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Implementation of the MWL#247: Make the optimizer use extended keys.

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The main patch.
.
This commit is contained in:
Igor Babaev 2011-12-31 02:25:57 -08:00
parent 1c47e1ca0d
commit b6b5f9fabe
13 changed files with 10204 additions and 72 deletions
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8997
mysql-test/include/dbt3_s001.inc Normal file
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566
mysql-test/r/innodb_ext_key.result Normal file
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@ -0,0 +1,566 @@
DROP TABLE IF EXISTS t1,t2,t3,t4;
DROP DATABASE IF EXISTS dbt3_s001;
SET SESSION STORAGE_ENGINE='InnoDB';
CREATE DATABASE dbt3_s001;
use dbt3_s001;
set @save_ext_key_optimizer_switch=@@optimizer_switch;
set optimizer_switch='extended_keys=off';
explain
select count(*) from lineitem where l_orderkey=130 and l_shipdate='1992-07-01';
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE lineitem ref PRIMARY,i_l_shipdate,i_l_orderkey,i_l_orderkey_quantity PRIMARY 4 const 5 Using where
flush status;
select count(*) from lineitem where l_orderkey=130 and l_shipdate='1992-07-01';
count(*)
1
show status like 'handler_read%';
Variable_name Value
Handler_read_first 0
Handler_read_key 1
Handler_read_next 5
Handler_read_prev 0
Handler_read_rnd 0
Handler_read_rnd_next 0
set optimizer_switch='extended_keys=on';
explain
select count(*) from lineitem where l_orderkey=130 and l_shipdate='1992-07-01';
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE lineitem ref PRIMARY,i_l_shipdate,i_l_orderkey,i_l_orderkey_quantity i_l_shipdate 8 const,const 1 Using index
flush status;
select count(*) from lineitem where l_orderkey=130 and l_shipdate='1992-07-01';
count(*)
1
show status like 'handler_read%';
Variable_name Value
Handler_read_first 0
Handler_read_key 1
Handler_read_next 1
Handler_read_prev 0
Handler_read_rnd 0
Handler_read_rnd_next 0
set optimizer_switch='extended_keys=off';
explain
select count(*) from lineitem
where l_orderkey=130 and l_linenumber=2 and l_shipdate='1992-07-01';
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE lineitem const PRIMARY,i_l_shipdate,i_l_orderkey,i_l_orderkey_quantity PRIMARY 8 const,const 1
flush status;
select count(*) from lineitem
where l_orderkey=130 and l_linenumber=2 and l_shipdate='1992-07-01';
count(*)
1
show status like 'handler_read%';
Variable_name Value
Handler_read_first 0
Handler_read_key 1
Handler_read_next 0
Handler_read_prev 0
Handler_read_rnd 0
Handler_read_rnd_next 0
set optimizer_switch='extended_keys=on';
explain
select count(*) from lineitem
where l_orderkey=130 and l_linenumber=2 and l_shipdate='1992-07-01';
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE lineitem const PRIMARY,i_l_shipdate,i_l_orderkey,i_l_orderkey_quantity i_l_shipdate 12 const,const,const 1 Using index
flush status;
select count(*) from lineitem
where l_orderkey=130 and l_linenumber=2 and l_shipdate='1992-07-01';
count(*)
1
show status like 'handler_read%';
Variable_name Value
Handler_read_first 0
Handler_read_key 1
Handler_read_next 0
Handler_read_prev 0
Handler_read_rnd 0
Handler_read_rnd_next 0
set optimizer_switch='extended_keys=off';
explain
select count(*) from lineitem
where l_shipdate='1992-07-01' and l_orderkey between 1 and 1000;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE lineitem ref PRIMARY,i_l_shipdate,i_l_orderkey,i_l_orderkey_quantity i_l_shipdate 4 const 6 Using where; Using index
flush status;
select count(*) from lineitem
where l_shipdate='1992-07-01' and l_orderkey between 1 and 1000;
count(*)
1
show status like 'handler_read%';
Variable_name Value
Handler_read_first 0
Handler_read_key 1
Handler_read_next 6
Handler_read_prev 0
Handler_read_rnd 0
Handler_read_rnd_next 0
set optimizer_switch='extended_keys=on';
explain
select count(*) from lineitem
where l_shipdate='1992-07-01' and l_orderkey between 1 and 1000;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE lineitem range PRIMARY,i_l_shipdate,i_l_orderkey,i_l_orderkey_quantity i_l_shipdate 8 NULL 1 Using where; Using index
flush status;
select count(*) from lineitem
where l_shipdate='1992-07-01' and l_orderkey between 1 and 1000;
count(*)
1
show status like 'handler_read%';
Variable_name Value
Handler_read_first 0
Handler_read_key 1
Handler_read_next 1
Handler_read_prev 0
Handler_read_rnd 0
Handler_read_rnd_next 0
set optimizer_switch='extended_keys=off';
explain
select l_orderkey, l_linenumber from lineitem
where l_shipdate='1992-07-01' and l_orderkey between 1001 and 2000;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE lineitem ref PRIMARY,i_l_shipdate,i_l_orderkey,i_l_orderkey_quantity i_l_shipdate 4 const 6 Using where; Using index
flush status;
select l_orderkey, l_linenumber from lineitem
where l_shipdate='1992-07-01' and l_orderkey between 1001 and 2000;
l_orderkey l_linenumber
1088 3
1217 1
1221 3
show status like 'handler_read%';
Variable_name Value
Handler_read_first 0
Handler_read_key 1
Handler_read_next 6
Handler_read_prev 0
Handler_read_rnd 0
Handler_read_rnd_next 0
set optimizer_switch='extended_keys=on';
explain
select l_orderkey, l_linenumber from lineitem
where l_shipdate='1992-07-01' and l_orderkey between 1001 and 2000;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE lineitem range PRIMARY,i_l_shipdate,i_l_orderkey,i_l_orderkey_quantity i_l_shipdate 8 NULL 3 Using where; Using index
flush status;
select l_orderkey, l_linenumber from lineitem
where l_shipdate='1992-07-01' and l_orderkey between 1001 and 2000;
l_orderkey l_linenumber
1088 3
1217 1
1221 3
show status like 'handler_read%';
Variable_name Value
Handler_read_first 0
Handler_read_key 1
Handler_read_next 3
Handler_read_prev 0
Handler_read_rnd 0
Handler_read_rnd_next 0
set optimizer_switch='extended_keys=off';
explain
select min(l_orderkey) from lineitem where l_shipdate='1992-07-01';
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE lineitem ref i_l_shipdate i_l_shipdate 4 const 6 Using index
flush status;
select min(l_orderkey) from lineitem where l_shipdate='1992-07-01';
min(l_orderkey)
130
show status like 'handler_read%';
Variable_name Value
Handler_read_first 0
Handler_read_key 1
Handler_read_next 6
Handler_read_prev 0
Handler_read_rnd 0
Handler_read_rnd_next 0
set optimizer_switch='extended_keys=on';
explain
select min(l_orderkey) from lineitem where l_shipdate='1992-07-01';
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Select tables optimized away
flush status;
select min(l_orderkey) from lineitem where l_shipdate='1992-07-01';
min(l_orderkey)
130
show status like 'handler_read%';
Variable_name Value
Handler_read_first 0
Handler_read_key 1
Handler_read_next 0
Handler_read_prev 0
Handler_read_rnd 0
Handler_read_rnd_next 0
set optimizer_switch='extended_keys=off';
explain
select min(l_orderkey) from lineitem
where l_shipdate='1992-07-01' and l_orderkey between 1001 and 2000;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE lineitem ref PRIMARY,i_l_shipdate,i_l_orderkey,i_l_orderkey_quantity i_l_shipdate 4 const 6 Using where; Using index
flush status;
select min(l_orderkey) from lineitem
where l_shipdate='1992-07-01' and l_orderkey between 1001 and 2000;
min(l_orderkey)
1088
show status like 'handler_read%';
Variable_name Value
Handler_read_first 0
Handler_read_key 1
Handler_read_next 6
Handler_read_prev 0
Handler_read_rnd 0
Handler_read_rnd_next 0
set optimizer_switch='extended_keys=on';
explain
select min(l_orderkey) from lineitem
where l_shipdate='1992-07-01' and l_orderkey between 1001 and 2000;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Select tables optimized away
flush status;
select min(l_orderkey) from lineitem
where l_shipdate='1992-07-01' and l_orderkey between 1001 and 2000;
min(l_orderkey)
1088
show status like 'handler_read%';
Variable_name Value
Handler_read_first 0
Handler_read_key 1
Handler_read_next 0
Handler_read_prev 0
Handler_read_rnd 0
Handler_read_rnd_next 0
set optimizer_switch='extended_keys=off';
explain
select max(l_linenumber) from lineitem
where l_shipdate='1992-07-01' and l_orderkey=130;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE lineitem ref PRIMARY,i_l_shipdate,i_l_orderkey,i_l_orderkey_quantity PRIMARY 4 const 5 Using where
flush status;
select max(l_linenumber) from lineitem
where l_shipdate='1992-07-01' and l_orderkey=130;
max(l_linenumber)
2
show status like 'handler_read%';
Variable_name Value
Handler_read_first 0
Handler_read_key 1
Handler_read_next 5
Handler_read_prev 0
Handler_read_rnd 0
Handler_read_rnd_next 0
set optimizer_switch='extended_keys=on';
explain
select max(l_linenumber) from lineitem
where l_shipdate='1992-07-01' and l_orderkey=130;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Select tables optimized away
flush status;
select max(l_linenumber) from lineitem
where l_shipdate='1992-07-01' and l_orderkey=130;
max(l_linenumber)
2
show status like 'handler_read%';
Variable_name Value
Handler_read_first 0
Handler_read_key 1
Handler_read_next 0
Handler_read_prev 0
Handler_read_rnd 0
Handler_read_rnd_next 0
set optimizer_switch='extended_keys=off';
explain
select l_orderkey, l_linenumber
from lineitem use index (i_l_shipdate, i_l_receiptdate)
where l_shipdate='1992-07-01' and l_orderkey=130
or l_receiptdate='1992-07-01' and l_orderkey=5603;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE lineitem index_merge i_l_shipdate,i_l_receiptdate i_l_shipdate,i_l_receiptdate 4,4 NULL 9 Using union(i_l_shipdate,i_l_receiptdate); Using where
flush status;
