query property

The query string that matches against the full text of the document and the searchable properties.

The query partially supports Google AIP style syntax. Specifically, the query supports literals, logical operators, negation operators, comparison operators, and functions. Literals: A bare literal value (examples: "42", "Hugo") is a value to be matched against. It searches over the full text of the document and the searchable properties. Logical operators: "AND", "and", "OR", and "or" are binary logical operators (example: "engineer OR developer"). Negation operators: "NOT" and "!" are negation operators (example: "NOT software"). Comparison operators: support the binary comparison operators =, !=, <, >, <= and >= for string, numeric, enum, boolean. Also support like operator ~~ for string. It provides semantic search functionality by parsing, stemming and doing synonyms expansion against the input query. To specify a property in the query, the left hand side expression in the comparison must be the property ID including the parent. The right hand side must be literals. For example: ""projects/123/locations/us".property_a < 1" matches results whose "property_a" is less than 1 in project 123 and us location. The literals and comparison expression can be connected in a single query (example: "software engineer "projects/123/locations/us".salary > 100"). Functions: supported functions are LOWER([property_name]) to perform a case insensitive match and EMPTY([property_name]) to filter on the existence of a key. Support nested expressions connected using parenthesis and logical operators. The default logical operators is AND if there is no operators between expressions. The query can be used with other filters e.g. time_filters and folder_name_filter. They are connected with AND operator under the hood. The maximum number of allowed characters is 255.