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drizzled/sql_sort.h
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#ifndef DRIZZLED_SQL_SORT_H
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#define DRIZZLED_SQL_SORT_H
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#include "mysys/my_sys.h"
 
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#include <unistd.h>
 
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#include "drizzled/base.h"
 
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#include "drizzled/qsort_cmp.h"
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typedef struct st_sort_field SORT_FIELD;
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typedef struct st_io_cache IO_CACHE;
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class Field;
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class Table;
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/* Defines used by filesort and uniques */
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#define MERGEBUFF               7
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} SORT_ADDON_FIELD;
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typedef struct st_buffpek {             /* Struktur om sorteringsbuffrarna */
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  my_off_t file_pos;                    /* Where we are in the sort file */
 
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  off_t file_pos;                       /* Where we are in the sort file */
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  unsigned char *base,*key;                     /* key pointers */
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  ha_rows count;                        /* Number of rows in table */
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  ulong mem_count;                      /* numbers of keys in memory */
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  ulong max_keys;                       /* Max keys in buffert */
 
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  size_t mem_count;                     /* numbers of keys in memory */
 
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  size_t max_keys;                      /* Max keys in buffert */
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} BUFFPEK;
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struct BUFFPEK_COMPARE_CONTEXT