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Merge bk-internal:/home/bk/mysql-5.0

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into serg.mylan:/usr/home/serg/Abk/mysql-5.0
This commit is contained in:
unknown 2005-02-22 17:02:16 +01:00
commit 61f2abba64
3 changed files with 7 additions and 3 deletions
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2
mysql-test/r/index_merge_ror_cpk.result
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@ -59,7 +59,7 @@ id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ref key1 key1 4 const 100 Using where
explain select * from t1 where pk1 < 7500 and key1 = 10;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 index_merge PRIMARY,key1 key1,PRIMARY 4,4 NULL 38 Using intersect(key1,PRIMARY); Using where
1 SIMPLE t1 index_merge PRIMARY,key1 key1,PRIMARY 4,4 NULL ROWS Using intersect(key1,PRIMARY); Using where
explain select * from t1 where pktail1ok=1 and key1=10;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 index_merge key1,pktail1ok key1,pktail1ok 4,4 NULL 1 Using intersect(key1,pktail1ok); Using where

1
mysql-test/t/index_merge_ror_cpk.test
View File

@ -63,6 +63,7 @@ select pk1,pk2 from t1 where key1 = 10 and key2=10 and 2*pk1+1 < 2*96+1;
# Verify that CPK is always used for index intersection scans
# (this is because it is used as a filter, not for retrieval)
explain select * from t1 where badkey=1 and key1=10;
--replace_result 38 ROWS 37 ROWS
explain select * from t1 where pk1 < 7500 and key1 = 10;
# Verify that keys with 'tails' of PK members are ok.

7
sql/opt_range.cc
View File

@ -2562,7 +2562,8 @@ static double ror_scan_selectivity(const ROR_INTERSECT_INFO *info,
char *key_ptr= (char*) key_val;
SEL_ARG *sel_arg, *tuple_arg= NULL;
bool cur_covered;
bool prev_covered= bitmap_is_set(&info->covered_fields, key_part->fieldnr);
bool prev_covered= (bitmap_is_set(&info->covered_fields,
key_part->fieldnr))? 1 : 0;
key_range min_range;
key_range max_range;
min_range.key= (byte*) key_val;
@ -2575,7 +2576,9 @@ static double ror_scan_selectivity(const ROR_INTERSECT_INFO *info,
for(i= 0, sel_arg= scan->sel_arg; sel_arg;
i++, sel_arg= sel_arg->next_key_part)
{
cur_covered= bitmap_is_set(&info->covered_fields, (key_part + i)->fieldnr);
DBUG_PRINT("info",("sel_arg step"));
cur_covered= (bitmap_is_set(&info->covered_fields,
(key_part + i)->fieldnr))? 1 : 0;
if (cur_covered != prev_covered)
{
/* create (part1val, ..., part{n-1}val) tuple. */