mirror of
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Merge.
This commit is contained in:
Igor Babaev
commit
d51ee6d412
6 changed files with 257 additions and 40 deletions
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@ -68,17 +68,17 @@ order by
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s_acctbal desc, n_name, s_name, p_partkey;
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id select_type table type possible_keys key key_len ref rows filtered Extra
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1 PRIMARY part ALL PRIMARY NULL NULL NULL 200 0.31 Using where; Using temporary; Using filesort
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1 PRIMARY region ALL PRIMARY NULL NULL NULL 5 20.00 Using where; Using join buffer (flat, BNL join)
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1 PRIMARY partsupp ref PRIMARY,i_ps_partkey,i_ps_suppkey PRIMARY 4 dbt3_s001.part.p_partkey 3 100.00 Using where
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1 PRIMARY supplier ALL PRIMARY,i_s_nationkey NULL NULL NULL 10 80.00 Using where; Using join buffer (flat, BNL join)
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1 PRIMARY supplier eq_ref PRIMARY,i_s_nationkey PRIMARY 4 dbt3_s001.partsupp.ps_suppkey 1 100.00 Using where
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1 PRIMARY nation eq_ref PRIMARY,i_n_regionkey PRIMARY 4 dbt3_s001.supplier.s_nationkey 1 100.00 Using where
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1 PRIMARY region eq_ref PRIMARY PRIMARY 4 dbt3_s001.nation.n_regionkey 1 20.00 Using where
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2 DEPENDENT SUBQUERY region ALL PRIMARY NULL NULL NULL 5 20.00 Using where
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2 DEPENDENT SUBQUERY partsupp ref PRIMARY,i_ps_partkey,i_ps_suppkey PRIMARY 4 dbt3_s001.part.p_partkey 3 100.00
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2 DEPENDENT SUBQUERY supplier eq_ref PRIMARY,i_s_nationkey PRIMARY 4 dbt3_s001.partsupp.ps_suppkey 1 100.00 Using where
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2 DEPENDENT SUBQUERY nation eq_ref PRIMARY,i_n_regionkey PRIMARY 4 dbt3_s001.supplier.s_nationkey 1 100.00 Using where
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Warnings:
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Note 1276 Field or reference 'dbt3_s001.part.p_partkey' of SELECT #2 was resolved in SELECT #1
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Note 1003 select `dbt3_s001`.`supplier`.`s_acctbal` AS `s_acctbal`,`dbt3_s001`.`supplier`.`s_name` AS `s_name`,`dbt3_s001`.`nation`.`n_name` AS `n_name`,`dbt3_s001`.`part`.`p_partkey` AS `p_partkey`,`dbt3_s001`.`part`.`p_mfgr` AS `p_mfgr`,`dbt3_s001`.`supplier`.`s_address` AS `s_address`,`dbt3_s001`.`supplier`.`s_phone` AS `s_phone`,`dbt3_s001`.`supplier`.`s_comment` AS `s_comment` from `dbt3_s001`.`part` join `dbt3_s001`.`supplier` join `dbt3_s001`.`partsupp` join `dbt3_s001`.`nation` join `dbt3_s001`.`region` where ((`dbt3_s001`.`partsupp`.`ps_partkey` = `dbt3_s001`.`part`.`p_partkey`) and (`dbt3_s001`.`supplier`.`s_suppkey` = `dbt3_s001`.`partsupp`.`ps_suppkey`) and (`dbt3_s001`.`part`.`p_size` = 9) and (`dbt3_s001`.`nation`.`n_nationkey` = `dbt3_s001`.`supplier`.`s_nationkey`) and (`dbt3_s001`.`nation`.`n_regionkey` = `dbt3_s001`.`region`.`r_regionkey`) and (`dbt3_s001`.`region`.`r_name` = 'ASIA') and (`dbt3_s001`.`part`.`p_type` like '%TIN') and (`dbt3_s001`.`partsupp`.`ps_supplycost` = <expr_cache><`dbt3_s001`.`part`.`p_partkey`>((select min(`dbt3_s001`.`partsupp`.`ps_supplycost`) from `dbt3_s001`.`partsupp` join `dbt3_s001`.`supplier` join `dbt3_s001`.`nation` join `dbt3_s001`.`region` where ((`dbt3_s001`.`supplier`.`s_suppkey` = `dbt3_s001`.`partsupp`.`ps_suppkey`) and (`dbt3_s001`.`nation`.`n_nationkey` = `dbt3_s001`.`supplier`.`s_nationkey`) and (`dbt3_s001`.`nation`.`n_regionkey` = `dbt3_s001`.`region`.`r_regionkey`) and (`dbt3_s001`.`region`.`r_name` = 'ASIA') and (`dbt3_s001`.`part`.`p_partkey` = `dbt3_s001`.`partsupp`.`ps_partkey`)))))) order by `dbt3_s001`.`supplier`.`s_acctbal` desc,`dbt3_s001`.`nation`.`n_name`,`dbt3_s001`.`supplier`.`s_name`,`dbt3_s001`.`part`.`p_partkey`
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Note 1003 select `dbt3_s001`.`supplier`.`s_acctbal` AS `s_acctbal`,`dbt3_s001`.`supplier`.`s_name` AS `s_name`,`dbt3_s001`.`nation`.`n_name` AS `n_name`,`dbt3_s001`.`part`.`p_partkey` AS `p_partkey`,`dbt3_s001`.`part`.`p_mfgr` AS `p_mfgr`,`dbt3_s001`.`supplier`.`s_address` AS `s_address`,`dbt3_s001`.`supplier`.`s_phone` AS `s_phone`,`dbt3_s001`.`supplier`.`s_comment` AS `s_comment` from `dbt3_s001`.`part` join `dbt3_s001`.`supplier` join `dbt3_s001`.`partsupp` join `dbt3_s001`.`nation` join `dbt3_s001`.`region` where ((`dbt3_s001`.`partsupp`.`ps_partkey` = `dbt3_s001`.`part`.`p_partkey`) and (`dbt3_s001`.`supplier`.`s_suppkey` = `dbt3_s001`.`partsupp`.`ps_suppkey`) and (`dbt3_s001`.`part`.`p_size` = 9) and (`dbt3_s001`.`nation`.`n_nationkey` = `dbt3_s001`.`supplier`.`s_nationkey`) and (`dbt3_s001`.`region`.`r_regionkey` = `dbt3_s001`.`nation`.`n_regionkey`) and (`dbt3_s001`.`region`.`r_name` = 'ASIA') and (`dbt3_s001`.`part`.`p_type` like '%TIN') and (`dbt3_s001`.`partsupp`.`ps_supplycost` = <expr_cache><`dbt3_s001`.`part`.`p_partkey`>((select min(`dbt3_s001`.`partsupp`.`ps_supplycost`) from `dbt3_s001`.`partsupp` join `dbt3_s001`.`supplier` join `dbt3_s001`.`nation` join `dbt3_s001`.`region` where ((`dbt3_s001`.`supplier`.`s_suppkey` = `dbt3_s001`.`partsupp`.`ps_suppkey`) and (`dbt3_s001`.`nation`.`n_nationkey` = `dbt3_s001`.`supplier`.`s_nationkey`) and (`dbt3_s001`.`nation`.`n_regionkey` = `dbt3_s001`.`region`.`r_regionkey`) and (`dbt3_s001`.`region`.`r_name` = 'ASIA') and (`dbt3_s001`.`part`.`p_partkey` = `dbt3_s001`.`partsupp`.`ps_partkey`)))))) order by `dbt3_s001`.`supplier`.`s_acctbal` desc,`dbt3_s001`.`nation`.`n_name`,`dbt3_s001`.`supplier`.`s_name`,`dbt3_s001`.`part`.`p_partkey`
