granicus.if.org Git - postgresql/blob - src/include/utils/attoptcache.h

   1 /*-------------------------------------------------------------------------
   2  *
   3  * attoptcache.h
   4  *        Attribute options cache.
   5  *
   6  * Portions Copyright (c) 1996-2017, PostgreSQL Global Development Group
   7  * Portions Copyright (c) 1994, Regents of the University of California
   8  *
   9  * src/include/utils/attoptcache.h
  10  *
  11  *-------------------------------------------------------------------------
  12  */
  13 #ifndef ATTOPTCACHE_H
  14 #define ATTOPTCACHE_H
  15
  16 /*
  17  * Attribute options.
  18  */
  19 typedef struct AttributeOpts
  20 {
  21         int32           vl_len_;                /* varlena header (do not touch directly!) */
  22         float8          n_distinct;
  23         float8          n_distinct_inherited;
  24 } AttributeOpts;
  25
  26 AttributeOpts *get_attribute_options(Oid spcid, int attnum);
  27
  28 #endif                                                  /* ATTOPTCACHE_H */