select l_orderkey, l_linenumber
from lineitem use index (i_l_shipdate, i_l_receiptdate)
where l_shipdate='1992-07-01' and l_orderkey=130
or l_receiptdate='1992-07-01' and l_orderkey=5603;
l_orderkey l_linenumber
130 2
5603 2
show status like 'handler_read%';
Variable_name Value
Handler_read_first 0
Handler_read_key 2
Handler_read_next 9
Handler_read_prev 0
Handler_read_rnd 9
Handler_read_rnd_next 0
set optimizer_switch='extended_keys=on';
explain
select l_orderkey, l_linenumber
from lineitem use index (i_l_shipdate, i_l_receiptdate)
where l_shipdate='1992-07-01' and l_orderkey=130
or l_receiptdate='1992-07-01' and l_orderkey=5603;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE lineitem index_merge i_l_shipdate,i_l_receiptdate i_l_shipdate,i_l_receiptdate 8,8 NULL 2 Using sort_union(i_l_shipdate,i_l_receiptdate); Using where
flush status;
select l_orderkey, l_linenumber
from lineitem use index (i_l_shipdate, i_l_receiptdate)
where l_shipdate='1992-07-01' and l_orderkey=130
or l_receiptdate='1992-07-01' and l_orderkey=5603;
l_orderkey l_linenumber
130 2
5603 2
show status like 'handler_read%';
Variable_name Value
Handler_read_first 0
Handler_read_key 2
Handler_read_next 2
Handler_read_prev 0
Handler_read_rnd 2
Handler_read_rnd_next 0
set optimizer_switch='extended_keys=off';
explain
select l_orderkey, l_linenumber
from lineitem use index (i_l_shipdate, i_l_receiptdate)
where l_shipdate='1992-07-01' and l_orderkey between 1 and 1000
or l_receiptdate='1992-07-01' and l_orderkey between 5001 and 6000;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE lineitem index_merge i_l_shipdate,i_l_receiptdate i_l_shipdate,i_l_receiptdate 4,4 NULL 9 Using union(i_l_shipdate,i_l_receiptdate); Using where
flush status;
select l_orderkey, l_linenumber
from lineitem use index (i_l_shipdate, i_l_receiptdate)
where l_shipdate='1992-07-01' and l_orderkey between 1 and 1000
or l_receiptdate='1992-07-01' and l_orderkey between 5001 and 6000;
l_orderkey l_linenumber
130 2
5603 2
5959 3
show status like 'handler_read%';
Variable_name Value
Handler_read_first 0
Handler_read_key 2
Handler_read_next 9
Handler_read_prev 0
Handler_read_rnd 9
Handler_read_rnd_next 0
set optimizer_switch='extended_keys=on';
explain
select l_orderkey, l_linenumber
from lineitem use index (i_l_shipdate, i_l_receiptdate)
where l_shipdate='1992-07-01' and l_orderkey between 1 and 1000
or l_receiptdate='1992-07-01' and l_orderkey between 5001 and 6000;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE lineitem index_merge i_l_shipdate,i_l_receiptdate i_l_shipdate,i_l_receiptdate 8,8 NULL 3 Using sort_union(i_l_shipdate,i_l_receiptdate); Using where
flush status;
select l_orderkey, l_linenumber
from lineitem use index (i_l_shipdate, i_l_receiptdate)
where l_shipdate='1992-07-01' and l_orderkey between 1 and 1000
or l_receiptdate='1992-07-01' and l_orderkey between 5001 and 6000;
l_orderkey l_linenumber
130 2
5603 2
5959 3
show status like 'handler_read%';
Variable_name Value
Handler_read_first 0
Handler_read_key 2
Handler_read_next 3
Handler_read_prev 0
Handler_read_rnd 3
Handler_read_rnd_next 0
set optimizer_switch='extended_keys=off';
explain
select l_orderkey, l_linenumber from lineitem
where l_shipdate='1992-07-01' and l_orderkey between 1 and 1000
or l_receiptdate='1992-07-01' and l_orderkey between 5001 and 6000;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE lineitem index_merge PRIMARY,i_l_shipdate,i_l_receiptdate,i_l_orderkey,i_l_orderkey_quantity i_l_shipdate,PRIMARY,i_l_receiptdate,PRIMARY 4,4,4,4 NULL 2 Using union(intersect(i_l_shipdate,PRIMARY),intersect(i_l_receiptdate,PRIMARY)); Using where
flush status;
select l_orderkey, l_linenumber from lineitem
where l_shipdate='1992-07-01' and l_orderkey between 1 and 1000
or l_receiptdate='1992-07-01' and l_orderkey between 5001 and 6000;
l_orderkey l_linenumber
130 2
5603 2
5959 3
show status like 'handler_read%';
Variable_name Value
Handler_read_first 0
Handler_read_key 2
Handler_read_next 9
Handler_read_prev 0
Handler_read_rnd 3
Handler_read_rnd_next 0
set optimizer_switch='extended_keys=on';
explain
select l_orderkey, l_linenumber from lineitem
where l_shipdate='1992-07-01' and l_orderkey between 1 and 1000
or l_receiptdate='1992-07-01' and l_orderkey between 5001 and 6000;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE lineitem index_merge PRIMARY,i_l_shipdate,i_l_receiptdate,i_l_orderkey,i_l_orderkey_quantity i_l_shipdate,i_l_receiptdate 8,8 NULL 3 Using sort_union(i_l_shipdate,i_l_receiptdate); Using where
flush status;
select l_orderkey, l_linenumber from lineitem
where l_shipdate='1992-07-01' and l_orderkey between 1 and 1000
or l_receiptdate='1992-07-01' and l_orderkey between 5001 and 6000;
l_orderkey l_linenumber
130 2
5603 2
5959 3
show status like 'handler_read%';
Variable_name Value
Handler_read_first 0
Handler_read_key 2
Handler_read_next 3
Handler_read_prev 0
Handler_read_rnd 3
Handler_read_rnd_next 0
set optimizer_switch='extended_keys=off';
explain
select max(l_orderkey) from lineitem
where l_partkey between 1 and 10 group by l_partkey;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE lineitem range i_l_suppkey_partkey,i_l_partkey i_l_partkey 5 NULL # Using where; Using index
flush status;
select max(l_orderkey) from lineitem
where l_partkey between 1 and 10 group by l_partkey;
max(l_orderkey)
5984
5957
5892
5856
5959
5957
5794
5894
5859
5632
show status like 'handler_read%';
Variable_name Value
Handler_read_first 0
Handler_read_key 1
Handler_read_next 294
Handler_read_prev 0
Handler_read_rnd 0
Handler_read_rnd_next 0
set optimizer_switch='extended_keys=on';
explain
select max(l_orderkey) from lineitem
where l_partkey between 1 and 10 group by l_partkey;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE lineitem range i_l_suppkey_partkey,i_l_partkey i_l_partkey 5 NULL # Using where; Using index for group-by
flush status;
select max(l_orderkey) from lineitem
where l_partkey between 1 and 10 group by l_partkey;
max(l_orderkey)
5984
5957
5892
5856
5959
5957
5794
5894
5859
5632
show status like 'handler_read%';
Variable_name Value
Handler_read_first 0
Handler_read_key 21
Handler_read_next 0
Handler_read_prev 0
Handler_read_rnd 0
Handler_read_rnd_next 0
set optimizer_switch='extended_keys=off';
explain
select max(l_orderkey) from lineitem
where l_suppkey in (1,4) group by l_suppkey;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE lineitem range i_l_suppkey i_l_suppkey 5 NULL # Using where; Using index
flush status;
select max(l_orderkey) from lineitem
where l_suppkey in (1,4) group by l_suppkey;
max(l_orderkey)
5988
5984
show status like 'handler_read%';
Variable_name Value
Handler_read_first 0
Handler_read_key 2
Handler_read_next 1230
Handler_read_prev 0
Handler_read_rnd 0
Handler_read_rnd_next 0
set optimizer_switch='extended_keys=on';
explain
select max(l_orderkey) from lineitem
where l_suppkey in (1,4) group by l_suppkey;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE lineitem range i_l_suppkey i_l_suppkey 5 NULL # Using where; Using index for group-by
flush status;
select max(l_orderkey) from lineitem
where l_suppkey in (1,4) group by l_suppkey;
max(l_orderkey)
5988
5984
show status like 'handler_read%';
Variable_name Value
Handler_read_first 0
Handler_read_key 6
Handler_read_next 0
Handler_read_prev 0
Handler_read_rnd 0
Handler_read_rnd_next 0
create index i_p_retailprice on part(p_retailprice);
set optimizer_switch='extended_keys=off';
explain
select o_orderkey, p_partkey
from part use index (i_p_retailprice),
lineitem use index (i_l_partkey), orders
where p_retailprice > 1100 and o_orderdate='1997-01-01'
and o_orderkey=l_orderkey and p_partkey=l_partkey;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE part range i_p_retailprice i_p_retailprice 9 NULL # Using where; Using index
1 SIMPLE orders ref PRIMARY,i_o_orderdate i_o_orderdate 4 const # Using index
1 SIMPLE lineitem ref i_l_partkey i_l_partkey 5 dbt3_s001.part.p_partkey # Using where; Using index
flush status;
select o_orderkey, p_partkey
from part use index (i_p_retailprice),
lineitem use index (i_l_partkey), orders
where p_retailprice > 1100 and o_orderdate='1997-01-01'
and o_orderkey=l_orderkey and p_partkey=l_partkey;
o_orderkey p_partkey
5895 200
show status like 'handler_read%';
Variable_name Value
Handler_read_first 0
Handler_read_key 3
Handler_read_next 26
Handler_read_prev 0
Handler_read_rnd 0
Handler_read_rnd_next 0
set optimizer_switch='extended_keys=on';
explain
select o_orderkey, p_partkey
from part use index (i_p_retailprice),
lineitem use index (i_l_partkey), orders
where p_retailprice > 1100 and o_orderdate='1997-01-01'
and o_orderkey=l_orderkey and p_partkey=l_partkey;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE part range i_p_retailprice i_p_retailprice 9 NULL # Using where; Using index
1 SIMPLE orders ref PRIMARY,i_o_orderdate i_o_orderdate 4 const # Using index
1 SIMPLE lineitem ref i_l_partkey i_l_partkey 9 dbt3_s001.part.p_partkey,dbt3_s001.orders.o_orderkey # Using index
flush status;
select o_orderkey, p_partkey
from part use index (i_p_retailprice),
lineitem use index (i_l_partkey), orders
where p_retailprice > 1100 and o_orderdate='1997-01-01'
and o_orderkey=l_orderkey and p_partkey=l_partkey;
o_orderkey p_partkey
5895 200
show status like 'handler_read%';
Variable_name Value
Handler_read_first 0
Handler_read_key 3
Handler_read_next 3
Handler_read_prev 0
Handler_read_rnd 0
Handler_read_rnd_next 0
set optimizer_switch=@save_ext_key_optimizer_switch;
DROP DATABASE dbt3_s001;
SET SESSION STORAGE_ENGINE=DEFAULT;