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set optimizer_use_condition_selectivity=4;
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explain extended
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select
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@ -109,17 +109,17 @@ order by
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s_acctbal desc, n_name, s_name, p_partkey;
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id select_type table type possible_keys key key_len ref rows filtered Extra
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1 PRIMARY region ALL PRIMARY NULL NULL NULL 5 20.00 Using where; Using temporary; Using filesort
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1 PRIMARY nation ref PRIMARY,i_n_regionkey i_n_regionkey 5 dbt3_s001.region.r_regionkey 5 100.00
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1 PRIMARY supplier ref PRIMARY,i_s_nationkey i_s_nationkey 5 dbt3_s001.nation.n_nationkey 1 100.00
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1 PRIMARY part ALL PRIMARY NULL NULL NULL 200 2.08 Using where; Using join buffer (flat, BNL join)
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1 PRIMARY partsupp ref PRIMARY,i_ps_partkey,i_ps_suppkey PRIMARY 4 dbt3_s001.part.p_partkey 3 100.00 Using where
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1 PRIMARY supplier ALL PRIMARY,i_s_nationkey NULL NULL NULL 10 80.00 Using where; Using join buffer (flat, BNL join)
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1 PRIMARY nation eq_ref PRIMARY,i_n_regionkey PRIMARY 4 dbt3_s001.supplier.s_nationkey 1 100.00 Using where
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1 PRIMARY partsupp eq_ref PRIMARY,i_ps_partkey,i_ps_suppkey PRIMARY 8 dbt3_s001.part.p_partkey,dbt3_s001.supplier.s_suppkey 1 100.00 Using where
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2 DEPENDENT SUBQUERY region ALL PRIMARY NULL NULL NULL 5 20.00 Using where
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2 DEPENDENT SUBQUERY partsupp ref PRIMARY,i_ps_partkey,i_ps_suppkey PRIMARY 4 dbt3_s001.part.p_partkey 3 100.00
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2 DEPENDENT SUBQUERY supplier eq_ref PRIMARY,i_s_nationkey PRIMARY 4 dbt3_s001.partsupp.ps_suppkey 1 100.00 Using where
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2 DEPENDENT SUBQUERY nation eq_ref PRIMARY,i_n_regionkey PRIMARY 4 dbt3_s001.supplier.s_nationkey 1 100.00 Using where
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Warnings:
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Note 1276 Field or reference 'dbt3_s001.part.p_partkey' of SELECT #2 was resolved in SELECT #1
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Note 1003 select `dbt3_s001`.`supplier`.`s_acctbal` AS `s_acctbal`,`dbt3_s001`.`supplier`.`s_name` AS `s_name`,`dbt3_s001`.`nation`.`n_name` AS `n_name`,`dbt3_s001`.`part`.`p_partkey` AS `p_partkey`,`dbt3_s001`.`part`.`p_mfgr` AS `p_mfgr`,`dbt3_s001`.`supplier`.`s_address` AS `s_address`,`dbt3_s001`.`supplier`.`s_phone` AS `s_phone`,`dbt3_s001`.`supplier`.`s_comment` AS `s_comment` from `dbt3_s001`.`part` join `dbt3_s001`.`supplier` join `dbt3_s001`.`partsupp` join `dbt3_s001`.`nation` join `dbt3_s001`.`region` where ((`dbt3_s001`.`partsupp`.`ps_partkey` = `dbt3_s001`.`part`.`p_partkey`) and (`dbt3_s001`.`supplier`.`s_suppkey` = `dbt3_s001`.`partsupp`.`ps_suppkey`) and (`dbt3_s001`.`part`.`p_size` = 9) and (`dbt3_s001`.`nation`.`n_nationkey` = `dbt3_s001`.`supplier`.`s_nationkey`) and (`dbt3_s001`.`nation`.`n_regionkey` = `dbt3_s001`.`region`.`r_regionkey`) and (`dbt3_s001`.`region`.`r_name` = 'ASIA') and (`dbt3_s001`.`part`.`p_type` like '%TIN') and (`dbt3_s001`.`partsupp`.`ps_supplycost` = <expr_cache><`dbt3_s001`.`part`.`p_partkey`>((select min(`dbt3_s001`.`partsupp`.`ps_supplycost`) from `dbt3_s001`.`partsupp` join `dbt3_s001`.`supplier` join `dbt3_s001`.`nation` join `dbt3_s001`.`region` where ((`dbt3_s001`.`supplier`.`s_suppkey` = `dbt3_s001`.`partsupp`.`ps_suppkey`) and (`dbt3_s001`.`nation`.`n_nationkey` = `dbt3_s001`.`supplier`.`s_nationkey`) and (`dbt3_s001`.`nation`.`n_regionkey` = `dbt3_s001`.`region`.`r_regionkey`) and (`dbt3_s001`.`region`.`r_name` = 'ASIA') and (`dbt3_s001`.`part`.`p_partkey` = `dbt3_s001`.`partsupp`.`ps_partkey`)))))) order by `dbt3_s001`.`supplier`.`s_acctbal` desc,`dbt3_s001`.`nation`.`n_name`,`dbt3_s001`.`supplier`.`s_name`,`dbt3_s001`.`part`.`p_partkey`
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Note 1003 select `dbt3_s001`.`supplier`.`s_acctbal` AS `s_acctbal`,`dbt3_s001`.`supplier`.`s_name` AS `s_name`,`dbt3_s001`.`nation`.`n_name` AS `n_name`,`dbt3_s001`.`part`.`p_partkey` AS `p_partkey`,`dbt3_s001`.`part`.`p_mfgr` AS `p_mfgr`,`dbt3_s001`.`supplier`.`s_address` AS `s_address`,`dbt3_s001`.`supplier`.`s_phone` AS `s_phone`,`dbt3_s001`.`supplier`.`s_comment` AS `s_comment` from `dbt3_s001`.`part` join `dbt3_s001`.`supplier` join `dbt3_s001`.`partsupp` join `dbt3_s001`.`nation` join `dbt3_s001`.`region` where ((`dbt3_s001`.`partsupp`.`ps_partkey` = `dbt3_s001`.`part`.`p_partkey`) and (`dbt3_s001`.`partsupp`.`ps_suppkey` = `dbt3_s001`.`supplier`.`s_suppkey`) and (`dbt3_s001`.`part`.`p_size` = 9) and (`dbt3_s001`.`supplier`.`s_nationkey` = `dbt3_s001`.`nation`.`n_nationkey`) and (`dbt3_s001`.`nation`.`n_regionkey` = `dbt3_s001`.`region`.`r_regionkey`) and (`dbt3_s001`.`region`.`r_name` = 'ASIA') and (`dbt3_s001`.`part`.`p_type` like '%TIN') and (`dbt3_s001`.`partsupp`.`ps_supplycost` = <expr_cache><`dbt3_s001`.`part`.`p_partkey`>((select min(`dbt3_s001`.`partsupp`.`ps_supplycost`) from `dbt3_s001`.`partsupp` join `dbt3_s001`.`supplier` join `dbt3_s001`.`nation` join `dbt3_s001`.`region` where ((`dbt3_s001`.`supplier`.`s_suppkey` = `dbt3_s001`.`partsupp`.`ps_suppkey`) and (`dbt3_s001`.`nation`.`n_nationkey` = `dbt3_s001`.`supplier`.`s_nationkey`) and (`dbt3_s001`.`nation`.`n_regionkey` = `dbt3_s001`.`region`.`r_regionkey`) and (`dbt3_s001`.`region`.`r_name` = 'ASIA') and (`dbt3_s001`.`part`.`p_partkey` = `dbt3_s001`.`partsupp`.`ps_partkey`)))))) order by `dbt3_s001`.`supplier`.`s_acctbal` desc,`dbt3_s001`.`nation`.`n_name`,`dbt3_s001`.`supplier`.`s_name`,`dbt3_s001`.`part`.`p_partkey`
