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327.1.2
by Brian Aker
Commiting next pass of Table class cleanup. |
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#ifndef DRIZZLED_SJ_TMP_TABLE_H
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#define DRIZZLED_SJ_TMP_TABLE_H
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#include <drizzled/server_includes.h> |
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#include "table.h" |
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/*
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Describes use of one temporary table to weed out join duplicates.
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The temporar
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Used to
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- create a temp table
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- when we reach the weed-out tab, walk through rowid-ed tabs and
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and copy rowids.
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For each table we need
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- rowid offset
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- null bit address.
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*/
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class SJ_TMP_TABLE : public Sql_alloc |
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{
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public: |
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/* Array of pointers to tables that should be "used" */
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class TAB |
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{
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public: |
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struct st_join_table *join_tab; |
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uint rowid_offset; |
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ushort null_byte; |
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uchar null_bit; |
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};
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TAB *tabs; |
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TAB *tabs_end; |
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uint null_bits; |
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uint null_bytes; |
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uint rowid_len; |
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327.1.5
by Brian Aker
Refactor around classes. TABLE_LIST has been factored out of table.h |
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Table *tmp_table; |
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327.1.2
by Brian Aker
Commiting next pass of Table class cleanup. |
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MI_COLUMNDEF *start_recinfo; |
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MI_COLUMNDEF *recinfo; |
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/* Pointer to next table (next->start_idx > this->end_idx) */
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SJ_TMP_TABLE *next; |
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};
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327.1.5
by Brian Aker
Refactor around classes. TABLE_LIST has been factored out of table.h |
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Table *create_duplicate_weedout_tmp_table(THD *thd, |
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327.1.2
by Brian Aker
Commiting next pass of Table class cleanup. |
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uint uniq_tuple_length_arg, |
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SJ_TMP_TABLE *sjtbl); |
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#endif /* DRIZZLED_SJ_TMP_TABLE_H */ |