36
mysql-test/r/optimizer_switch.result
View file

@ -4,19 +4,19 @@
#
select @@optimizer_switch;
@@optimizer_switch
index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,index_merge_sort_intersection=off,index_condition_pushdown=off,derived_merge=off,derived_with_keys=off,firstmatch=off,loosescan=off,materialization=off,in_to_exists=on,semijoin=off,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=off,mrr=off,mrr_cost_based=off,mrr_sort_keys=off,outer_join_with_cache=off,semijoin_with_cache=off,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=off
index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,index_merge_sort_intersection=off,index_condition_pushdown=off,derived_merge=off,derived_with_keys=off,firstmatch=off,loosescan=off,materialization=off,in_to_exists=on,semijoin=off,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=off,mrr=off,mrr_cost_based=off,mrr_sort_keys=off,outer_join_with_cache=off,semijoin_with_cache=off,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=off,extended_keys=off
set optimizer_switch='index_merge=off,index_merge_union=off';
select @@optimizer_switch;
@@optimizer_switch
index_merge=off,index_merge_union=off,index_merge_sort_union=on,index_merge_intersection=on,index_merge_sort_intersection=off,index_condition_pushdown=off,derived_merge=off,derived_with_keys=off,firstmatch=off,loosescan=off,materialization=off,in_to_exists=on,semijoin=off,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=off,mrr=off,mrr_cost_based=off,mrr_sort_keys=off,outer_join_with_cache=off,semijoin_with_cache=off,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=off
index_merge=off,index_merge_union=off,index_merge_sort_union=on,index_merge_intersection=on,index_merge_sort_intersection=off,index_condition_pushdown=off,derived_merge=off,derived_with_keys=off,firstmatch=off,loosescan=off,materialization=off,in_to_exists=on,semijoin=off,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=off,mrr=off,mrr_cost_based=off,mrr_sort_keys=off,outer_join_with_cache=off,semijoin_with_cache=off,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=off,extended_keys=off
set optimizer_switch='index_merge_union=on';
select @@optimizer_switch;
@@optimizer_switch
index_merge=off,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,index_merge_sort_intersection=off,index_condition_pushdown=off,derived_merge=off,derived_with_keys=off,firstmatch=off,loosescan=off,materialization=off,in_to_exists=on,semijoin=off,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=off,mrr=off,mrr_cost_based=off,mrr_sort_keys=off,outer_join_with_cache=off,semijoin_with_cache=off,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=off
index_merge=off,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,index_merge_sort_intersection=off,index_condition_pushdown=off,derived_merge=off,derived_with_keys=off,firstmatch=off,loosescan=off,materialization=off,in_to_exists=on,semijoin=off,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=off,mrr=off,mrr_cost_based=off,mrr_sort_keys=off,outer_join_with_cache=off,semijoin_with_cache=off,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=off,extended_keys=off
set optimizer_switch='default,index_merge_sort_union=off';
select @@optimizer_switch;
@@optimizer_switch
index_merge=on,index_merge_union=on,index_merge_sort_union=off,index_merge_intersection=on,index_merge_sort_intersection=off,index_condition_pushdown=off,derived_merge=off,derived_with_keys=off,firstmatch=off,loosescan=off,materialization=off,in_to_exists=on,semijoin=off,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=off,mrr=off,mrr_cost_based=off,mrr_sort_keys=off,outer_join_with_cache=off,semijoin_with_cache=off,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=off
index_merge=on,index_merge_union=on,index_merge_sort_union=off,index_merge_intersection=on,index_merge_sort_intersection=off,index_condition_pushdown=off,derived_merge=off,derived_with_keys=off,firstmatch=off,loosescan=off,materialization=off,in_to_exists=on,semijoin=off,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=off,mrr=off,mrr_cost_based=off,mrr_sort_keys=off,outer_join_with_cache=off,semijoin_with_cache=off,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=off,extended_keys=off
set optimizer_switch=4;
ERROR 42000: Variable 'optimizer_switch' can't be set to the value of '4'
set optimizer_switch=NULL;
@ -43,60 +43,60 @@ set optimizer_switch=default;
set optimizer_switch='index_merge=off,index_merge_union=off,default';
select @@optimizer_switch;
@@optimizer_switch
index_merge=off,index_merge_union=off,index_merge_sort_union=on,index_merge_intersection=on,index_merge_sort_intersection=off,index_condition_pushdown=off,derived_merge=off,derived_with_keys=off,firstmatch=off,loosescan=off,materialization=off,in_to_exists=on,semijoin=off,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=off,mrr=off,mrr_cost_based=off,mrr_sort_keys=off,outer_join_with_cache=off,semijoin_with_cache=off,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=off
index_merge=off,index_merge_union=off,index_merge_sort_union=on,index_merge_intersection=on,index_merge_sort_intersection=off,index_condition_pushdown=off,derived_merge=off,derived_with_keys=off,firstmatch=off,loosescan=off,materialization=off,in_to_exists=on,semijoin=off,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=off,mrr=off,mrr_cost_based=off,mrr_sort_keys=off,outer_join_with_cache=off,semijoin_with_cache=off,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=off,extended_keys=off
set optimizer_switch=default;
select @@global.optimizer_switch;
@@global.optimizer_switch
index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,index_merge_sort_intersection=off,index_condition_pushdown=off,derived_merge=off,derived_with_keys=off,firstmatch=off,loosescan=off,materialization=off,in_to_exists=on,semijoin=off,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=off,mrr=off,mrr_cost_based=off,mrr_sort_keys=off,outer_join_with_cache=off,semijoin_with_cache=off,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=off
index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,index_merge_sort_intersection=off,index_condition_pushdown=off,derived_merge=off,derived_with_keys=off,firstmatch=off,loosescan=off,materialization=off,in_to_exists=on,semijoin=off,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=off,mrr=off,mrr_cost_based=off,mrr_sort_keys=off,outer_join_with_cache=off,semijoin_with_cache=off,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=off,extended_keys=off
set @@global.optimizer_switch=default;
select @@global.optimizer_switch;
@@global.optimizer_switch
index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,index_merge_sort_intersection=off,index_condition_pushdown=off,derived_merge=off,derived_with_keys=off,firstmatch=off,loosescan=off,materialization=off,in_to_exists=on,semijoin=off,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=off,mrr=off,mrr_cost_based=off,mrr_sort_keys=off,outer_join_with_cache=off,semijoin_with_cache=off,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=off
index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,index_merge_sort_intersection=off,index_condition_pushdown=off,derived_merge=off,derived_with_keys=off,firstmatch=off,loosescan=off,materialization=off,in_to_exists=on,semijoin=off,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=off,mrr=off,mrr_cost_based=off,mrr_sort_keys=off,outer_join_with_cache=off,semijoin_with_cache=off,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=off,extended_keys=off
#
# Check index_merge's @@optimizer_switch flags
#
select @@optimizer_switch;
@@optimizer_switch
index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,index_merge_sort_intersection=off,index_condition_pushdown=off,derived_merge=off,derived_with_keys=off,firstmatch=off,loosescan=off,materialization=off,in_to_exists=on,semijoin=off,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=off,mrr=off,mrr_cost_based=off,mrr_sort_keys=off,outer_join_with_cache=off,semijoin_with_cache=off,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=off
index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,index_merge_sort_intersection=off,index_condition_pushdown=off,derived_merge=off,derived_with_keys=off,firstmatch=off,loosescan=off,materialization=off,in_to_exists=on,semijoin=off,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=off,mrr=off,mrr_cost_based=off,mrr_sort_keys=off,outer_join_with_cache=off,semijoin_with_cache=off,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=off,extended_keys=off
BUG#37120 optimizer_switch allowable values not according to specification
select @@optimizer_switch;
@@optimizer_switch
index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,index_merge_sort_intersection=off,index_condition_pushdown=off,derived_merge=off,derived_with_keys=off,firstmatch=off,loosescan=off,materialization=off,in_to_exists=on,semijoin=off,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=off,mrr=off,mrr_cost_based=off,mrr_sort_keys=off,outer_join_with_cache=off,semijoin_with_cache=off,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=off
index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,index_merge_sort_intersection=off,index_condition_pushdown=off,derived_merge=off,derived_with_keys=off,firstmatch=off,loosescan=off,materialization=off,in_to_exists=on,semijoin=off,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=off,mrr=off,mrr_cost_based=off,mrr_sort_keys=off,outer_join_with_cache=off,semijoin_with_cache=off,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=off,extended_keys=off
set optimizer_switch='default,materialization=off';
select @@optimizer_switch;
@@optimizer_switch
index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,index_merge_sort_intersection=off,index_condition_pushdown=off,derived_merge=off,derived_with_keys=off,firstmatch=off,loosescan=off,materialization=off,in_to_exists=on,semijoin=off,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=off,mrr=off,mrr_cost_based=off,mrr_sort_keys=off,outer_join_with_cache=off,semijoin_with_cache=off,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=off
index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,index_merge_sort_intersection=off,index_condition_pushdown=off,derived_merge=off,derived_with_keys=off,firstmatch=off,loosescan=off,materialization=off,in_to_exists=on,semijoin=off,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=off,mrr=off,mrr_cost_based=off,mrr_sort_keys=off,outer_join_with_cache=off,semijoin_with_cache=off,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=off,extended_keys=off
set optimizer_switch='default,semijoin=off';
select @@optimizer_switch;
@@optimizer_switch
index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,index_merge_sort_intersection=off,index_condition_pushdown=off,derived_merge=off,derived_with_keys=off,firstmatch=off,loosescan=off,materialization=off,in_to_exists=on,semijoin=off,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=off,mrr=off,mrr_cost_based=off,mrr_sort_keys=off,outer_join_with_cache=off,semijoin_with_cache=off,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=off
index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,index_merge_sort_intersection=off,index_condition_pushdown=off,derived_merge=off,derived_with_keys=off,firstmatch=off,loosescan=off,materialization=off,in_to_exists=on,semijoin=off,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=off,mrr=off,mrr_cost_based=off,mrr_sort_keys=off,outer_join_with_cache=off,semijoin_with_cache=off,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=off,extended_keys=off
set optimizer_switch='default,loosescan=off';
select @@optimizer_switch;
@@optimizer_switch
index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,index_merge_sort_intersection=off,index_condition_pushdown=off,derived_merge=off,derived_with_keys=off,firstmatch=off,loosescan=off,materialization=off,in_to_exists=on,semijoin=off,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=off,mrr=off,mrr_cost_based=off,mrr_sort_keys=off,outer_join_with_cache=off,semijoin_with_cache=off,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=off
index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,index_merge_sort_intersection=off,index_condition_pushdown=off,derived_merge=off,derived_with_keys=off,firstmatch=off,loosescan=off,materialization=off,in_to_exists=on,semijoin=off,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=off,mrr=off,mrr_cost_based=off,mrr_sort_keys=off,outer_join_with_cache=off,semijoin_with_cache=off,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=off,extended_keys=off
set optimizer_switch='default,semijoin=off,materialization=off';
select @@optimizer_switch;
@@optimizer_switch
index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,index_merge_sort_intersection=off,index_condition_pushdown=off,derived_merge=off,derived_with_keys=off,firstmatch=off,loosescan=off,materialization=off,in_to_exists=on,semijoin=off,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=off,mrr=off,mrr_cost_based=off,mrr_sort_keys=off,outer_join_with_cache=off,semijoin_with_cache=off,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=off
index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,index_merge_sort_intersection=off,index_condition_pushdown=off,derived_merge=off,derived_with_keys=off,firstmatch=off,loosescan=off,materialization=off,in_to_exists=on,semijoin=off,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=off,mrr=off,mrr_cost_based=off,mrr_sort_keys=off,outer_join_with_cache=off,semijoin_with_cache=off,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=off,extended_keys=off
set optimizer_switch='default,materialization=off,semijoin=off';
select @@optimizer_switch;
@@optimizer_switch
index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,index_merge_sort_intersection=off,index_condition_pushdown=off,derived_merge=off,derived_with_keys=off,firstmatch=off,loosescan=off,materialization=off,in_to_exists=on,semijoin=off,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=off,mrr=off,mrr_cost_based=off,mrr_sort_keys=off,outer_join_with_cache=off,semijoin_with_cache=off,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=off
index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,index_merge_sort_intersection=off,index_condition_pushdown=off,derived_merge=off,derived_with_keys=off,firstmatch=off,loosescan=off,materialization=off,in_to_exists=on,semijoin=off,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=off,mrr=off,mrr_cost_based=off,mrr_sort_keys=off,outer_join_with_cache=off,semijoin_with_cache=off,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=off,extended_keys=off
set optimizer_switch='default,semijoin=off,materialization=off,loosescan=off';
select @@optimizer_switch;
@@optimizer_switch
index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,index_merge_sort_intersection=off,index_condition_pushdown=off,derived_merge=off,derived_with_keys=off,firstmatch=off,loosescan=off,materialization=off,in_to_exists=on,semijoin=off,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=off,mrr=off,mrr_cost_based=off,mrr_sort_keys=off,outer_join_with_cache=off,semijoin_with_cache=off,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=off
index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,index_merge_sort_intersection=off,index_condition_pushdown=off,derived_merge=off,derived_with_keys=off,firstmatch=off,loosescan=off,materialization=off,in_to_exists=on,semijoin=off,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=off,mrr=off,mrr_cost_based=off,mrr_sort_keys=off,outer_join_with_cache=off,semijoin_with_cache=off,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=off,extended_keys=off
set optimizer_switch='default,semijoin=off,loosescan=off';
select @@optimizer_switch;
@@optimizer_switch
index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,index_merge_sort_intersection=off,index_condition_pushdown=off,derived_merge=off,derived_with_keys=off,firstmatch=off,loosescan=off,materialization=off,in_to_exists=on,semijoin=off,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=off,mrr=off,mrr_cost_based=off,mrr_sort_keys=off,outer_join_with_cache=off,semijoin_with_cache=off,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=off
index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,index_merge_sort_intersection=off,index_condition_pushdown=off,derived_merge=off,derived_with_keys=off,firstmatch=off,loosescan=off,materialization=off,in_to_exists=on,semijoin=off,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=off,mrr=off,mrr_cost_based=off,mrr_sort_keys=off,outer_join_with_cache=off,semijoin_with_cache=off,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=off,extended_keys=off
set optimizer_switch='default,materialization=off,loosescan=off';
select @@optimizer_switch;
@@optimizer_switch
index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,index_merge_sort_intersection=off,index_condition_pushdown=off,derived_merge=off,derived_with_keys=off,firstmatch=off,loosescan=off,materialization=off,in_to_exists=on,semijoin=off,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=off,mrr=off,mrr_cost_based=off,mrr_sort_keys=off,outer_join_with_cache=off,semijoin_with_cache=off,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=off
index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,index_merge_sort_intersection=off,index_condition_pushdown=off,derived_merge=off,derived_with_keys=off,firstmatch=off,loosescan=off,materialization=off,in_to_exists=on,semijoin=off,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=off,mrr=off,mrr_cost_based=off,mrr_sort_keys=off,outer_join_with_cache=off,semijoin_with_cache=off,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=off,extended_keys=off
set optimizer_switch=default;
select @@optimizer_switch;
@@optimizer_switch
index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,index_merge_sort_intersection=off,index_condition_pushdown=off,derived_merge=off,derived_with_keys=off,firstmatch=off,loosescan=off,materialization=off,in_to_exists=on,semijoin=off,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=off,mrr=off,mrr_cost_based=off,mrr_sort_keys=off,outer_join_with_cache=off,semijoin_with_cache=off,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=off
index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,index_merge_sort_intersection=off,index_condition_pushdown=off,derived_merge=off,derived_with_keys=off,firstmatch=off,loosescan=off,materialization=off,in_to_exists=on,semijoin=off,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=off,mrr=off,mrr_cost_based=off,mrr_sort_keys=off,outer_join_with_cache=off,semijoin_with_cache=off,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=off,extended_keys=off

