time_aggfuncs.h

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#ifndef __TIME_AGGFUNCS_H__
#define __TIME_AGGFUNCS_H__
 
/* MEOS */
#include "general/span.h"
#include "general/skiplist.h"
 
/*****************************************************************************/
 
extern Datum datum_sum_int32(Datum l, Datum r);
extern TimestampTz *timestamp_tagg(TimestampTz *times1, int count1,
  TimestampTz *times2, int count2, int *newcount);
extern Span **period_tagg(Span **periods1, int count1, Span **periods2,
  int count2, int *newcount);
 
extern SkipList *tstzset_tagg_transfn(SkipList *state, const Set *ts);
extern SkipList *period_tagg_transfn(SkipList *state, const Span *p);
extern SkipList *periodset_tagg_transfn(SkipList *state, const SpanSet *ps);
extern void ensure_same_timetype_skiplist(SkipList *state, uint8 subtype);
extern SkipList *time_tagg_combinefn(SkipList *state1, SkipList *state2);
 
/*****************************************************************************/
 
#endif