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=== Q15 ===
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create view revenue0 (supplier_no, total_revenue) as
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select l_suppkey, sum(l_extendedprice * (1 - l_discount))
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@ -354,13 +354,13 @@ and o_orderkey = l_orderkey
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group by c_name, c_custkey, o_orderkey, o_orderdate, o_totalprice
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order by o_totalprice desc, o_orderdate;
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id select_type table type possible_keys key key_len ref rows filtered Extra
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1 PRIMARY orders ALL PRIMARY,i_o_custkey NULL NULL NULL 1500 100.00 Using where; Using temporary; Using filesort
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1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 dbt3_s001.orders.o_orderkey 1 100.00
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1 PRIMARY <subquery2> ALL distinct_key NULL NULL NULL 6005 0.00 Using temporary; Using filesort
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1 PRIMARY orders eq_ref PRIMARY,i_o_custkey PRIMARY 4 <subquery2>.l_orderkey 1 100.00 Using where
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1 PRIMARY customer eq_ref PRIMARY PRIMARY 4 dbt3_s001.orders.o_custkey 1 100.00
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1 PRIMARY lineitem ref PRIMARY,i_l_orderkey,i_l_orderkey_quantity i_l_orderkey_quantity 4 dbt3_s001.orders.o_orderkey 4 100.00 Using index
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1 PRIMARY lineitem ref PRIMARY,i_l_orderkey,i_l_orderkey_quantity PRIMARY 4 <subquery2>.l_orderkey 4 100.00
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2 MATERIALIZED lineitem index NULL i_l_orderkey_quantity 13 NULL 6005 100.00 Using index
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Warnings:
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Note 1003 select `dbt3_s001`.`customer`.`c_name` AS `c_name`,`dbt3_s001`.`customer`.`c_custkey` AS `c_custkey`,`dbt3_s001`.`orders`.`o_orderkey` AS `o_orderkey`,`dbt3_s001`.`orders`.`o_orderDATE` AS `o_orderdate`,`dbt3_s001`.`orders`.`o_totalprice` AS `o_totalprice`,sum(`dbt3_s001`.`lineitem`.`l_quantity`) AS `sum(l_quantity)` from <materialize> (select `dbt3_s001`.`lineitem`.`l_orderkey` from `dbt3_s001`.`lineitem` group by `dbt3_s001`.`lineitem`.`l_orderkey` having (sum(`dbt3_s001`.`lineitem`.`l_quantity`) > 250)) join `dbt3_s001`.`customer` join `dbt3_s001`.`orders` join `dbt3_s001`.`lineitem` where ((`dbt3_s001`.`customer`.`c_custkey` = `dbt3_s001`.`orders`.`o_custkey`) and (`<subquery2>`.`l_orderkey` = `dbt3_s001`.`orders`.`o_orderkey`) and (`dbt3_s001`.`lineitem`.`l_orderkey` = `dbt3_s001`.`orders`.`o_orderkey`)) group by `dbt3_s001`.`customer`.`c_name`,`dbt3_s001`.`customer`.`c_custkey`,`dbt3_s001`.`orders`.`o_orderkey`,`dbt3_s001`.`orders`.`o_orderDATE`,`dbt3_s001`.`orders`.`o_totalprice` order by `dbt3_s001`.`orders`.`o_totalprice` desc,`dbt3_s001`.`orders`.`o_orderDATE`
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Note 1003 select `dbt3_s001`.`customer`.`c_name` AS `c_name`,`dbt3_s001`.`customer`.`c_custkey` AS `c_custkey`,`dbt3_s001`.`orders`.`o_orderkey` AS `o_orderkey`,`dbt3_s001`.`orders`.`o_orderDATE` AS `o_orderdate`,`dbt3_s001`.`orders`.`o_totalprice` AS `o_totalprice`,sum(`dbt3_s001`.`lineitem`.`l_quantity`) AS `sum(l_quantity)` from <materialize> (select `dbt3_s001`.`lineitem`.`l_orderkey` from `dbt3_s001`.`lineitem` group by `dbt3_s001`.`lineitem`.`l_orderkey` having (sum(`dbt3_s001`.`lineitem`.`l_quantity`) > 250)) join `dbt3_s001`.`customer` join `dbt3_s001`.`orders` join `dbt3_s001`.`lineitem` where ((`dbt3_s001`.`customer`.`c_custkey` = `dbt3_s001`.`orders`.`o_custkey`) and (`dbt3_s001`.`orders`.`o_orderkey` = `<subquery2>`.`l_orderkey`) and (`dbt3_s001`.`lineitem`.`l_orderkey` = `<subquery2>`.`l_orderkey`)) group by `dbt3_s001`.`customer`.`c_name`,`dbt3_s001`.`customer`.`c_custkey`,`dbt3_s001`.`orders`.`o_orderkey`,`dbt3_s001`.`orders`.`o_orderDATE`,`dbt3_s001`.`orders`.`o_totalprice` order by `dbt3_s001`.`orders`.`o_totalprice` desc,`dbt3_s001`.`orders`.`o_orderDATE`
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select
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c_name, c_custkey, o_orderkey, o_orderdate, o_totalprice, sum(l_quantity)
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from customer, orders, lineitem
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@ -536,14 +536,13 @@ limit 10;
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id select_type table type possible_keys key key_len ref rows filtered Extra
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1 PRIMARY nation ALL PRIMARY NULL NULL NULL 25 4.00 Using where; Using temporary; Using filesort
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1 PRIMARY supplier ref PRIMARY,i_s_nationkey i_s_nationkey 5 dbt3_s001.nation.n_nationkey 1 100.00
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1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1 100.00
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2 MATERIALIZED part ALL PRIMARY NULL NULL NULL 200 4.17 Using where
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2 MATERIALIZED partsupp ref PRIMARY,i_ps_partkey,i_ps_suppkey PRIMARY 4 dbt3_s001.part.p_partkey 3 100.00 Using where
