After_tbox_tbox Before_tbox_tbox Left_tbox_tbox Overafter_tbox_tbox Overbefore_tbox_tbox Overleft_tbox_tbox Overright_tbox_tbox Right_tbox_tbox

Left_tbox_tbox() Datum Left_tbox_tbox ( PG_FUNCTION_ARGS  ) Return true if the first temporal box is to the left of the second one @sqlfn tbox_left()