Functions for gathering statistics from temporal point columns. More...
#include <postgres.h>#include <fmgr.h>#include <catalog/pg_type.h>#include <commands/vacuum.h>#include <liblwgeom.h>
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Data Structures | |
| struct | ND_BOX_T |
| N-dimensional box type for calculations, to avoid doing explicit axis conversions from GBOX in all calculations at every step. More... | |
| struct | ND_IBOX_T |
| N-dimensional box index type. More... | |
| struct | ND_STATS_T |
| N-dimensional statistics structure. More... | |
Macros | |
| #define | ND_DIMS 4 |
| The maximum number of dimensions our code can handle. More... | |
Typedefs | |
| typedef struct ND_BOX_T | ND_BOX |
| N-dimensional box type for calculations, to avoid doing explicit axis conversions from GBOX in all calculations at every step. More... | |
| typedef struct ND_IBOX_T | ND_IBOX |
| N-dimensional box index type. More... | |
| typedef struct ND_STATS_T | ND_STATS |
| N-dimensional statistics structure. More... | |
Functions | |
| int | nd_box_init (ND_BOX *a) |
| Zero out an ND_BOX. More... | |
| int | nd_box_init_bounds (ND_BOX *a) |
| Prepare an ND_BOX for bounds calculation: set the maxes to the smallest thing possible and the mins to the largest. More... | |
| int | nd_box_merge (const ND_BOX *source, ND_BOX *target) |
| Expand the bounds of target to include source. More... | |
| void | nd_box_from_gbox (const GBOX *gbox, ND_BOX *nd_box) |
| Set the values of an ND_BOX from a GBOX. More... | |
| int | nd_increment (ND_IBOX *ibox, int ndims, int *counter) |
| Given an n-d index array (counter), and a domain to increment it in (ibox) increment it by one, unless it's already at the max of the domain, in which case return false. More... | |
| int | nd_box_overlap (const ND_STATS *nd_stats, const ND_BOX *nd_box, ND_IBOX *nd_ibox) |
| What stats cells overlap with this ND_BOX? Put the lowest cell addresses in ND_IBOX->min and the highest in ND_IBOX->max. More... | |
| int | nd_box_intersects (const ND_BOX *a, const ND_BOX *b, int ndims) |
| Returns true if ND_BOX a overlaps b, false otherwise. More... | |
| double | nd_box_ratio_overlaps (const ND_BOX *b1, const ND_BOX *b2, int ndims) |
| Returns the proportion of b2 that is covered by b1. More... | |
| void | gserialized_compute_stats (VacAttrStats *stats, AnalyzeAttrFetchFunc fetchfunc, int sample_rows, double total_rows, int mode) |
| The gserialized_analyze_nd sets this function as a callback on the stats object when called by the ANALYZE command. More... | |
| Datum | tpoint_analyze (PG_FUNCTION_ARGS) |
| Compute the statistics for temporal point columns. More... | |
Detailed Description
Functions for gathering statistics from temporal point columns.
