hash string representing the entire rule set.

compute_rule_set_fingerprint_by_metadata​

def compute_rule_set_fingerprint_by_metadata(
        checks: list[dict],
        custom_checks: dict[str, Callable] | None = None) -> str

Compute rule set fingerprint from metadata. Thin wrapper: deserialize then fingerprint.

Ensures for_each_column is expanded via deserialization so compact and expanded metadata produce the same fingerprint.

Arguments:

  • checks - List of check dictionaries (may contain for_each_column).
  • custom_checks - Optional mapping of custom function names to callables.

Returns:

A hex-encoded SHA-256 hash string representing the entire rule set.