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MWL #21: "index_merge: non-ROR intersection".

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The second (final) patch.
This commit is contained in:
Igor Babaev
2010-12-01 23:39:39 -08:00
parent 7970b3346a
commit 80377bbf6d
27 changed files with 3237 additions and 505 deletions
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10
sql/sql_class.h
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@@ -2966,6 +2966,7 @@ class Unique :public Sql_alloc
IO_CACHE file;
TREE tree;
uchar *record_pointers;
ulong filtered_out_elems;
bool flush();
uint size;
uint full_size;
@@ -2991,8 +2992,15 @@ public:
void close_for_expansion() { tree.flag= TREE_ONLY_DUPS; }
bool get(TABLE *table);
inline static double get_search_cost(uint tree_elems, uint compare_factor)
{
return log((double) tree_elems) / (compare_factor * M_LN2);
}
static double get_use_cost(uint *buffer, uint nkeys, uint key_size,
ulonglong max_in_memory_size);
ulonglong max_in_memory_size, uint compare_factor,
bool intersect_fl, bool *in_memory);
inline static int get_cost_calc_buff_size(ulong nkeys, uint key_size,
ulonglong max_in_memory_size)
{