fieldlen

You can use plugin functions in the `filter` clause to filter data. You can also use functions that return a numeric value in the `sort` clause to sort data.

If you use a document field as a function parameter, you must create the field as an index or a property as specified in the function's documentation.

1. Usage details:

fieldlen(field_name)

2. Parameters:

field_name: The name of the field to evaluate. The field can be a literal or an array.

3. Return value:

Returns the length of the field content as an int64 integer. If the field is an array, the function returns the number of array elements.

4. Scenarios:

Scenario 1: Return documents where the usr_name field is not empty.

query=default:'keyword'&&filter=fieldlen(usr_name)>0

5. Notes:

• The field specified as a parameter must be created as a property.