Functions for gathering statistics from time type columns. More...

#include <postgres.h>
#include <fmgr.h>
#include <catalog/pg_type.h>
#include <commands/vacuum.h>
#include "period.h"

Include dependency graph for time_analyze.h:

This graph shows which files directly or indirectly include this file:

Macros
#define	STATISTIC_KIND_PERIOD_BOUNDS_HISTOGRAM 8

#define	STATISTIC_KIND_PERIOD_LENGTH_HISTOGRAM 9

Functions
int	period_bound_qsort_cmp (const void a1, const void a2)
	Comparison function for sorting period bounds. More...

int	float8_qsort_cmp (const void a1, const void a2)
	Comparison function for sorting float8 values, used for period lengths. More...

void	period_compute_stats1 (VacAttrStats stats, int non_null_cnt, int slot_idx, PeriodBound lowers, PeriodBound uppers, float8 *lengths)
	Compute statistics for period columns and for the time dimension of all temporal types whose subtype is not instant. More...

Datum	period_analyze (PG_FUNCTION_ARGS)
	Compute statistics for period columns. More...

Datum	timestampset_analyze (PG_FUNCTION_ARGS)
	Compute statistics for timestamp set columns. More...

Datum	periodset_analyze (PG_FUNCTION_ARGS)
	Compute statistics for period set columns. More...

Detailed Description

Functions for gathering statistics from time type columns.

Macros