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1 PRIMARY part ALL PRIMARY NULL NULL NULL 200 4.17 Using where; Start temporary; Using join buffer (flat, BNL join)
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1 PRIMARY partsupp eq_ref PRIMARY,i_ps_partkey,i_ps_suppkey PRIMARY 8 dbt3_s001.part.p_partkey,dbt3_s001.supplier.s_suppkey 1 100.00 Using where; End temporary
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4 DEPENDENT SUBQUERY lineitem ref i_l_shipdate,i_l_suppkey_partkey,i_l_partkey,i_l_suppkey i_l_suppkey_partkey 10 dbt3_s001.partsupp.ps_partkey,dbt3_s001.partsupp.ps_suppkey 8 15.14 Using where
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Warnings:
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Note 1276 Field or reference 'dbt3_s001.partsupp.ps_partkey' of SELECT #4 was resolved in SELECT #2
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Note 1276 Field or reference 'dbt3_s001.partsupp.ps_suppkey' of SELECT #4 was resolved in SELECT #2
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Note 1003 select sql_calc_found_rows `dbt3_s001`.`supplier`.`s_name` AS `s_name`,`dbt3_s001`.`supplier`.`s_address` AS `s_address` from `dbt3_s001`.`supplier` semi join (`dbt3_s001`.`part` join `dbt3_s001`.`partsupp`) join `dbt3_s001`.`nation` where ((`dbt3_s001`.`supplier`.`s_nationkey` = `dbt3_s001`.`nation`.`n_nationkey`) and (`dbt3_s001`.`nation`.`n_name` = 'UNITED STATES') and (`dbt3_s001`.`partsupp`.`ps_partkey` = `dbt3_s001`.`part`.`p_partkey`) and (`dbt3_s001`.`partsupp`.`ps_availqty` > <expr_cache><`dbt3_s001`.`partsupp`.`ps_partkey`,`dbt3_s001`.`partsupp`.`ps_suppkey`>((select (0.5 * sum(`dbt3_s001`.`lineitem`.`l_quantity`)) from `dbt3_s001`.`lineitem` where ((`dbt3_s001`.`lineitem`.`l_partkey` = `dbt3_s001`.`partsupp`.`ps_partkey`) and (`dbt3_s001`.`lineitem`.`l_suppkey` = `dbt3_s001`.`partsupp`.`ps_suppkey`) and (`dbt3_s001`.`lineitem`.`l_shipDATE` >= <cache>(cast('1993-01-01' as date))) and (`dbt3_s001`.`lineitem`.`l_shipDATE` < <cache>((cast('1993-01-01' as date) + interval '1' year))))))) and (`dbt3_s001`.`part`.`p_name` like 'g%')) order by `dbt3_s001`.`supplier`.`s_name` limit 10
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Note 1003 select sql_calc_found_rows `dbt3_s001`.`supplier`.`s_name` AS `s_name`,`dbt3_s001`.`supplier`.`s_address` AS `s_address` from `dbt3_s001`.`supplier` semi join (`dbt3_s001`.`part` join `dbt3_s001`.`partsupp`) join `dbt3_s001`.`nation` where ((`dbt3_s001`.`supplier`.`s_nationkey` = `dbt3_s001`.`nation`.`n_nationkey`) and (`dbt3_s001`.`nation`.`n_name` = 'UNITED STATES') and (`dbt3_s001`.`partsupp`.`ps_partkey` = `dbt3_s001`.`part`.`p_partkey`) and (`dbt3_s001`.`partsupp`.`ps_suppkey` = `dbt3_s001`.`supplier`.`s_suppkey`) and (`dbt3_s001`.`partsupp`.`ps_availqty` > <expr_cache><`dbt3_s001`.`partsupp`.`ps_partkey`,`dbt3_s001`.`partsupp`.`ps_suppkey`>((select (0.5 * sum(`dbt3_s001`.`lineitem`.`l_quantity`)) from `dbt3_s001`.`lineitem` where ((`dbt3_s001`.`lineitem`.`l_partkey` = `dbt3_s001`.`partsupp`.`ps_partkey`) and (`dbt3_s001`.`lineitem`.`l_suppkey` = `dbt3_s001`.`partsupp`.`ps_suppkey`) and (`dbt3_s001`.`lineitem`.`l_shipDATE` >= <cache>(cast('1993-01-01' as date))) and (`dbt3_s001`.`lineitem`.`l_shipDATE` < <cache>((cast('1993-01-01' as date) + interval '1' year))))))) and (`dbt3_s001`.`part`.`p_name` like 'g%')) order by `dbt3_s001`.`supplier`.`s_name` limit 10
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select sql_calc_found_rows
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s_name, s_address
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from supplier, nation
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@ -592,7 +591,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
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1 PRIMARY nation ALL PRIMARY NULL NULL NULL 25 4.00 Using where; Using temporary; Using filesort
|
||||
1 PRIMARY supplier ref PRIMARY,i_s_nationkey i_s_nationkey 5 dbt3_s001.nation.n_nationkey 1 100.00
|
||||
1 PRIMARY part ALL PRIMARY NULL NULL NULL 200 7.03 Using where
|
||||
1 PRIMARY partsupp ref PRIMARY,i_ps_partkey,i_ps_suppkey i_ps_partkey 4 dbt3_s001.part.p_partkey 3 100.00 Using where; FirstMatch(supplier)
|
||||
1 PRIMARY partsupp eq_ref PRIMARY,i_ps_partkey,i_ps_suppkey PRIMARY 8 dbt3_s001.part.p_partkey,dbt3_s001.supplier.s_suppkey 1 100.00 Using where; FirstMatch(supplier)
|
||||
4 DEPENDENT SUBQUERY lineitem ref i_l_shipdate,i_l_suppkey_partkey,i_l_partkey,i_l_suppkey i_l_suppkey_partkey 10 dbt3_s001.partsupp.ps_partkey,dbt3_s001.partsupp.ps_suppkey 8 15.14 Using where
|
||||
Warnings:
|
||||
Note 1276 Field or reference 'dbt3_s001.partsupp.ps_partkey' of SELECT #4 was resolved in SELECT #2
|
||||
|
|
@ -646,7 +645,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
|
|||
1 PRIMARY nation ALL PRIMARY NULL NULL NULL 25 4.00 Using where; Using temporary; Using filesort
|
||||
1 PRIMARY supplier ref PRIMARY,i_s_nationkey i_s_nationkey 5 dbt3_s001.nation.n_nationkey 1 100.00
|
||||
1 PRIMARY part ALL PRIMARY NULL NULL NULL 200 7.81 Using where
|
||||
1 PRIMARY partsupp ref PRIMARY,i_ps_partkey,i_ps_suppkey i_ps_partkey 4 dbt3_s001.part.p_partkey 3 100.00 Using where; FirstMatch(supplier)
|
||||
1 PRIMARY partsupp eq_ref PRIMARY,i_ps_partkey,i_ps_suppkey PRIMARY 8 dbt3_s001.part.p_partkey,dbt3_s001.supplier.s_suppkey 1 100.00 Using where; FirstMatch(supplier)
|
||||
4 DEPENDENT SUBQUERY lineitem ref i_l_shipdate,i_l_suppkey_partkey,i_l_partkey,i_l_suppkey i_l_suppkey_partkey 10 dbt3_s001.partsupp.ps_partkey,dbt3_s001.partsupp.ps_suppkey 8 15.14 Using where
|
||||
Warnings:
|
||||
Note 1276 Field or reference 'dbt3_s001.partsupp.ps_partkey' of SELECT #4 was resolved in SELECT #2
|
||||
|
|
@ -700,7 +699,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
|
|||
1 PRIMARY nation ALL PRIMARY NULL NULL NULL 25 4.00 Using where; Using temporary; Using filesort
|
||||
