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| Datum | gserialized_gist_joinsel (PG_FUNCTION_ARGS) |
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| Datum | gserialized_gist_joinsel_2d (PG_FUNCTION_ARGS) |
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| Datum | gserialized_gist_joinsel_nd (PG_FUNCTION_ARGS) |
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| Datum | gserialized_gist_sel (PG_FUNCTION_ARGS) |
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| Datum | gserialized_gist_sel_2d (PG_FUNCTION_ARGS) |
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| Datum | gserialized_gist_sel_nd (PG_FUNCTION_ARGS) |
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| Datum | gserialized_analyze_nd (PG_FUNCTION_ARGS) |
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| Datum | gserialized_estimated_extent (PG_FUNCTION_ARGS) |
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| Datum | _postgis_gserialized_sel (PG_FUNCTION_ARGS) |
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| Datum | _postgis_gserialized_joinsel (PG_FUNCTION_ARGS) |
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| Datum | _postgis_gserialized_stats (PG_FUNCTION_ARGS) |
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| Datum | geometry_estimated_extent (PG_FUNCTION_ARGS) |
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| static int | gbox_ndims (const GBOX *gbox) |
| | Given that geodetic boxes are X/Y/Z regardless of the underlying geometry dimensionality and other boxes are guided by HAS_Z/HAS_M in their dimesionality, we have a little utility function to make it easy. More...
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| static int | text_p_get_mode (const text *txt) |
| | Utility function to see if the first letter of the mode argument is 'N'. More...
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| static int | cmp_int (const void *a, const void *b) |
| | Integer comparison function for qsort. More...
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| static int | range_quintile (int *vals, int nvals) |
| | The difference between the fourth and first quintile values, the "inter-quintile range". More...
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| static double | total_double (const double *vals, int nvals) |
| | Given double array, return sum of values. More...
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| static int | nd_stats_value_index (const ND_STATS *stats, int *indexes) |
| | Given a position in the n-d histogram (i,j,k) return the position in the 1-d values array. More...
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| static char * | nd_box_to_json (const ND_BOX *nd_box, int ndims) |
| | Convert an ND_BOX to a JSON string for printing. More...
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| static char * | nd_stats_to_json (const ND_STATS *nd_stats) |
| | Convert an ND_STATS to a JSON representation for external use. More...
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| static int | nd_box_merge (const ND_BOX *source, ND_BOX *target) |
| | Create a printable view of the ND_STATS histogram. More...
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| static int | nd_box_init (ND_BOX *a) |
| | Zero out an ND_BOX. More...
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| static 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...
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| static void | nd_box_from_gbox (const GBOX *gbox, ND_BOX *nd_box) |
| | Set the values of an ND_BOX from a GBOX. More...
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| static int | nd_box_intersects (const ND_BOX *a, const ND_BOX *b, int ndims) |
| | Return TRUE if ND_BOX a overlaps b, false otherwise. More...
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| static int | nd_box_contains (const ND_BOX *a, const ND_BOX *b, int ndims) |
| | Return TRUE if ND_BOX a contains b, false otherwise. More...
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| static int | nd_box_expand (ND_BOX *nd_box, double expansion_factor) |
| | Expand an ND_BOX ever so slightly. More...
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| static 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...
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| static double | nd_box_ratio (const ND_BOX *b1, const ND_BOX *b2, int ndims) |
| | Returns the proportion of b2 that is covered by b1. More...
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| static int | nd_box_array_distribution (const ND_BOX **nd_boxes, int num_boxes, const ND_BOX *extent, int ndims, double *distribution) |
| | Calculate how much a set of boxes is homogenously distributed or contentrated within one dimension, returning the range_quintile of of the overlap counts per cell in a uniform partition of the extent of the dimension. More...
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| static 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...
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| static ND_STATS * | pg_nd_stats_from_tuple (HeapTuple stats_tuple, int mode) |
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| static ND_STATS * | pg_get_nd_stats (const Oid table_oid, AttrNumber att_num, int mode, bool only_parent) |
| | Pull the stats object from the PgSQL system catalogs. More...
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| static ND_STATS * | pg_get_nd_stats_by_name (const Oid table_oid, const text *att_text, int mode, bool only_parent) |
| | Pull the stats object from the PgSQL system catalogs. More...
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| static float8 | estimate_join_selectivity (const ND_STATS *s1, const ND_STATS *s2) |
| | Given two statistics histograms, what is the selectivity of a join driven by the && or &&& operator? More...
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| | PG_FUNCTION_INFO_V1 (gserialized_gist_joinsel_nd) |
| | For (geometry &&& geometry) and (geography && geography) we call into the N-D mode. More...
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| | PG_FUNCTION_INFO_V1 (gserialized_gist_joinsel_2d) |
| | For (geometry && geometry) we call into the 2-D mode. More...
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| | PG_FUNCTION_INFO_V1 (gserialized_gist_joinsel) |
| | Join selectivity of the && operator. More...
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| static void | compute_gserialized_stats_mode (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...
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| static void | compute_gserialized_stats (VacAttrStats *stats, AnalyzeAttrFetchFunc fetchfunc, int sample_rows, double total_rows) |
| | In order to do useful selectivity calculations in both 2-D and N-D modes, we actually have to generate two stats objects, one for 2-D and one for N-D. More...
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| | PG_FUNCTION_INFO_V1 (gserialized_analyze_nd) |
| | This function will be called when the ANALYZE command is run on a column of the "geometry" or "geography" type. More...
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| static float8 | estimate_selectivity (const GBOX *box, const ND_STATS *nd_stats, int mode) |
| | This function returns an estimate of the selectivity of a search GBOX by looking at data in the ND_STATS structure. More...
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| | PG_FUNCTION_INFO_V1 (_postgis_gserialized_stats) |
| | Utility function to print the statistics information for a given table/column in JSON. More...
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| | PG_FUNCTION_INFO_V1 (_postgis_gserialized_sel) |
| | Utility function to read the calculated selectivity for a given search box and table/column. More...
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| | PG_FUNCTION_INFO_V1 (_postgis_gserialized_joinsel) |
| | Utility function to read the calculated join selectivity for a pair of tables. More...
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| | PG_FUNCTION_INFO_V1 (gserialized_gist_sel_2d) |
| | For (geometry && geometry) we call into the 2-D mode. More...
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| | PG_FUNCTION_INFO_V1 (gserialized_gist_sel_nd) |
| | For (geometry &&& geometry) and (geography && geography) we call into the N-D mode. More...
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| | PG_FUNCTION_INFO_V1 (gserialized_gist_sel) |
| | This function should return an estimation of the number of rows returned by a query involving an overlap check ( it's the restrict function for the && operator ) More...
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| | PG_FUNCTION_INFO_V1 (gserialized_estimated_extent) |
| | Return the estimated extent of the table looking at gathered statistics (or NULL if no statistics have been gathered). More...
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| | PG_FUNCTION_INFO_V1 (geometry_estimated_extent) |
| | Return the estimated extent of the table looking at gathered statistics (or NULL if no statistics have been gathered). More...
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