Set_cmp Set_eq Set_ge Set_gt Set_le Set_lt Set_ne Span_cmp Span_eq Span_ge Span_gt Span_le Span_lt Span_ne Spanset_cmp Spanset_eq Spanset_ge Spanset_gt Spanset_le Spanset_lt Spanset_ne

Span_lt() Datum Span_lt ( PG_FUNCTION_ARGS  ) Return true if the first span is less than the second one @sqlfn span_lt() SQL Operator: <