1 /*-------------------------------------------------------------------------
2  *
3  * attoptcache.h
4  *	  Attribute options cache.
5  *
6  * Portions Copyright (c) 1996-2019, 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 */
29