294
mysql-test/t/innodb_ext_key.test Normal file
View file

@ -0,0 +1,294 @@
--source include/have_innodb.inc
--disable_warnings
DROP TABLE IF EXISTS t1,t2,t3,t4;
DROP DATABASE IF EXISTS dbt3_s001;
--enable_warnings
SET SESSION STORAGE_ENGINE='InnoDB';
CREATE DATABASE dbt3_s001;
use dbt3_s001;
--disable_query_log
--disable_result_log
--disable_warnings
--source include/dbt3_s001.inc
--enable_warnings
--enable_result_log
--enable_query_log
set @save_ext_key_optimizer_switch=@@optimizer_switch;
set optimizer_switch='extended_keys=off';
explain
select count(*) from lineitem where l_orderkey=130 and l_shipdate='1992-07-01';
flush status;
select count(*) from lineitem where l_orderkey=130 and l_shipdate='1992-07-01';
show status like 'handler_read%';
set optimizer_switch='extended_keys=on';
explain
select count(*) from lineitem where l_orderkey=130 and l_shipdate='1992-07-01';
flush status;
select count(*) from lineitem where l_orderkey=130 and l_shipdate='1992-07-01';
show status like 'handler_read%';
set optimizer_switch='extended_keys=off';
explain
select count(*) from lineitem
where l_orderkey=130 and l_linenumber=2 and l_shipdate='1992-07-01';
flush status;
select count(*) from lineitem
where l_orderkey=130 and l_linenumber=2 and l_shipdate='1992-07-01';
show status like 'handler_read%';
set optimizer_switch='extended_keys=on';
explain
select count(*) from lineitem
where l_orderkey=130 and l_linenumber=2 and l_shipdate='1992-07-01';
flush status;
select count(*) from lineitem
where l_orderkey=130 and l_linenumber=2 and l_shipdate='1992-07-01';
show status like 'handler_read%';
set optimizer_switch='extended_keys=off';
explain
select count(*) from lineitem
where l_shipdate='1992-07-01' and l_orderkey between 1 and 1000;
flush status;
select count(*) from lineitem
where l_shipdate='1992-07-01' and l_orderkey between 1 and 1000;
show status like 'handler_read%';
set optimizer_switch='extended_keys=on';
explain
select count(*) from lineitem
where l_shipdate='1992-07-01' and l_orderkey between 1 and 1000;
flush status;
select count(*) from lineitem
where l_shipdate='1992-07-01' and l_orderkey between 1 and 1000;
show status like 'handler_read%';
set optimizer_switch='extended_keys=off';
explain
select l_orderkey, l_linenumber from lineitem
where l_shipdate='1992-07-01' and l_orderkey between 1001 and 2000;
flush status;
select l_orderkey, l_linenumber from lineitem
where l_shipdate='1992-07-01' and l_orderkey between 1001 and 2000;
show status like 'handler_read%';
set optimizer_switch='extended_keys=on';
explain
select l_orderkey, l_linenumber from lineitem
where l_shipdate='1992-07-01' and l_orderkey between 1001 and 2000;
flush status;
select l_orderkey, l_linenumber from lineitem
where l_shipdate='1992-07-01' and l_orderkey between 1001 and 2000;
show status like 'handler_read%';
set optimizer_switch='extended_keys=off';
explain
select min(l_orderkey) from lineitem where l_shipdate='1992-07-01';
flush status;
select min(l_orderkey) from lineitem where l_shipdate='1992-07-01';
show status like 'handler_read%';
set optimizer_switch='extended_keys=on';
explain
select min(l_orderkey) from lineitem where l_shipdate='1992-07-01';
flush status;
select min(l_orderkey) from lineitem where l_shipdate='1992-07-01';
show status like 'handler_read%';
set optimizer_switch='extended_keys=off';
explain
select min(l_orderkey) from lineitem
where l_shipdate='1992-07-01' and l_orderkey between 1001 and 2000;
flush status;
select min(l_orderkey) from lineitem
where l_shipdate='1992-07-01' and l_orderkey between 1001 and 2000;
show status like 'handler_read%';
set optimizer_switch='extended_keys=on';
explain
select min(l_orderkey) from lineitem
where l_shipdate='1992-07-01' and l_orderkey between 1001 and 2000;
flush status;
select min(l_orderkey) from lineitem
where l_shipdate='1992-07-01' and l_orderkey between 1001 and 2000;
show status like 'handler_read%';
set optimizer_switch='extended_keys=off';
explain
select max(l_linenumber) from lineitem
where l_shipdate='1992-07-01' and l_orderkey=130;
flush status;
select max(l_linenumber) from lineitem
where l_shipdate='1992-07-01' and l_orderkey=130;
show status like 'handler_read%';
set optimizer_switch='extended_keys=on';
explain
select max(l_linenumber) from lineitem
where l_shipdate='1992-07-01' and l_orderkey=130;
flush status;
select max(l_linenumber) from lineitem
where l_shipdate='1992-07-01' and l_orderkey=130;
show status like 'handler_read%';
set optimizer_switch='extended_keys=off';
explain
select l_orderkey, l_linenumber
from lineitem use index (i_l_shipdate, i_l_receiptdate)
where l_shipdate='1992-07-01' and l_orderkey=130
or l_receiptdate='1992-07-01' and l_orderkey=5603;
flush status;
select l_orderkey, l_linenumber
from lineitem use index (i_l_shipdate, i_l_receiptdate)
where l_shipdate='1992-07-01' and l_orderkey=130
or l_receiptdate='1992-07-01' and l_orderkey=5603;
show status like 'handler_read%';
set optimizer_switch='extended_keys=on';
explain
select l_orderkey, l_linenumber
from lineitem use index (i_l_shipdate, i_l_receiptdate)
where l_shipdate='1992-07-01' and l_orderkey=130
or l_receiptdate='1992-07-01' and l_orderkey=5603;
flush status;
select l_orderkey, l_linenumber
from lineitem use index (i_l_shipdate, i_l_receiptdate)
where l_shipdate='1992-07-01' and l_orderkey=130
or l_receiptdate='1992-07-01' and l_orderkey=5603;
show status like 'handler_read%';
set optimizer_switch='extended_keys=off';
explain
select l_orderkey, l_linenumber
from lineitem use index (i_l_shipdate, i_l_receiptdate)
where l_shipdate='1992-07-01' and l_orderkey between 1 and 1000
or l_receiptdate='1992-07-01' and l_orderkey between 5001 and 6000;
flush status;
select l_orderkey, l_linenumber
from lineitem use index (i_l_shipdate, i_l_receiptdate)
where l_shipdate='1992-07-01' and l_orderkey between 1 and 1000
or l_receiptdate='1992-07-01' and l_orderkey between 5001 and 6000;
show status like 'handler_read%';
set optimizer_switch='extended_keys=on';
explain
select l_orderkey, l_linenumber
from lineitem use index (i_l_shipdate, i_l_receiptdate)
where l_shipdate='1992-07-01' and l_orderkey between 1 and 1000
or l_receiptdate='1992-07-01' and l_orderkey between 5001 and 6000;
flush status;
select l_orderkey, l_linenumber
from lineitem use index (i_l_shipdate, i_l_receiptdate)
where l_shipdate='1992-07-01' and l_orderkey between 1 and 1000
or l_receiptdate='1992-07-01' and l_orderkey between 5001 and 6000;
show status like 'handler_read%';
set optimizer_switch='extended_keys=off';
explain
select l_orderkey, l_linenumber from lineitem
where l_shipdate='1992-07-01' and l_orderkey between 1 and 1000
or l_receiptdate='1992-07-01' and l_orderkey between 5001 and 6000;
flush status;
select l_orderkey, l_linenumber from lineitem
where l_shipdate='1992-07-01' and l_orderkey between 1 and 1000
or l_receiptdate='1992-07-01' and l_orderkey between 5001 and 6000;
show status like 'handler_read%';
set optimizer_switch='extended_keys=on';
explain
select l_orderkey, l_linenumber from lineitem
where l_shipdate='1992-07-01' and l_orderkey between 1 and 1000
or l_receiptdate='1992-07-01' and l_orderkey between 5001 and 6000;
flush status;
select l_orderkey, l_linenumber from lineitem
where l_shipdate='1992-07-01' and l_orderkey between 1 and 1000
or l_receiptdate='1992-07-01' and l_orderkey between 5001 and 6000;
show status like 'handler_read%';
set optimizer_switch='extended_keys=off';
--replace_column 9 #
explain
select max(l_orderkey) from lineitem
where l_partkey between 1 and 10 group by l_partkey;
flush status;
select max(l_orderkey) from lineitem
where l_partkey between 1 and 10 group by l_partkey;
show status like 'handler_read%';
set optimizer_switch='extended_keys=on';
--replace_column 9 #
explain
select max(l_orderkey) from lineitem
where l_partkey between 1 and 10 group by l_partkey;
flush status;
select max(l_orderkey) from lineitem
where l_partkey between 1 and 10 group by l_partkey;
show status like 'handler_read%';
set optimizer_switch='extended_keys=off';
--replace_column 9 #
explain
select max(l_orderkey) from lineitem
where l_suppkey in (1,4) group by l_suppkey;
flush status;
select max(l_orderkey) from lineitem
where l_suppkey in (1,4) group by l_suppkey;
show status like 'handler_read%';
set optimizer_switch='extended_keys=on';
--replace_column 9 #
explain
select max(l_orderkey) from lineitem
where l_suppkey in (1,4) group by l_suppkey;
flush status;
select max(l_orderkey) from lineitem
where l_suppkey in (1,4) group by l_suppkey;
show status like 'handler_read%';
create index i_p_retailprice on part(p_retailprice);
set optimizer_switch='extended_keys=off';
--replace_column 9 #
explain
select o_orderkey, p_partkey
from part use index (i_p_retailprice),
lineitem use index (i_l_partkey), orders
where p_retailprice > 1100 and o_orderdate='1997-01-01'
and o_orderkey=l_orderkey and p_partkey=l_partkey;
flush status;
select o_orderkey, p_partkey
from part use index (i_p_retailprice),
lineitem use index (i_l_partkey), orders
where p_retailprice > 1100 and o_orderdate='1997-01-01'
and o_orderkey=l_orderkey and p_partkey=l_partkey;
show status like 'handler_read%';
set optimizer_switch='extended_keys=on';
--replace_column 9 #
explain
select o_orderkey, p_partkey
from part use index (i_p_retailprice),
lineitem use index (i_l_partkey), orders
where p_retailprice > 1100 and o_orderdate='1997-01-01'
and o_orderkey=l_orderkey and p_partkey=l_partkey;
flush status;
select o_orderkey, p_partkey
from part use index (i_p_retailprice),
lineitem use index (i_l_partkey), orders
where p_retailprice > 1100 and o_orderdate='1997-01-01'
and o_orderkey=l_orderkey and p_partkey=l_partkey;
show status like 'handler_read%';
set optimizer_switch=@save_ext_key_optimizer_switch;
DROP DATABASE dbt3_s001;
SET SESSION STORAGE_ENGINE=DEFAULT;

3
sql/mysql_priv.h
View file

@ -590,7 +590,8 @@ protected:
#define OPTIMIZER_SWITCH_JOIN_CACHE_BKA (1ULL << 23)
#define OPTIMIZER_SWITCH_OPTIMIZE_JOIN_BUFFER_SIZE (1ULL << 24)
#define OPTIMIZER_SWITCH_TABLE_ELIMINATION (1ULL << 25)
#define OPTIMIZER_SWITCH_LAST (1ULL << 26)
#define OPTIMIZER_SWITCH_EXTENDED_KEYS (1ULL << 26)
#define OPTIMIZER_SWITCH_LAST (1ULL << 27)
/* The following must be kept in sync with optimizer_switch_str in mysqld.cc */
/*

