gserialized_analyze_nd()

Datum gserialized_analyze_nd

(

PG_FUNCTION_ARGS

)

Definition at line 1898 of file gserialized_estimate.c.

{
        VacAttrStats *stats = (VacAttrStats *)PG_GETARG_POINTER(0);
        Form_pg_attribute attr = stats->attr;
 
        POSTGIS_DEBUG(2, "gserialized_analyze_nd called");
 
        /* If the attstattarget column is negative, use the default value */
        /* NB: it is okay to scribble on stats->attr since it's a copy */
        if (attr->attstattarget < 0)
                attr->attstattarget = default_statistics_target;
 
        POSTGIS_DEBUGF(3, " attribute stat target: %d", attr->attstattarget);
 
        /* Setup the minimum rows and the algorithm function.
         * 300 matches the default value set in
         * postgresql/src/backend/commands/analyze.c */
        stats->minrows = 300 * stats->attr->attstattarget;
        stats->compute_stats = compute_gserialized_stats;
 
        POSTGIS_DEBUGF(3, " minrows: %d", stats->minrows);
 
        /* Indicate we are done successfully */
        PG_RETURN_BOOL(true);
}

References compute_gserialized_stats().

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