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38 lines
1.5 KiB
C++
38 lines
1.5 KiB
C++
/* Copyright (c) 2006, 2010, Oracle and/or its affiliates. All rights reserved.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; version 2 of the License.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
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#ifndef FILESORT_INCLUDED
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#define FILESORT_INCLUDED
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class SQL_SELECT;
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#include "my_global.h" /* uint, uchar */
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#include "my_base.h" /* ha_rows */
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class SQL_SELECT;
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class THD;
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struct TABLE;
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typedef struct st_sort_field SORT_FIELD;
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ha_rows filesort(THD *thd, TABLE *table, st_sort_field *sortorder,
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uint s_length, SQL_SELECT *select,
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ha_rows max_rows, bool sort_positions,
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ha_rows *examined_rows);
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void filesort_free_buffers(TABLE *table, bool full);
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double get_merge_many_buffs_cost(uint *buffer, uint last_n_elems,
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int elem_size);
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void change_double_for_sort(double nr,uchar *to);
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#endif /* FILESORT_INCLUDED */
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