selection

const (
	DoesNotExist     Operator = "!"
	Equals           Operator = "="
	DoubleEquals     Operator = "=="
	PartialEquals    Operator = "~"
	In               Operator = "in"
	NotEquals        Operator = "!="
	NotPartialEquals Operator = "!~"
	NotIn            Operator = "notin"
	Exists           Operator = "exists"
	GreaterThan      Operator = "gt"
	LessThan         Operator = "lt"
)