8
sql/mysqld.cc
View file

@ -351,6 +351,7 @@ static const char *optimizer_switch_names[]=
"join_cache_bka",
"optimize_join_buffer_size",
"table_elimination",
"extended_keys",
"default", NullS
};
@ -383,6 +384,7 @@ static const unsigned int optimizer_switch_names_len[]=
sizeof("join_cache_bka") - 1,
sizeof("optimize_join_buffer_size") - 1,
sizeof("table_elimination") - 1,
sizeof("extended_keys") - 1,
sizeof("default") - 1
};
TYPELIB optimizer_switch_typelib= { array_elements(optimizer_switch_names)-1,"",
@ -499,8 +501,8 @@ static const char *optimizer_switch_str="index_merge=on,index_merge_union=on,"
"join_cache_hashed=on,"
"join_cache_bka=on,"
"optimize_join_buffer_size=off,"
"table_elimination=on";
;
"table_elimination=on,"
"extended_keys=off";
#ifdef SAFEMALLOC
my_bool sf_malloc_trough_check= 0;
#endif
@ -7565,7 +7567,7 @@ each time the SQL thread starts.",
"subquery_cache, outer_join_with_cache, semijoin_with_cache, "
"join_cache_incremental, join_cache_hashed, join_cache_bka, "
"optimize_join_buffer_size"
", table_elimination"
", table_elimination, extended_keys"
"} and val={on, off, default}.",
&optimizer_switch_str, &optimizer_switch_str, 0, GET_STR, REQUIRED_ARG,
/*OPTIMIZER_SWITCH_DEFAULT*/0, 0, 0, 0, 0, 0},

38
sql/opt_range.cc
View file

@ -2977,9 +2977,10 @@ int SQL_SELECT::test_quick_select(THD *thd, key_map keys_to_use,
thd->no_errors=1; // Don't warn about NULL
init_sql_alloc(&alloc, thd->variables.range_alloc_block_size, 0);
if (!(param.key_parts= (KEY_PART*) alloc_root(&alloc,
sizeof(KEY_PART)*
head->s->key_parts)) ||
if (!(param.key_parts=
(KEY_PART*) alloc_root(&alloc,
sizeof(KEY_PART)*
head->s->actual_n_key_parts(thd))) ||
fill_used_fields_bitmap(&param))
{
thd->no_errors=0;
@ -2997,6 +2998,8 @@ int SQL_SELECT::test_quick_select(THD *thd, key_map keys_to_use,
for (idx=0 ; idx < head->s->keys ; idx++, key_info++)
{
KEY_PART_INFO *key_part_info;
uint n_key_parts= head->actual_n_key_parts(key_info);
if (!keys_to_use.is_set(idx))
continue;
if (key_info->flags & HA_FULLTEXT)
@ -3004,9 +3007,9 @@ int SQL_SELECT::test_quick_select(THD *thd, key_map keys_to_use,
param.key[param.keys]=key_parts;
key_part_info= key_info->key_part;
for (uint part=0 ; part < key_info->key_parts ;
part++, key_parts++, key_part_info++)
{
for (uint part= 0 ; part < n_key_parts ;
part++, key_parts++, key_part_info++)
{
key_parts->key= param.keys;
key_parts->part= part;
key_parts->length= key_part_info->length;
@ -10017,13 +10020,14 @@ get_quick_select(PARAM *param,uint idx,SEL_ARG *key_tree, uint mrr_flags,
}
else
{
KEY *keyinfo= param->table->key_info+param->real_keynr[idx];
quick->mrr_flags= mrr_flags;
quick->mrr_buf_size= mrr_buf_size;
quick->key_parts=(KEY_PART*)
memdup_root(parent_alloc? parent_alloc : &quick->alloc,
(char*) param->key[idx],
sizeof(KEY_PART)*
param->table->key_info[param->real_keynr[idx]].key_parts);
param->table->actual_n_key_parts(keyinfo));
}
}
DBUG_RETURN(quick);
@ -11681,6 +11685,7 @@ get_best_group_min_max(PARAM *param, SEL_TREE *tree)
KEY_PART_INFO *last_part;
KEY_PART_INFO *first_non_group_part;
KEY_PART_INFO *first_non_infix_part;
uint key_parts;
uint key_infix_parts;
uint cur_group_key_parts= 0;
uint cur_group_prefix_len= 0;
@ -11695,7 +11700,8 @@ get_best_group_min_max(PARAM *param, SEL_TREE *tree)
if (!table->covering_keys.is_set(cur_index))
goto next_index;
/*
/*
Unless extended keys can be used for cur_index:
If the current storage manager is such that it appends the primary key to
each index, then the above condition is insufficient to check if the
index is covering. In such cases it may happen that some fields are
@ -11704,7 +11710,8 @@ get_best_group_min_max(PARAM *param, SEL_TREE *tree)
does not qualify as covering in our case. If this is the case, below
we check that all query fields are indeed covered by 'cur_index'.
*/
if (pk < MAX_KEY && cur_index != pk &&
if (cur_index_info->key_parts==table->actual_n_key_parts(cur_index_info) &&
pk < MAX_KEY && cur_index != pk &&
(table->file->ha_table_flags() & HA_PRIMARY_KEY_IN_READ_INDEX))
{
/* For each table field */
@ -11721,13 +11728,14 @@ get_best_group_min_max(PARAM *param, SEL_TREE *tree)
}
}
/*
Check (GA1) for GROUP BY queries.
*/
if (join->group_list)
{
cur_part= cur_index_info->key_part;
end_part= cur_part + cur_index_info->key_parts;
end_part= cur_part + table->actual_n_key_parts(cur_index_info);
/* Iterate in parallel over the GROUP list and the index parts. */
for (tmp_group= join->group_list; tmp_group && (cur_part != end_part);
tmp_group= tmp_group->next, cur_part++)
@ -11820,10 +11828,11 @@ get_best_group_min_max(PARAM *param, SEL_TREE *tree)
If there is no MIN/MAX, the keyparts after the last group part can be
referenced only in equalities with constants, and the referenced keyparts
must form a sequence without any gaps that starts immediately after the
last group keypart.
last group keyparyt.
*/
last_part= cur_index_info->key_part + cur_index_info->key_parts;
first_non_group_part= (cur_group_key_parts < cur_index_info->key_parts) ?
key_parts= table->actual_n_key_parts(cur_index_info);
last_part= cur_index_info->key_part + key_parts;
first_non_group_part= (cur_group_key_parts < key_parts) ?
cur_index_info->key_part + cur_group_key_parts :
NULL;
first_non_infix_part= min_max_arg_part ?
@ -12273,7 +12282,8 @@ get_field_keypart(KEY *index, Field *field)
{
KEY_PART_INFO *part, *end;
for (part= index->key_part, end= part + index->key_parts; part < end; part++)
for (part= index->key_part, end= part+field->table->actual_n_key_parts(index);
part < end; part++)
{
if (field->eq(part->field))
return part - index->key_part + 1;

4
sql/opt_sum.cc
View file

@ -844,7 +844,6 @@ static bool matching_cond(bool max_fl, TABLE_REF *ref, KEY *keyinfo,
1 Can use key to optimize MIN()/MAX().
In this case ref, range_fl and prefix_len are updated
*/
static bool find_key_for_maxmin(bool max_fl, TABLE_REF *ref,
Field* field, COND *cond,
@ -873,7 +872,8 @@ static bool find_key_for_maxmin(bool max_fl, TABLE_REF *ref,
continue;
uint jdx= 0;
*prefix_len= 0;
for (part= keyinfo->key_part, part_end= part+keyinfo->key_parts ;
part_end= keyinfo->key_part+table->actual_n_key_parts(keyinfo);
for (part= keyinfo->key_part ;
part != part_end ;
part++, jdx++, key_part_to_use= (key_part_to_use << 1) | 1)
{