1 PRIMARY supplier ref PRIMARY,i_s_nationkey i_s_nationkey 5 dbt3_s001.nation.n_nationkey 1 100.00
|
||||
1 PRIMARY part ALL PRIMARY NULL NULL NULL 200 7.81 Using where
|
||||
1 PRIMARY partsupp ref PRIMARY,i_ps_partkey,i_ps_suppkey i_ps_partkey 4 dbt3_s001.part.p_partkey 3 100.00 Using where; FirstMatch(supplier)
|
||||
1 PRIMARY partsupp eq_ref PRIMARY,i_ps_partkey,i_ps_suppkey PRIMARY 8 dbt3_s001.part.p_partkey,dbt3_s001.supplier.s_suppkey 1 100.00 Using where; FirstMatch(supplier)
|
||||
4 DEPENDENT SUBQUERY lineitem ref i_l_shipdate,i_l_suppkey_partkey,i_l_partkey,i_l_suppkey i_l_suppkey_partkey 10 dbt3_s001.partsupp.ps_partkey,dbt3_s001.partsupp.ps_suppkey 8 15.14 Using where
|
||||
Warnings:
|
||||
Note 1276 Field or reference 'dbt3_s001.partsupp.ps_partkey' of SELECT #4 was resolved in SELECT #2
|
||||
|
|
@ -1220,3 +1219,73 @@ Note 1003 select `test`.`language`.`lang_group` AS `lang_group`,`test`.`language
|
|||
set optimizer_use_condition_selectivity=@save_optimizer_use_condition_selectivity;
|
||||
drop table language, country, continent;
|
||||
set use_stat_tables=@save_use_stat_tables;
|
||||
#
|
||||
# Bug mdev-5191: performance degradation due to a suboptimal chosen plan
|
||||
# when optimizer_use_condition_selectivity=3
|
||||
#
|
||||
set use_stat_tables = 'preferably';
|
||||
set @@RAND_SEED1=810763568, @@RAND_SEED2=600681772;
|
||||
set TIMESTAMP=1394806993;
|
||||
create table t1 (a int, b int) engine=myisam;
|
||||
insert t1 values (rand()*1e5, rand()*1e5);
|
||||
insert t1 select rand()*1e5, rand()*1e5 from t1;
|
||||
insert t1 select rand()*1e5, rand()*1e5 from t1;
|
||||
insert t1 select rand()*1e5, rand()*1e5 from t1;
|
||||
insert t1 select rand()*1e5, rand()*1e5 from t1;
|
||||
insert t1 select rand()*1e5, rand()*1e5 from t1;
|
||||
insert t1 select rand()*1e5, rand()*1e5 from t1;
|
||||
insert t1 select rand()*1e5, rand()*1e5 from t1;
|
||||
insert t1 select rand()*1e5, rand()*1e5 from t1;
|
||||
insert t1 select rand()*1e5, rand()*1e5 from t1;
|
||||
insert t1 select rand()*1e5, rand()*1e5 from t1;
|
||||
insert t1 select rand()*1e5, rand()*1e5 from t1;
|
||||
insert t1 select rand()*1e5, rand()*1e5 from t1;
|
||||
insert t1 select rand()*1e5, rand()*1e5 from t1;
|
||||
insert t1 select rand()*1e5, rand()*1e5 from t1;
|
||||
insert t1 select rand()*1e5, rand()*1e5 from t1;
|
||||
insert t1 select rand()*1e5, rand()*1e5 from t1;
|
||||
insert t1 select rand()*1e5, rand()*1e5 from t1;
|
||||
insert t1 select rand()*1e5, rand()*1e5 from t1;
|
||||
create table t2 (c int, d int, key(c), key(d)) engine=myisam;
|
||||
insert t2 select floor(rand()*1e5/2)*2, floor(rand()*1e5/3)*3 from t1;
|
||||
analyze table t1,t2;
|
||||
Table Op Msg_type Msg_text
|
||||
test.t1 analyze status OK
|
||||
test.t2 analyze status Table is already up to date
|
||||
set optimizer_use_condition_selectivity=1;
|
||||
explain extended
|
||||
select * from t1, t2, t1 as t3
|
||||
where t1.b=t2.c and t2.d=t3.a and t3.b<5 and t1.a < 2000;
|
||||
id select_type table type possible_keys key key_len ref rows filtered Extra
|
||||
1 SIMPLE t1 ALL NULL NULL NULL NULL 262144 100.00 Using where
|
||||
1 SIMPLE t2 ref c,d c 5 test.t1.b 5 100.00
|
||||
1 SIMPLE t3 ALL NULL NULL NULL NULL 262144 100.00 Using where; Using join buffer (flat, BNL join)
|
||||
Warnings:
|
||||
Note 1003 select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b`,`test`.`t2`.`c` AS `c`,`test`.`t2`.`d` AS `d`,`test`.`t3`.`a` AS `a`,`test`.`t3`.`b` AS `b` from `test`.`t1` join `test`.`t2` join `test`.`t1` `t3` where ((`test`.`t2`.`c` = `test`.`t1`.`b`) and (`test`.`t3`.`a` = `test`.`t2`.`d`) and (`test`.`t3`.`b` < 5) and (`test`.`t1`.`a` < 2000))
|
||||
select * from t1, t2, t1 as t3
|
||||
where t1.b=t2.c and t2.d=t3.a and t3.b<5 and t1.a < 2000;
|
||||
a b c d a b
|
||||
1495 89366 89366 28296 28296 3
|
||||
961 24512 24512 85239 85239 4
|
||||
1063 89366 89366 28296 28296 3
|
||||
221 56120 56120 28296 28296 3
|
||||
set optimizer_use_condition_selectivity=3;
|
||||
explain extended
|
||||
select * from t1, t2, t1 as t3
|
||||
where t1.b=t2.c and t2.d=t3.a and t3.b<5 and t1.a < 2000;
|
||||
id select_type table type possible_keys key key_len ref rows filtered Extra
|
||||
1 SIMPLE t3 ALL NULL NULL NULL NULL 262144 0.00 Using where
|
||||
1 SIMPLE t2 ref c,d d 5 test.t3.a 7 100.00
|
||||
1 SIMPLE t1 ALL NULL NULL NULL NULL 262144 2.00 Using where; Using join buffer (flat, BNL join)
|
||||
Warnings:
|
||||
Note 1003 select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b`,`test`.`t2`.`c` AS `c`,`test`.`t2`.`d` AS `d`,`test`.`t3`.`a` AS `a`,`test`.`t3`.`b` AS `b` from `test`.`t1` join `test`.`t2` join `test`.`t1` `t3` where ((`test`.`t1`.`b` = `test`.`t2`.`c`) and (`test`.`t2`.`d` = `test`.`t3`.`a`) and (`test`.`t3`.`b` < 5) and (`test`.`t1`.`a` < 2000))
|
||||
select * from t1, t2, t1 as t3
|
||||
where t1.b=t2.c and t2.d=t3.a and t3.b<5 and t1.a < 2000;
|
||||
a b c d a b
|
||||
961 24512 24512 85239 85239 4
|
||||
1495 89366 89366 28296 28296 3
|
||||
1063 89366 89366 28296 28296 3
|
||||
221 56120 56120 28296 28296 3
|
||||
set optimizer_use_condition_selectivity=@save_optimizer_use_condition_selectivity;
|
||||
drop table t1,t2;
|
||||
set use_stat_tables=@save_use_stat_tables;
|
||||
|
|
|
|||
|
|
@ -73,7 +73,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
|
|||
1 PRIMARY part ALL PRIMARY NULL NULL NULL 200 0.31 Using where; Using temporary; Using filesort
|
||||
1 PRIMARY region ALL PRIMARY NULL NULL NULL 5 20.00 Using where; Using join buffer (flat, BNL join)
|
||||
1 PRIMARY partsupp ref PRIMARY,i_ps_partkey,i_ps_suppkey PRIMARY 4 dbt3_s001.part.p_partkey 3 100.00 Using where
|
||||
1 PRIMARY supplier ALL PRIMARY,i_s_nationkey NULL NULL NULL 10 80.00 Using where; Using join buffer (flat, BNL join)
|
||||
1 PRIMARY supplier eq_ref PRIMARY,i_s_nationkey PRIMARY 4 dbt3_s001.partsupp.ps_suppkey 1 100.00 Using where
|
||||
