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Supported extended keys when collecting and using persistent statistics.

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This commit is contained in:
Igor Babaev
2012-05-06 22:42:14 -07:00
parent 9f53c310d8
commit 906c9a93a0
5 changed files with 246 additions and 14 deletions
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100
mysql-test/r/stat_tables_innodb.result
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@ -1,9 +1,13 @@
SET SESSION STORAGE_ENGINE='InnoDB';
set @save_optimizer_switch_for_stat_tables_test=@@optimizer_switch;
set optimizer_switch='extended_keys=on';
set @save_optimizer_use_stat_tables=@@optimizer_use_stat_tables;
set optimizer_use_stat_tables='preferably';
DROP DATABASE IF EXISTS dbt3_s001;
CREATE DATABASE dbt3_s001;
use dbt3_s001;
set @save_optimizer_switch=@@optimizer_switch;
set optimizer_switch='extended_keys=off';
select * from mysql.table_stat;
db_name table_name cardinality
dbt3_s001 customer 150
@ -44,6 +48,101 @@ dbt3_s001 partsupp i_ps_suppkey 1 70
dbt3_s001 region PRIMARY 1 1
dbt3_s001 supplier PRIMARY 1 1
dbt3_s001 supplier i_s_nationkey 1 1.1111111111111112
set optimizer_switch=@save_optimizer_switch;
set @save_optimizer_switch=@@optimizer_switch;
set optimizer_switch='index_condition_pushdown=off';
EXPLAIN select n_name, sum(l_extendedprice * (1 - l_discount)) as revenue
from customer, orders, lineitem, supplier, nation, region
where c_custkey = o_custkey and l_orderkey = o_orderkey
and l_suppkey = s_suppkey and c_nationkey = s_nationkey
and s_nationkey = n_nationkey and n_regionkey = r_regionkey
and r_name = 'AMERICA' and o_orderdate >= date '1995-01-01'
and o_orderdate < date '1995-01-01' + interval '1' year
group by n_name
order by revenue desc;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE orders range PRIMARY,i_o_orderdate,i_o_custkey i_o_orderdate 4 NULL 211 Using where; Using temporary; Using filesort
1 SIMPLE customer eq_ref PRIMARY,i_c_nationkey PRIMARY 4 dbt3_s001.orders.o_custkey 1 Using where
1 SIMPLE nation eq_ref PRIMARY,i_n_regionkey PRIMARY 4 dbt3_s001.customer.c_nationkey 1
1 SIMPLE supplier ref PRIMARY,i_s_nationkey i_s_nationkey 5 dbt3_s001.customer.c_nationkey 1 Using index
1 SIMPLE region ALL PRIMARY NULL NULL NULL 5 Using where; Using join buffer (flat, BNL join)
1 SIMPLE lineitem ref PRIMARY,i_l_suppkey,i_l_orderkey,i_l_orderkey_quantity PRIMARY 4 dbt3_s001.orders.o_orderkey 4 Using where
select n_name, sum(l_extendedprice * (1 - l_discount)) as revenue
from customer, orders, lineitem, supplier, nation, region
where c_custkey = o_custkey and l_orderkey = o_orderkey
and l_suppkey = s_suppkey and c_nationkey = s_nationkey
and s_nationkey = n_nationkey and n_regionkey = r_regionkey
and r_name = 'AMERICA' and o_orderdate >= date '1995-01-01'
and o_orderdate < date '1995-01-01' + interval '1' year
group by n_name
order by revenue desc;
n_name revenue
PERU 321915.8715