27
sql/sql_select.cc
View file

@ -3339,11 +3339,13 @@ make_join_statistics(JOIN *join, List<TABLE_LIST> &tables_list,
The effect of this is that we don't do const substitution for
such tables.
*/
if (eq_part.is_prefix(table->key_info[key].key_parts) &&
KEY *keyinfo= table->key_info+key;
uint key_parts= table->actual_n_key_parts(keyinfo);
if (eq_part.is_prefix(key_parts) &&
!table->fulltext_searched &&
(!embedding || (embedding->sj_on_expr && !embedding->embedding)))
{
if (table->key_info[key].flags & HA_NOSAME)
if (table->actual_key_flags(keyinfo) & HA_NOSAME)
{
if (const_ref == eq_part &&
!has_expensive_keyparts &&
@ -4367,7 +4369,8 @@ add_key_part(DYNAMIC_ARRAY *keyuse_array, KEY_FIELD *key_field)
if (form->key_info[key].flags & (HA_FULLTEXT | HA_SPATIAL))
continue; // ToDo: ft-keys in non-ft queries. SerG
uint key_parts= (uint) form->key_info[key].key_parts;
KEY *keyinfo= form->key_info+key;
uint key_parts= form->actual_n_key_parts(keyinfo);
for (uint part=0 ; part < key_parts ; part++)
{
if (field->eq(form->key_info[key].key_part[part].field))
@ -4670,7 +4673,7 @@ update_ref_and_keys(THD *thd, DYNAMIC_ARRAY *keyuse,JOIN_TAB *join_tab,
/* fill keyuse with found key parts */
for ( ; field != end ; field++)
{
if (add_key_part(keyuse,field))
if (add_key_part(keyuse, field))
return TRUE;
}
@ -4997,6 +5000,8 @@ best_access_path(JOIN *join,
for (keyuse=s->keyuse ; keyuse->table == table ;)
{
KEY *keyinfo;
ulong key_flags;
uint key_parts;
key_part_map found_part= 0;
table_map found_ref= 0;
uint key= keyuse->key;
@ -5023,6 +5028,8 @@ best_access_path(JOIN *join,
}
keyinfo= table->key_info+key;
key_parts= table->actual_n_key_parts(keyinfo);
key_flags= table->actual_key_flags(keyinfo);
/* Calculate how many key segments of the current key we can use */
start_key= keyuse;
@ -5101,11 +5108,11 @@ best_access_path(JOIN *join,
loose_scan_opt.check_ref_access_part1(s, key, start_key, found_part);
/* Check if we found full key */
if (found_part == PREV_BITS(uint,keyinfo->key_parts) &&
if (found_part == PREV_BITS(uint, key_parts) &&
!ref_or_null_part)
{ /* use eq key */
max_key_part= (uint) ~0;
if ((keyinfo->flags & (HA_NOSAME | HA_NULL_PART_KEY)) == HA_NOSAME)
if ((key_flags & (HA_NOSAME | HA_NULL_PART_KEY)) == HA_NOSAME)
{
tmp = prev_record_reads(join->positions, idx, found_ref);
records=1.0;
@ -7196,6 +7203,7 @@ static bool create_hj_key_for_table(JOIN *join, JOIN_TAB *join_tab,
key_parts)))
DBUG_RETURN(TRUE);
keyinfo->usable_key_parts= keyinfo->key_parts = key_parts;
keyinfo->ext_key_parts= keyinfo->key_parts;
keyinfo->key_part= key_part_info;
keyinfo->key_length=0;
keyinfo->algorithm= HA_KEY_ALG_UNDEF;
@ -7403,8 +7411,11 @@ static bool create_ref_for_key(JOIN *join, JOIN_TAB *j,
DBUG_RETURN(0);
if (j->type == JT_CONST)
j->table->const_table= 1;
else if (((keyinfo->flags & (HA_NOSAME | HA_NULL_PART_KEY)) != HA_NOSAME) ||
keyparts != keyinfo->key_parts || null_ref_key)
else if (((j->table->actual_key_flags(keyinfo) &
(HA_NOSAME | HA_NULL_PART_KEY))
!= HA_NOSAME) ||
keyparts != j->table->actual_n_key_parts(keyinfo) ||
null_ref_key)
{
/* Must read with repeat */
j->type= null_ref_key ? JT_REF_OR_NULL : JT_REF;

3
sql/structs.h
View file

@ -77,6 +77,9 @@ typedef struct st_key {
ulong flags; /* dupp key and pack flags */
uint key_parts; /* How many key_parts */
uint usable_key_parts; /* Should normally be = key_parts */
uint ext_key_parts; /* Number of key parts in extended key */
ulong ext_key_flags; /* Flags for extended key */
key_part_map ext_key_part_map; /* Bitmap of pk key parts in extension */
uint block_size;
uint name_length;
enum ha_key_alg algorithm;

238
sql/table.cc
View file

@ -705,6 +705,13 @@ static int open_binary_frm(THD *thd, TABLE_SHARE *share, uchar *head,
enum legacy_db_type legacy_db_type;
my_bitmap_map *bitmaps;
bool null_bits_are_used;
KEY first_keyinfo;
uint len;
KEY_PART_INFO *first_key_part= NULL;
uint ext_key_parts= 0;
uint first_key_parts= 0;
keyinfo= &first_keyinfo;
share->ext_key_parts= 0;
DBUG_ENTER("open_binary_frm");
LINT_INIT(options);
@ -798,18 +805,28 @@ static int open_binary_frm(THD *thd, TABLE_SHARE *share, uchar *head,
share->keys_for_keyread.init(0);
share->keys_in_use.init(keys);
n_length=keys*sizeof(KEY)+key_parts*sizeof(KEY_PART_INFO);
if (!(keyinfo = (KEY*) alloc_root(&share->mem_root,
n_length + uint2korr(disk_buff+4))))
goto err; /* purecov: inspected */
bzero((char*) keyinfo,n_length);
share->key_info= keyinfo;
key_part= my_reinterpret_cast(KEY_PART_INFO*) (keyinfo+keys);
strpos=disk_buff+6;
/* Currently only InnoDB can use extended keys */
share->set_use_ext_keys_flag(legacy_db_type == DB_TYPE_INNODB);
if (!(rec_per_key= (ulong*) alloc_root(&share->mem_root,
sizeof(ulong)*key_parts)))
goto err;
len= (uint) uint2korr(disk_buff+4);
if (!keys)
{
if (!(keyinfo = (KEY*) alloc_root(&share->mem_root, len)))
goto err;
bzero((char*) keyinfo, len);
key_part= my_reinterpret_cast(KEY_PART_INFO*) (keyinfo+keys);
}
strpos= disk_buff+6;
/*
If share->use_ext_keys is set to TRUE we assume that any key
can be extended by the components of the primary key whose
definition is read first from the frm file.
For each key only those fields of the assumed primary key are
added that are not included in the proper key definition.
If after all it turns out that there is no primary key the
added components are removed from each key.
*/
for (i=0 ; i < keys ; i++, keyinfo++)
{
@ -831,6 +848,32 @@ static int open_binary_frm(THD *thd, TABLE_SHARE *share, uchar *head,
strpos+=4;
}
if (i == 0)
{
ext_key_parts= key_parts +
(share->use_ext_keys ? first_keyinfo.key_parts*(keys-1) : 0);
n_length=keys*sizeof(KEY)+ext_key_parts*sizeof(KEY_PART_INFO);
if (!(keyinfo= (KEY*) alloc_root(&share->mem_root,
n_length + len)))
goto err; /* purecov: inspected */
bzero((char*) keyinfo,n_length);
share->key_info= keyinfo;
key_part= my_reinterpret_cast(KEY_PART_INFO*) (keyinfo+keys);
if (!(rec_per_key= (ulong*) alloc_root(&share->mem_root,
sizeof(ulong)*ext_key_parts)))
goto err;
first_key_part= key_part;
first_key_parts= first_keyinfo.key_parts;
keyinfo->flags= first_keyinfo.flags;
keyinfo->key_length= first_keyinfo.key_length;
keyinfo->key_parts= first_keyinfo.key_parts;
keyinfo->algorithm= first_keyinfo.algorithm;
if (new_frm_ver >= 3)
keyinfo->block_size= first_keyinfo.block_size;
}
keyinfo->key_part= key_part;
keyinfo->rec_per_key= rec_per_key;
for (j=keyinfo->key_parts ; j-- ; key_part++)
@ -859,6 +902,31 @@ static int open_binary_frm(THD *thd, TABLE_SHARE *share, uchar *head,
}
key_part->store_length=key_part->length;
}
keyinfo->ext_key_parts= keyinfo->key_parts;
if (share->use_ext_keys && i)
{
keyinfo->ext_key_flags= keyinfo->flags | HA_NOSAME;
keyinfo->ext_key_part_map= 0;
for (j= 0; j<first_key_parts && keyinfo->ext_key_parts<MAX_REF_PARTS; j++)
{
uint key_parts= keyinfo->key_parts;
KEY_PART_INFO* curr_key_part= keyinfo->key_part;