1 PRIMARY nation eq_ref PRIMARY,i_n_regionkey PRIMARY 4 dbt3_s001.supplier.s_nationkey 1 100.00 Using where
|
||||
2 DEPENDENT SUBQUERY region ALL PRIMARY NULL NULL NULL 5 20.00 Using where
|
||||
2 DEPENDENT SUBQUERY partsupp ref PRIMARY,i_ps_partkey,i_ps_suppkey PRIMARY 4 dbt3_s001.part.p_partkey 3 100.00
|
||||
|
|
@ -114,7 +114,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
|
|||
1 PRIMARY region ALL PRIMARY NULL NULL NULL 5 20.00 Using where; Using temporary; Using filesort
|
||||
1 PRIMARY part ALL PRIMARY NULL NULL NULL 200 2.08 Using where; Using join buffer (flat, BNL join)
|
||||
1 PRIMARY partsupp ref PRIMARY,i_ps_partkey,i_ps_suppkey PRIMARY 4 dbt3_s001.part.p_partkey 3 100.00 Using where
|
||||
1 PRIMARY supplier ALL PRIMARY,i_s_nationkey NULL NULL NULL 10 80.00 Using where; Using join buffer (flat, BNL join)
|
||||
1 PRIMARY supplier eq_ref PRIMARY,i_s_nationkey PRIMARY 4 dbt3_s001.partsupp.ps_suppkey 1 100.00 Using where
|
||||
1 PRIMARY nation eq_ref PRIMARY,i_n_regionkey PRIMARY 4 dbt3_s001.supplier.s_nationkey 1 100.00 Using where
|
||||
2 DEPENDENT SUBQUERY region ALL PRIMARY NULL NULL NULL 5 20.00 Using where
|
||||
2 DEPENDENT SUBQUERY partsupp ref PRIMARY,i_ps_partkey,i_ps_suppkey PRIMARY 4 dbt3_s001.part.p_partkey 3 100.00
|
||||
|
|
@ -164,7 +164,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
|
|||
1 PRIMARY supplier index PRIMARY PRIMARY 4 NULL 10 100.00
|
||||
1 PRIMARY <derived3> ref key0 key0 5 dbt3_s001.supplier.s_suppkey 10 100.00 Using where
|
||||
3 DERIVED lineitem range i_l_shipdate i_l_shipdate 4 NULL 228 100.00 Using where; Using temporary; Using filesort
|
||||
2 SUBQUERY <derived4> ALL NULL NULL NULL NULL 228 100.00
|
||||
2 SUBQUERY <derived4> ALL NULL NULL NULL NULL 227 100.00
|
||||
4 DERIVED lineitem range i_l_shipdate i_l_shipdate 4 NULL 228 100.00 Using where; Using temporary; Using filesort
|
||||
Warnings:
|
||||
Note 1003 select `dbt3_s001`.`supplier`.`s_suppkey` AS `s_suppkey`,`dbt3_s001`.`supplier`.`s_name` AS `s_name`,`dbt3_s001`.`supplier`.`s_address` AS `s_address`,`dbt3_s001`.`supplier`.`s_phone` AS `s_phone`,`revenue0`.`total_revenue` AS `total_revenue` from `dbt3_s001`.`supplier` join `dbt3_s001`.`revenue0` where ((`revenue0`.`supplier_no` = `dbt3_s001`.`supplier`.`s_suppkey`) and (`revenue0`.`total_revenue` = (select max(`revenue0`.`total_revenue`) from `dbt3_s001`.`revenue0`))) order by `dbt3_s001`.`supplier`.`s_suppkey`
|
||||
|
|
@ -357,13 +357,13 @@ and o_orderkey = l_orderkey
|
|||
group by c_name, c_custkey, o_orderkey, o_orderdate, o_totalprice
|
||||
order by o_totalprice desc, o_orderdate;
|
||||
id select_type table type possible_keys key key_len ref rows filtered Extra
|
||||
1 PRIMARY orders ALL PRIMARY,i_o_custkey NULL NULL NULL 1500 100.00 Using where; Using temporary; Using filesort
|
||||
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 dbt3_s001.orders.o_orderkey 1 100.00
|
||||
1 PRIMARY <subquery2> ALL distinct_key NULL NULL NULL 6005 0.00 Using temporary; Using filesort
|
||||
1 PRIMARY orders eq_ref PRIMARY,i_o_custkey PRIMARY 4 <subquery2>.l_orderkey 1 100.00 Using where
|
||||
1 PRIMARY customer eq_ref PRIMARY PRIMARY 4 dbt3_s001.orders.o_custkey 1 100.00
|
||||
1 PRIMARY lineitem ref PRIMARY,i_l_orderkey,i_l_orderkey_quantity i_l_orderkey_quantity 4 dbt3_s001.orders.o_orderkey 4 100.00 Using index
|
||||
1 PRIMARY lineitem ref PRIMARY,i_l_orderkey,i_l_orderkey_quantity PRIMARY 4 <subquery2>.l_orderkey 4 100.00
|
||||
2 MATERIALIZED lineitem index NULL PRIMARY 8 NULL 6005 100.00
|
||||
Warnings:
|
||||
Note 1003 select `dbt3_s001`.`customer`.`c_name` AS `c_name`,`dbt3_s001`.`customer`.`c_custkey` AS `c_custkey`,`dbt3_s001`.`orders`.`o_orderkey` AS `o_orderkey`,`dbt3_s001`.`orders`.`o_orderDATE` AS `o_orderdate`,`dbt3_s001`.`orders`.`o_totalprice` AS `o_totalprice`,sum(`dbt3_s001`.`lineitem`.`l_quantity`) AS `sum(l_quantity)` from <materialize> (select `dbt3_s001`.`lineitem`.`l_orderkey` from `dbt3_s001`.`lineitem` group by `dbt3_s001`.`lineitem`.`l_orderkey` having (sum(`dbt3_s001`.`lineitem`.`l_quantity`) > 250)) join `dbt3_s001`.`customer` join `dbt3_s001`.`orders` join `dbt3_s001`.`lineitem` where ((`dbt3_s001`.`customer`.`c_custkey` = `dbt3_s001`.`orders`.`o_custkey`) and (`<subquery2>`.`l_orderkey` = `dbt3_s001`.`orders`.`o_orderkey`) and (`dbt3_s001`.`lineitem`.`l_orderkey` = `dbt3_s001`.`orders`.`o_orderkey`)) group by `dbt3_s001`.`customer`.`c_name`,`dbt3_s001`.`customer`.`c_custkey`,`dbt3_s001`.`orders`.`o_orderkey`,`dbt3_s001`.`orders`.`o_orderDATE`,`dbt3_s001`.`orders`.`o_totalprice` order by `dbt3_s001`.`orders`.`o_totalprice` desc,`dbt3_s001`.`orders`.`o_orderDATE`
|
||||
Note 1003 select `dbt3_s001`.`customer`.`c_name` AS `c_name`,`dbt3_s001`.`customer`.`c_custkey` AS `c_custkey`,`dbt3_s001`.`orders`.`o_orderkey` AS `o_orderkey`,`dbt3_s001`.`orders`.`o_orderDATE` AS `o_orderdate`,`dbt3_s001`.`orders`.`o_totalprice` AS `o_totalprice`,sum(`dbt3_s001`.`lineitem`.`l_quantity`) AS `sum(l_quantity)` from <materialize> (select `dbt3_s001`.`lineitem`.`l_orderkey` from `dbt3_s001`.`lineitem` group by `dbt3_s001`.`lineitem`.`l_orderkey` having (sum(`dbt3_s001`.`lineitem`.`l_quantity`) > 250)) join `dbt3_s001`.`customer` join `dbt3_s001`.`orders` join `dbt3_s001`.`lineitem` where ((`dbt3_s001`.`customer`.`c_custkey` = `dbt3_s001`.`orders`.`o_custkey`) and (`dbt3_s001`.`orders`.`o_orderkey` = `<subquery2>`.`l_orderkey`) and (`dbt3_s001`.`lineitem`.`l_orderkey` = `<subquery2>`.`l_orderkey`)) group by `dbt3_s001`.`customer`.`c_name`,`dbt3_s001`.`customer`.`c_custkey`,`dbt3_s001`.`orders`.`o_orderkey`,`dbt3_s001`.`orders`.`o_orderDATE`,`dbt3_s001`.`orders`.`o_totalprice` order by `dbt3_s001`.`orders`.`o_totalprice` desc,`dbt3_s001`.`orders`.`o_orderDATE`
|
||||
select
|
||||
c_name, c_custkey, o_orderkey, o_orderdate, o_totalprice, sum(l_quantity)
|
||||
from customer, orders, lineitem
|
||||
|
|
@ -798,9 +798,10 @@ explain extended
|
|||
