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ConfiForms plugin uses 'Lucene like' syntax for expressions, supports grouping using parenthesis. Supports filtering for expressions that start with a wild-card. Supports filtering per field as well as free text search (filter to match against any field value).
Operators AND and OR are case-sensitive!
Supports not notation, to filter records that do not match the given filter: '!' is used for that. Example: !f1:[empty] - will look for records where f1 field value is not empty (has some value)
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