KEY_PART_INFO* curr_key_part_end= curr_key_part+key_parts;
for ( ; curr_key_part < curr_key_part_end; curr_key_part++)
{
if (curr_key_part->fieldnr == first_key_part[j].fieldnr)
break;
}
if (curr_key_part == curr_key_part_end)
{
*key_part++= first_key_part[j];
*rec_per_key++= 0;
keyinfo->ext_key_parts++;
keyinfo->ext_key_part_map|= 1 << j;
}
}
}
share->ext_key_parts+= keyinfo->ext_key_parts;
}
keynames=(char*) key_part;
strpos+= (strmov(keynames, (char *) strpos) - keynames)+1;
@ -1421,11 +1489,38 @@ static int open_binary_frm(THD *thd, TABLE_SHARE *share, uchar *head,
/* Fix key->name and key_part->field */
if (key_parts)
{
uint add_first_key_parts= 0;
uint primary_key=(uint) (find_type((char*) primary_key_name,
&share->keynames, 3) - 1);
longlong ha_option= handler_file->ha_table_flags();
keyinfo= share->key_info;
key_part= keyinfo->key_part;
if (share->use_ext_keys)
{
if (primary_key >= MAX_KEY)
{
add_first_key_parts= 0;
share->set_use_ext_keys_flag(FALSE);
}
else
{
add_first_key_parts= first_key_parts;
/*
Do not add components of the primary key starting from
the major component defined over the beginning of a field.
*/
for (i= 0; i < first_key_parts; i++)
{
uint fieldnr= keyinfo[0].key_part[i].fieldnr;
if (share->field[fieldnr-1]->key_length() !=
keyinfo[0].key_part[i].length)
{
add_first_key_parts= i;
break;
}
}
}
}
for (uint key=0 ; key < share->keys ; key++,keyinfo++)
{
@ -1444,6 +1539,51 @@ static int open_binary_frm(THD *thd, TABLE_SHARE *share, uchar *head,
keyinfo->name_length+1);
}
if (ext_key_parts > share->key_parts && key)
{
KEY_PART_INFO *new_key_part= (keyinfo-1)->key_part+
(keyinfo-1)->ext_key_parts;
/*
Do not extend the key that contains a component
defined over the beginning of a field.
*/
for (i= 0; i < keyinfo->key_parts; i++)
{
uint fieldnr= keyinfo->key_part[i].fieldnr;
if (share->field[fieldnr-1]->key_length() !=
keyinfo->key_part[i].length)
{
add_first_key_parts= 0;
break;
}
}
if (add_first_key_parts < keyinfo->ext_key_parts-keyinfo->key_parts)
{
share->ext_key_parts-= keyinfo->ext_key_parts;
key_part_map ext_key_part_map= keyinfo->ext_key_part_map;
keyinfo->ext_key_parts= keyinfo->key_parts;
keyinfo->ext_key_flags= keyinfo->flags;
keyinfo->ext_key_part_map= 0;
for (i= 0; i < add_first_key_parts; i++)
{
if (ext_key_part_map & 1<<i)
{
keyinfo->ext_key_part_map|= 1<<i;
keyinfo->ext_key_parts++;
}
}
share->ext_key_parts+= keyinfo->ext_key_parts;
}
if (new_key_part != keyinfo->key_part)
{
memmove(new_key_part, keyinfo->key_part,
sizeof(KEY_PART_INFO) * keyinfo->ext_key_parts);
keyinfo->key_part= new_key_part;
}
}
/* Fix fulltext keys for old .frm files */
if (share->key_info[key].flags & HA_FULLTEXT)
share->key_info[key].algorithm= HA_KEY_ALG_FULLTEXT;
@ -1455,6 +1595,7 @@ static int open_binary_frm(THD *thd, TABLE_SHARE *share, uchar *head,
declare this as a primary key.
*/
primary_key=key;
key_part= keyinfo->key_part;
for (i=0 ; i < keyinfo->key_parts ;i++)
{
uint fieldnr= key_part[i].fieldnr;
@ -1469,7 +1610,10 @@ static int open_binary_frm(THD *thd, TABLE_SHARE *share, uchar *head,
}
}
for (i=0 ; i < keyinfo->key_parts ; key_part++,i++)
key_part= keyinfo->key_part;
uint key_parts= share->use_ext_keys ? keyinfo->ext_key_parts :
keyinfo->key_parts;
for (i=0; i < key_parts; key_part++, i++)
{
Field *field;
if (new_field_pack_flag <= 1)
@ -1521,7 +1665,8 @@ static int open_binary_frm(THD *thd, TABLE_SHARE *share, uchar *head,
{
share->keys_for_keyread.set_bit(key);
field->part_of_key.set_bit(key);
field->part_of_key_not_clustered.set_bit(key);
if (i < keyinfo->key_parts)
field->part_of_key_not_clustered.set_bit(key);
}
if (handler_file->index_flags(key, i, 1) & HA_READ_ORDER)
field->part_of_sortkey.set_bit(key);
@ -2196,15 +2341,15 @@ int open_table_from_share(THD *thd, TABLE_SHARE *share, const char *alias,
KEY *key_info, *key_info_end;
KEY_PART_INFO *key_part;
uint n_length;
n_length= share->keys*sizeof(KEY) + share->key_parts*sizeof(KEY_PART_INFO);
n_length= share->keys*sizeof(KEY) + share->ext_key_parts*sizeof(KEY_PART_INFO);
if (!(key_info= (KEY*) alloc_root(&outparam->mem_root, n_length)))
goto err;
outparam->key_info= key_info;
key_part= (my_reinterpret_cast(KEY_PART_INFO*) (key_info+share->keys));
memcpy(key_info, share->key_info, sizeof(*key_info)*share->keys);
memcpy(key_part, share->key_info[0].key_part, (sizeof(*key_part) *
share->key_parts));
share->ext_key_parts));
for (key_info_end= key_info + share->keys ;
key_info < key_info_end ;
@ -2215,9 +2360,9 @@ int open_table_from_share(THD *thd, TABLE_SHARE *share, const char *alias,
key_info->table= outparam;
key_info->key_part= key_part;
for (key_part_end= key_part+ key_info->key_parts ;
key_part < key_part_end ;
key_part++)
key_part_end= key_part + (share->use_ext_keys ? key_info->ext_key_parts :
key_info->key_parts) ;
for ( ; key_part < key_part_end; key_part++)
{
Field *field= key_part->field= outparam->field[key_part->fieldnr-1];
@ -2233,6 +2378,8 @@ int open_table_from_share(THD *thd, TABLE_SHARE *share, const char *alias,
field->field_length= key_part->length;
}
}
if (!share->use_ext_keys)
key_part+= key_info->ext_key_parts-key_info->key_parts;
}
}
@ -3138,7 +3285,7 @@ uint calculate_key_len(TABLE *table, uint key, const uchar *buf,
KEY *key_info= table->s->key_info+key;
KEY_PART_INFO *key_part= key_info->key_part;
KEY_PART_INFO *end_key_part= key_part + key_info->key_parts;
KEY_PART_INFO *end_key_part= key_part + table->actual_n_key_parts(key_info);
uint length= 0;
while (key_part < end_key_part && keypart_map)
@ -5414,6 +5561,47 @@ bool st_table::is_filled_at_execution()
}
/**
@brief
Get actual number of key components
@param keyinfo
@details
The function calculates actual number of key components, possibly including
components of extended keys, taken into consideration by the optimizer for the
key described by the parameter keyinfo.
@return number of considered key components
*/
inline uint st_table::actual_n_key_parts(KEY *keyinfo)
{
return optimizer_flag(in_use, OPTIMIZER_SWITCH_EXTENDED_KEYS) ?
keyinfo->ext_key_parts : keyinfo->key_parts;
}
/**
@brief
Get actual key flags for a table key
@param keyinfo
@details
The function finds out actual key flags taken into consideration by the
optimizer for the key described by the parameter keyinfo.
@return actual key flags
*/
ulong st_table::actual_key_flags(KEY *keyinfo)
{
return optimizer_flag(in_use, OPTIMIZER_SWITCH_EXTENDED_KEYS) ?
keyinfo->ext_key_flags : keyinfo->flags;
}
/*
Cleanup this table for re-execution.
@ -6007,6 +6195,14 @@ bool TABLE_LIST::change_refs_to_fields()
}
uint TABLE_SHARE::actual_n_key_parts(THD *thd)
{
return use_ext_keys &&
optimizer_flag(thd, OPTIMIZER_SWITCH_EXTENDED_KEYS) ?
ext_key_parts : key_parts;
}
/*****************************************************************************
** Instansiate templates
*****************************************************************************/