select * from t1 where a in ( select b from t2 ) AND ( a > 3 );
|
||||
id select_type table type possible_keys key key_len ref rows filtered Extra
|
||||
1 PRIMARY t1 ALL NULL NULL NULL NULL 1 0.00 Using where
|
||||
1 PRIMARY t2 ALL NULL NULL NULL NULL 2 0.00 Using where; FirstMatch(t1); Using join buffer (flat, BNL join)
|
||||
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1 100.00
|
||||
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 2 0.00
|
||||
Warnings:
|
||||
Note 1003 select `test`.`t1`.`a` AS `a` from `test`.`t1` semi join (`test`.`t2`) where ((`test`.`t2`.`b` = `test`.`t1`.`a`) and (`test`.`t1`.`a` > 3))
|
||||
Note 1003 select `test`.`t1`.`a` AS `a` from `test`.`t1` semi join (`test`.`t2`) where ((`test`.`t1`.`a` > 3))
|
||||
select * from t1 where a in ( select b from t2 ) AND ( a > 3 );
|
||||
a
|
||||
drop table t1,t2;
|
||||
|
|
@ -1228,5 +1229,75 @@ Note 1003 select `test`.`language`.`lang_group` AS `lang_group`,`test`.`language
|
|||
set optimizer_use_condition_selectivity=@save_optimizer_use_condition_selectivity;
|
||||
drop table language, country, continent;
|
||||
set use_stat_tables=@save_use_stat_tables;
|
||||
#
|
||||
# Bug mdev-5191: performance degradation due to a suboptimal chosen plan
|
||||
# when optimizer_use_condition_selectivity=3
|
||||
#
|
||||
set use_stat_tables = 'preferably';
|
||||
set @@RAND_SEED1=810763568, @@RAND_SEED2=600681772;
|
||||
set TIMESTAMP=1394806993;
|
||||
create table t1 (a int, b int) engine=myisam;
|
||||
insert t1 values (rand()*1e5, rand()*1e5);
|
||||
insert t1 select rand()*1e5, rand()*1e5 from t1;
|
||||
insert t1 select rand()*1e5, rand()*1e5 from t1;
|
||||
insert t1 select rand()*1e5, rand()*1e5 from t1;
|
||||
insert t1 select rand()*1e5, rand()*1e5 from t1;
|
||||
insert t1 select rand()*1e5, rand()*1e5 from t1;
|
||||
insert t1 select rand()*1e5, rand()*1e5 from t1;
|
||||
insert t1 select rand()*1e5, rand()*1e5 from t1;
|
||||
insert t1 select rand()*1e5, rand()*1e5 from t1;
|
||||
insert t1 select rand()*1e5, rand()*1e5 from t1;
|
||||
insert t1 select rand()*1e5, rand()*1e5 from t1;
|
||||
insert t1 select rand()*1e5, rand()*1e5 from t1;
|
||||
insert t1 select rand()*1e5, rand()*1e5 from t1;
|
||||
insert t1 select rand()*1e5, rand()*1e5 from t1;
|
||||
insert t1 select rand()*1e5, rand()*1e5 from t1;
|
||||
insert t1 select rand()*1e5, rand()*1e5 from t1;
|
||||
insert t1 select rand()*1e5, rand()*1e5 from t1;
|
||||
insert t1 select rand()*1e5, rand()*1e5 from t1;
|
||||
insert t1 select rand()*1e5, rand()*1e5 from t1;
|
||||
create table t2 (c int, d int, key(c), key(d)) engine=myisam;
|
||||
insert t2 select floor(rand()*1e5/2)*2, floor(rand()*1e5/3)*3 from t1;
|
||||
analyze table t1,t2;
|
||||
Table Op Msg_type Msg_text
|
||||
test.t1 analyze status OK
|
||||
test.t2 analyze status Table is already up to date
|
||||
set optimizer_use_condition_selectivity=1;
|
||||
explain extended
|
||||
select * from t1, t2, t1 as t3
|
||||
where t1.b=t2.c and t2.d=t3.a and t3.b<5 and t1.a < 2000;
|
||||
id select_type table type possible_keys key key_len ref rows filtered Extra
|
||||
1 SIMPLE t1 ALL NULL NULL NULL NULL 262144 100.00 Using where
|
||||
1 SIMPLE t2 ref c,d c 5 test.t1.b 5 100.00
|
||||
1 SIMPLE t3 ALL NULL NULL NULL NULL 262144 100.00 Using where; Using join buffer (flat, BNL join)
|
||||
Warnings:
|
||||
Note 1003 select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b`,`test`.`t2`.`c` AS `c`,`test`.`t2`.`d` AS `d`,`test`.`t3`.`a` AS `a`,`test`.`t3`.`b` AS `b` from `test`.`t1` join `test`.`t2` join `test`.`t1` `t3` where ((`test`.`t2`.`c` = `test`.`t1`.`b`) and (`test`.`t3`.`a` = `test`.`t2`.`d`) and (`test`.`t3`.`b` < 5) and (`test`.`t1`.`a` < 2000))
|
||||
select * from t1, t2, t1 as t3
|
||||
where t1.b=t2.c and t2.d=t3.a and t3.b<5 and t1.a < 2000;
|
||||
a b c d a b
|
||||
1495 89366 89366 28296 28296 3
|
||||
961 24512 24512 85239 85239 4
|
||||
1063 89366 89366 28296 28296 3
|
||||
221 56120 56120 28296 28296 3
|
||||
set optimizer_use_condition_selectivity=3;
|
||||
explain extended
|
||||
select * from t1, t2, t1 as t3
|
||||
where t1.b=t2.c and t2.d=t3.a and t3.b<5 and t1.a < 2000;
|
||||
id select_type table type possible_keys key key_len ref rows filtered Extra
|
||||
1 SIMPLE t3 ALL NULL NULL NULL NULL 262144 0.00 Using where
|
||||
1 SIMPLE t2 ref c,d d 5 test.t3.a 7 100.00
|
||||
1 SIMPLE t1 ALL NULL NULL NULL NULL 262144 2.00 Using where; Using join buffer (flat, BNL join)
|
||||
Warnings:
|
||||
Note 1003 select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b`,`test`.`t2`.`c` AS `c`,`test`.`t2`.`d` AS `d`,`test`.`t3`.`a` AS `a`,`test`.`t3`.`b` AS `b` from `test`.`t1` join `test`.`t2` join `test`.`t1` `t3` where ((`test`.`t1`.`b` = `test`.`t2`.`c`) and (`test`.`t2`.`d` = `test`.`t3`.`a`) and (`test`.`t3`.`b` < 5) and (`test`.`t1`.`a` < 2000))
|
||||
select * from t1, t2, t1 as t3
|
||||
where t1.b=t2.c and t2.d=t3.a and t3.b<5 and t1.a < 2000;
|
||||
a b c d a b
|
||||
961 24512 24512 85239 85239 4
|
||||
1495 89366 89366 28296 28296 3
|
||||
1063 89366 89366 28296 28296 3
|
||||
221 56120 56120 28296 28296 3
|
||||
set optimizer_use_condition_selectivity=@save_optimizer_use_condition_selectivity;
|
||||
drop table t1,t2;
|
||||
set use_stat_tables=@save_use_stat_tables;
|
||||
set optimizer_switch=@save_optimizer_switch_for_selectivity_test;
|
||||
SET SESSION STORAGE_ENGINE=DEFAULT;
|
||||
|
|
|
|||
|
|
@ -94,7 +94,7 @@ a1 a2
|
|||
explain extended
|
||||
select * from t1i where a1 in (select b1 from t2i where b1 > '0');
|
||||
id select_type table type possible_keys key key_len ref rows filtered Extra
|
||||
1 PRIMARY t2i index it2i1,it2i3 it2i1 # NULL 5 40.00 Using where; Using index; LooseScan
|
||||
1 PRIMARY t2i index it2i1,it2i3 it2i1 # NULL 5 50.00 Using where; Using index; LooseScan
|
||||
1 PRIMARY t1i ref _it1_idx _it1_idx # _ref_ 1 100.00
|
||||
Warnings:
|
||||
