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TIBCO® Patterns 6.1.2

# Rules to Handle Predicate Errors

Use the following rules to handle predicate query errors that can occur due to invalid or empty data values:

| • | any expression that encounters an "empty" field value, is assigned the empty score.

| • | any expression that encounters an "invalid" field value, is assigned the invalid score.

| • | By default, the empty and invalid scores are 0.0, except for sub-queries of an RLINK query or Match Case query, where they default to -1.0.

| • | You can explicitly reset these scores to any valid score value or the special -1.0 score, to reject the record.

| • | An empty or invalid constant in a predicate query will always cause the query to be rejected with an error.

Note: This differs from Filtering with Predicates where it is possible to have predicate expression evaluation continue with "empty" values.

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