11
sql/table.h
View file

@ -418,6 +418,7 @@ typedef struct st_table_share
uint stored_fields;
uint rec_buff_length; /* Size of table->record[] buffer */
uint keys, key_parts;
uint ext_key_parts; /* Total number of key parts in extended keys */
uint max_key_length, max_unique_length, total_key_length;
uint uniques; /* Number of UNIQUE index */
uint null_fields; /* number of null fields */
@ -438,6 +439,7 @@ typedef struct st_table_share
uint column_bitmap_size;
uchar frm_version;
uint vfields; /* Number of computed (virtual) fields */
bool use_ext_keys; /* Extended keys can be used */
bool null_field_first;
bool system; /* Set if system table (one record) */
bool crypted; /* If .frm file is crypted */
@ -652,6 +654,13 @@ typedef struct st_table_share
return (tmp_table == SYSTEM_TMP_TABLE || is_view) ? 0 : table_map_id;
}
void set_use_ext_keys_flag(bool fl)
{
use_ext_keys= fl;
}
uint actual_n_key_parts(THD *thd);
} TABLE_SHARE;
@ -991,6 +1000,8 @@ struct st_table {
}
DBUG_VOID_RETURN;
}
uint actual_n_key_parts(KEY *keyinfo);
ulong actual_key_flags(KEY *keyinfo);
};
enum enum_schema_table_state

51
storage/xtradb/handler/ha_innodb.cc
View file

@ -7849,6 +7849,7 @@ ha_innobase::records_in_range(
ib_int64_t n_rows;
ulint mode1;
ulint mode2;
uint key_parts;
mem_heap_t* heap;
DBUG_ENTER("records_in_range");
@ -7880,14 +7881,19 @@ ha_innobase::records_in_range(
goto func_exit;
}
heap = mem_heap_create(2 * (key->key_parts * sizeof(dfield_t)
key_parts= key->key_parts;
if ((min_key && min_key->keypart_map>=(key_part_map) (1<<key_parts)) ||
(max_key && max_key->keypart_map>=(key_part_map) (1<<key_parts)))
key_parts= key->ext_key_parts;
heap = mem_heap_create(2 * (key_parts * sizeof(dfield_t)
+ sizeof(dtuple_t)));
range_start = dtuple_create(heap, key->key_parts);
dict_index_copy_types(range_start, index, key->key_parts);
range_start = dtuple_create(heap, key_parts);
dict_index_copy_types(range_start, index, key_parts);
range_end = dtuple_create(heap, key->key_parts);
dict_index_copy_types(range_end, index, key->key_parts);
range_end = dtuple_create(heap, key_parts);
dict_index_copy_types(range_end, index, key_parts);
row_sel_convert_mysql_key_to_innobase(
range_start, (byte*) key_val_buff,
@ -8472,6 +8478,41 @@ ha_innobase::info_low(
rec_per_key >= ~(ulong) 0 ? ~(ulong) 0 :
(ulong) rec_per_key;
}
KEY *key_info= table->key_info+i;
key_part_map ext_key_part_map= key_info->ext_key_part_map;
if (key_info->key_parts != key_info->ext_key_parts) {
KEY *pk_key_info= key_info+
table->s->primary_key;
uint k= key_info->key_parts;
for (j = 0; j < pk_key_info->key_parts; j++) {
if (ext_key_part_map & 1<<j) {
index = innobase_get_index(
table->s->primary_key);
rec_per_key =
innodb_rec_per_key(index,
j, stats.records);
if (rec_per_key == 0) {
rec_per_key = 1;
}
key_info->rec_per_key[k++]=
rec_per_key >= ~(ulong) 0 ?
~(ulong) 0 :
(ulong) rec_per_key;
}
}
}
}
dict_table_stats_unlock(ib_table, RW_S_LATCH);