pg_get_nd_stats_by_name()

static ND_STATS * pg_get_nd_stats_by_name ( const Oid  table_oid, const text *  att_text, int  mode, bool  only_parent  )

static

Pull the stats object from the PgSQL system catalogs.

The debugging functions are taking human input (table names) and columns, so we have to look those up first. In case of parent tables whith INHERITS, when "only_parent" is true this function only searchs for stats in the parent table ignoring any statistic collected from the children.

Definition at line 992 of file gserialized_estimate.c.

{
        const char *att_name = text_to_cstring(att_text);
        AttrNumber att_num;
 
        /* We know the name? Look up the num */
        if ( att_text )
        {
                /* Get the attribute number */
                att_num = get_attnum(table_oid, att_name);
                if  ( ! att_num ) {
                        elog(ERROR, "attribute \"%s\" does not exist", att_name);
                        return NULL;
                }
        }
        else
        {
                elog(ERROR, "attribute name is null");
                return NULL;
        }
 
        return pg_get_nd_stats(table_oid, att_num, mode, only_parent);
}

References pg_get_nd_stats(), and text_to_cstring().

Referenced by _postgis_gserialized_joinsel(), _postgis_gserialized_sel(), _postgis_gserialized_stats(), and gserialized_estimated_extent().

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