Adjacent_span_spanset Adjacent_spanset_span Adjacent_spanset_spanset Adjacent_spanset_value Adjacent_value_spanset Contained_span_spanset Contained_spanset_span Contained_spanset_spanset Contained_value_spanset Contains_span_spanset Contains_spanset_span Contains_spanset_spanset Contains_spanset_value Distance_span_spanset Distance_spanset_span Distance_spanset_spanset Distance_spanset_value Distance_value_spanset Intersection_span_spanset Intersection_spanset_span Intersection_spanset_spanset Intersection_spanset_value Intersection_value_spanset Left_span_spanset Left_spanset_span Left_spanset_spanset Left_spanset_value Left_value_spanset Minus_span_spanset Minus_spanset_span Minus_spanset_spanset Minus_spanset_value Minus_value_spanset Overlaps_span_spanset Overlaps_spanset_span Overlaps_spanset_spanset Overleft_span_spanset Overleft_spanset_span Overleft_spanset_spanset Overleft_spanset_value Overleft_value_spanset Overright_span_spanset Overright_spanset_span Overright_spanset_spanset Overright_spanset_value Overright_value_spanset Period_tprecision Periodset_tprecision Right_span_spanset Right_spanset_span Right_spanset_spanset Right_spanset_value Right_value_spanset Timestamp_tprecision Union_span_spanset Union_spanset_span Union_spanset_spanset Union_spanset_value Union_value_spanset

Left_span_spanset() PGDLLEXPORT Datum Left_span_spanset ( PG_FUNCTION_ARGS  ) Return true if a span is strictly to the left of a span set. SQL Function: span_left() SQL Operator: <<#