FieldSort specifies the sorting configuration for a field in a search index.
Data structure
message FieldSort {
optional string field_name = 1;
optional SortOrder order = 2;
optional SortMode mode = 3;
optional NestedFilter nested_filter = 4;
optional bytes missing_value = 5; //encoded as SQLVariant
optional string missing_field = 6;
}Parameter | Type | Required | Description |
field_name | string | Yes | The name of the field. |
order | No | The sorting method. You can sort fields in the ascending or descending order. By default, fields are sorted in the ascending order. | |
mode | No | The sorting method that is used when the field has multiple values. This parameter is required only when the field type is array. Note For more information about array types, see ARRAY and Nested field types. | |
nested_filter | No | The filter condition of fields in the nested data type. This parameter is required only if the fields are of the nested data type. | |
missing_value | bytes | No | The default value that is used when the specified field does not exist. The value must be encoded in PlainBuffer. For more information, see PlainBuffer. |
missing_field | string | No | The sorting field that is used when the specified field does not exist. |