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/* * AM-callable functions for BRIN indexes * * Portions Copyright (c) 1996-2016, PostgreSQL Global Development Group * Portions Copyright (c) 1994, Regents of the University of California * * IDENTIFICATION * src/include/access/brin.h */ #ifndef BRIN_H #define BRIN_H #include "fmgr.h" #include "nodes/execnodes.h" #include "utils/relcache.h" /* * prototypes for functions in brin.c (external entry points for BRIN) */ extern Datum brinhandler(PG_FUNCTION_ARGS); extern Datum brin_summarize_new_values(PG_FUNCTION_ARGS); /* * Storage type for BRIN's reloptions */ typedef struct BrinOptions { int32 vl_len_; /* varlena header (do not touch directly!) */ BlockNumber pagesPerRange; } BrinOptions; #define BRIN_DEFAULT_PAGES_PER_RANGE 128 #define BrinGetPagesPerRange(relation) \ ((relation)->rd_options ? \ ((BrinOptions *) (relation)->rd_options)->pagesPerRange : \ BRIN_DEFAULT_PAGES_PER_RANGE) #endif /* BRIN_H */