attoptcache.h

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/*-------------------------------------------------------------------------
 *
 * attoptcache.h
 *    Attribute options cache.
 *
 * Portions Copyright (c) 1996-2024, PostgreSQL Global Development Group
 * Portions Copyright (c) 1994, Regents of the University of California
 *
 * src/include/utils/attoptcache.h
 *
 *-------------------------------------------------------------------------
 */
#ifndef ATTOPTCACHE_H
#define ATTOPTCACHE_H
 
/*
 * Attribute options.
 */
typedef struct AttributeOpts
{
    int32       vl_len_;        /* varlena header (do not touch directly!) */
    float8      n_distinct;
    float8      n_distinct_inherited;
} AttributeOpts;
 
extern AttributeOpts *get_attribute_options(Oid attrelid, int attnum);
 
#endif                          /* ATTOPTCACHE_H */