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* Undo of range optimizer fix from previous changeset

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* Fixed test results.
This commit is contained in:
sergefp@mysql.com
2004-05-29 17:50:05 +04:00
parent dff98a8ef7
commit 742b759df7
4 changed files with 16 additions and 13 deletions
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24
sql/opt_range.cc
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@ -1610,17 +1610,6 @@ int SQL_SELECT::test_quick_select(THD *thd, key_map keys_to_use,
}
param.key_parts_end=key_parts;
/* Calculate cost of full index read for the shortest covering index */
if (!head->used_keys.is_clear_all())
{
int key_for_use= find_shortest_key(head, &head->used_keys);
double key_read_time= get_index_only_read_time(&param, records,
key_for_use);
DBUG_PRINT("info", ("'all'+'using index' scan will be using key %d, "
"read time %g", key_for_use, key_read_time));
if (key_read_time < read_time)
read_time= key_read_time;
}
if ((tree=get_mm_tree(&param,cond)))
{
@ -1683,6 +1672,19 @@ int SQL_SELECT::test_quick_select(THD *thd, key_map keys_to_use,
SEL_IMERGE *imerge;
TABLE_READ_PLAN *best_conj_trp= NULL, *new_conj_trp;
LINT_INIT(new_conj_trp); /* no empty index_merge lists possible */
/* Calculate cost of full index read for the shortest covering index */
if (!head->used_keys.is_clear_all())
{
int key_for_use= find_shortest_key(head, &head->used_keys);
double key_read_time= get_index_only_read_time(&param, records,
key_for_use);
DBUG_PRINT("info", ("'all'+'using index' scan will be using key %d, "
"read time %g", key_for_use, key_read_time));
if (key_read_time < read_time)
read_time= key_read_time;
}
DBUG_PRINT("info",("No range reads possible,"
" trying to construct index_merge"));
List_iterator_fast<SEL_IMERGE> it(tree->merges);