ARGENTINA 69817.1451
set optimizer_switch=@save_optimizer_switch;
delete from mysql.index_stat;
select * from mysql.table_stat;
db_name table_name cardinality
dbt3_s001 customer 150
dbt3_s001 lineitem 6005
dbt3_s001 nation 25
dbt3_s001 orders 1500
dbt3_s001 part 200
dbt3_s001 partsupp 700
dbt3_s001 region 5
dbt3_s001 supplier 10
select * from mysql.index_stat;
db_name table_name index_name prefix_arity avg_frequency
dbt3_s001 customer PRIMARY 1 1
dbt3_s001 customer i_c_nationkey 1 6
dbt3_s001 customer i_c_nationkey 2 1
dbt3_s001 lineitem PRIMARY 1 4.003333333333333
dbt3_s001 lineitem PRIMARY 2 1
dbt3_s001 lineitem i_l_shipdate 1 2.650044130626655
dbt3_s001 lineitem i_l_shipdate 2 1.014872401554842
dbt3_s001 lineitem i_l_shipdate 3 1
dbt3_s001 lineitem i_l_suppkey_partkey 1 30.025
dbt3_s001 lineitem i_l_suppkey_partkey 2 8.57857142857143
dbt3_s001 lineitem i_l_suppkey_partkey 3 1.0030065141139135
dbt3_s001 lineitem i_l_suppkey_partkey 4 1
dbt3_s001 lineitem i_l_partkey 1 30.025
dbt3_s001 lineitem i_l_partkey 2 1.008904569892473
dbt3_s001 lineitem i_l_partkey 3 1
dbt3_s001 lineitem i_l_suppkey 1 600.5
dbt3_s001 lineitem i_l_suppkey 2 1.207277844792923
dbt3_s001 lineitem i_l_suppkey 3 1
dbt3_s001 lineitem i_l_receiptdate 1 2.6477072310405645
dbt3_s001 lineitem i_l_receiptdate 2 1.0152155536770922
dbt3_s001 lineitem i_l_receiptdate 3 1
dbt3_s001 lineitem i_l_orderkey 1 4.003333333333333
dbt3_s001 lineitem i_l_orderkey 2 1
dbt3_s001 lineitem i_l_orderkey_quantity 1 4.003333333333333
dbt3_s001 lineitem i_l_orderkey_quantity 2 1.0403672903672905
dbt3_s001 lineitem i_l_orderkey_quantity 3 1
dbt3_s001 lineitem i_l_commitdate 1 2.7159656264133876
dbt3_s001 lineitem i_l_commitdate 2 1.036416983085951
dbt3_s001 lineitem i_l_commitdate 3 1
dbt3_s001 nation PRIMARY 1 1
dbt3_s001 nation i_n_regionkey 1 5
dbt3_s001 nation i_n_regionkey 2 1
dbt3_s001 orders PRIMARY 1 1
dbt3_s001 orders i_o_orderdate 1 1.3321492007104796
dbt3_s001 orders i_o_orderdate 2 1
dbt3_s001 orders i_o_custkey 1 15
dbt3_s001 orders i_o_custkey 2 1
dbt3_s001 part PRIMARY 1 1
dbt3_s001 part i_p_retailprice 1 1
dbt3_s001 part i_p_retailprice 2 1
dbt3_s001 partsupp PRIMARY 1 3.5
dbt3_s001 partsupp PRIMARY 2 1
dbt3_s001 partsupp i_ps_partkey 1 3.5
dbt3_s001 partsupp i_ps_partkey 2 1
dbt3_s001 partsupp i_ps_suppkey 1 70
dbt3_s001 partsupp i_ps_suppkey 2 1
dbt3_s001 region PRIMARY 1 1
dbt3_s001 supplier PRIMARY 1 1
dbt3_s001 supplier i_s_nationkey 1 1.1111111111111112
dbt3_s001 supplier i_s_nationkey 2 1
set @save_optimizer_switch=@@optimizer_switch;
set optimizer_switch='index_condition_pushdown=off';
EXPLAIN select n_name, sum(l_extendedprice * (1 - l_discount)) as revenue
@ -228,4 +327,5 @@ set optimizer_switch=@save_optimizer_switch;
DROP DATABASE dbt3_s001;
use test;
set optimizer_use_stat_tables=@save_optimizer_use_stat_tables;
set optimizer_switch=@save_optimizer_switch_for_stat_tables_test;
SET SESSION STORAGE_ENGINE=DEFAULT;