Note 1003 select `test`.`t1i`.`a1` AS `a1`,`test`.`t1i`.`a2` AS `a2` from `test`.`t1i` semi join (`test`.`t2i`) where ((`test`.`t1i`.`a1` = `test`.`t2i`.`b1`) and (`test`.`t2i`.`b1` > '0'))
|
||||
|
|
@ -117,7 +117,7 @@ a1 a2
|
|||
explain extended
|
||||
select * from t1i where (a1, a2) in (select b1, b2 from t2i where b1 > '0');
|
||||
id select_type table type possible_keys key key_len ref rows filtered Extra
|
||||
1 PRIMARY t2i index it2i1,it2i2,it2i3 it2i3 # NULL 5 40.00 Using where; Using index; LooseScan
|
||||
1 PRIMARY t2i index it2i1,it2i2,it2i3 it2i3 # NULL 5 50.00 Using where; Using index; LooseScan
|
||||
1 PRIMARY t1i ref _it1_idx _it1_idx # _ref_ 1 100.00
|
||||
Warnings:
|
||||
Note 1003 select `test`.`t1i`.`a1` AS `a1`,`test`.`t1i`.`a2` AS `a2` from `test`.`t1i` semi join (`test`.`t2i`) where ((`test`.`t1i`.`a1` = `test`.`t2i`.`b1`) and (`test`.`t1i`.`a2` = `test`.`t2i`.`b2`) and (`test`.`t2i`.`b1` > '0'))
|
||||
|
|
@ -319,7 +319,7 @@ where (a1, a2) in (select b1, b2 from t2i where b1 > '0') and
|
|||
(a1, a2) in (select c1, c2 from t3i
|
||||
where (c1, c2) in (select b1, b2 from t2i where b2 > '0'));
|
||||
id select_type table type possible_keys key key_len ref rows filtered Extra
|
||||
1 PRIMARY t2i index it2i1,it2i2,it2i3 # # # 5 40.00 #
|
||||
1 PRIMARY t2i index it2i1,it2i2,it2i3 # # # 5 50.00 #
|
||||
1 PRIMARY t1i ref it1i1,it1i2,it1i3 # # # 1 100.00 #
|
||||
1 PRIMARY t3i ref it3i1,it3i2,it3i3 # # # 1 100.00 #
|
||||
1 PRIMARY t2i ref it2i1,it2i2,it2i3 # # # 2 100.00 #
|
||||
|
|
@ -407,7 +407,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
|
|||
2 MATERIALIZED t2 ALL NULL # # # 5 100.00 #
|
||||
4 MATERIALIZED t3 ALL NULL # # # 4 100.00 #
|
||||
3 MATERIALIZED t3 ALL NULL # # # 4 100.00 #
|
||||
7 UNION t2i index it2i1,it2i2,it2i3 # # # 5 40.00 #
|
||||
7 UNION t2i index it2i1,it2i2,it2i3 # # # 5 50.00 #
|
||||
7 UNION t1i ref it1i1,it1i2,it1i3 # # # 1 100.00 #
|
||||
7 UNION t3i ref it3i1,it3i2,it3i3 # # # 1 100.00 #
|
||||
7 UNION t2i ref it2i1,it2i2,it2i3 # # # 2 100.00 #
|
||||
|
|
|
|||
|
|
@ -804,3 +804,58 @@ drop table language, country, continent;
|
|||
|
||||
set use_stat_tables=@save_use_stat_tables;
|
||||
|
||||
--echo #
|
||||
--echo # Bug mdev-5191: performance degradation due to a suboptimal chosen plan
|
||||
--echo # when optimizer_use_condition_selectivity=3
|
||||
--echo #
|
||||
|
||||
set use_stat_tables = 'preferably';
|
||||
|
||||
set @@RAND_SEED1=810763568, @@RAND_SEED2=600681772;
|
||||
set TIMESTAMP=1394806993;
|
||||
|
||||
create table t1 (a int, b int) engine=myisam;
|
||||
insert t1 values (rand()*1e5, rand()*1e5);
|
||||
insert t1 select rand()*1e5, rand()*1e5 from t1;
|
||||
insert t1 select rand()*1e5, rand()*1e5 from t1;
|
||||
insert t1 select rand()*1e5, rand()*1e5 from t1;
|
||||
insert t1 select rand()*1e5, rand()*1e5 from t1;
|
||||
insert t1 select rand()*1e5, rand()*1e5 from t1;
|
||||
insert t1 select rand()*1e5, rand()*1e5 from t1;
|
||||
insert t1 select rand()*1e5, rand()*1e5 from t1;
|
||||
insert t1 select rand()*1e5, rand()*1e5 from t1;
|
||||
insert t1 select rand()*1e5, rand()*1e5 from t1;
|
||||
insert t1 select rand()*1e5, rand()*1e5 from t1;
|
||||
insert t1 select rand()*1e5, rand()*1e5 from t1;
|
||||
insert t1 select rand()*1e5, rand()*1e5 from t1;
|
||||
insert t1 select rand()*1e5, rand()*1e5 from t1;
|
||||
insert t1 select rand()*1e5, rand()*1e5 from t1;
|
||||
insert t1 select rand()*1e5, rand()*1e5 from t1;
|
||||
insert t1 select rand()*1e5, rand()*1e5 from t1;
|
||||
insert t1 select rand()*1e5, rand()*1e5 from t1;
|
||||
insert t1 select rand()*1e5, rand()*1e5 from t1;
|
||||
|
||||
create table t2 (c int, d int, key(c), key(d)) engine=myisam;
|
||||
insert t2 select floor(rand()*1e5/2)*2, floor(rand()*1e5/3)*3 from t1;
|
||||
|
||||
analyze table t1,t2;
|
||||
|
||||
set optimizer_use_condition_selectivity=1;
|
||||
explain extended
|
||||
select * from t1, t2, t1 as t3
|
||||
where t1.b=t2.c and t2.d=t3.a and t3.b<5 and t1.a < 2000;
|
||||
select * from t1, t2, t1 as t3
|
||||
where t1.b=t2.c and t2.d=t3.a and t3.b<5 and t1.a < 2000;
|
||||
|
||||
set optimizer_use_condition_selectivity=3;
|
||||
explain extended
|
||||
select * from t1, t2, t1 as t3
|
||||
where t1.b=t2.c and t2.d=t3.a and t3.b<5 and t1.a < 2000;
|
||||
select * from t1, t2, t1 as t3
|
||||
where t1.b=t2.c and t2.d=t3.a and t3.b<5 and t1.a < 2000;
|
||||
|
||||
set optimizer_use_condition_selectivity=@save_optimizer_use_condition_selectivity;
|
||||
|
||||
drop table t1,t2;
|
||||
|
||||
set use_stat_tables=@save_use_stat_tables;
|
||||
|
|
|
|||
|
|
@ -5556,9 +5556,23 @@ void set_position(JOIN *join,uint idx,JOIN_TAB *table,KEYUSE *key)
|
|||
/* Estimate of the number matching candidates in the joined table */
|
||||
|
||||
inline
|
||||
ha_rows matching_candidates_in_table(JOIN_TAB *s, bool with_found_constraint)
|
||||
double matching_candidates_in_table(JOIN_TAB *s, bool with_found_constraint,
|
||||
uint use_cond_selectivity)
|
||||
{
|
||||
ha_rows records= s->found_records;
|
||||
ha_rows records;
|
||||
double dbl_records;
|
||||
|
||||
if (use_cond_selectivity > 1)
|
||||
{
|
||||
TABLE *table= s->table;
|
||||
double sel= table->cond_selectivity;
|
||||
double table_records= table->stat_records();
|
||||
dbl_records= table_records * sel;
|
||||
return dbl_records;
|
||||
}
|
||||
|
||||
records = s->found_records;
|
||||
|
||||
/*
|
||||
If there is a filtering condition on the table (i.e. ref analyzer found
|
||||
at least one "table.keyXpartY= exprZ", where exprZ refers only to tables
|
||||
|
|
@ -5578,7 +5592,8 @@ ha_rows matching_candidates_in_table(JOIN_TAB *s, bool with_found_constraint)
|
|||
if (s->table->quick_condition_rows != s->found_records)
|
||||
records= s->table->quick_condition_rows;
|
||||
|
||||
return records;
|
||||
dbl_records= records;
|
||||
return dbl_records;
|
||||
}
|
||||
|
||||
|
||||
|
|
@ -5621,6 +5636,7 @@ best_access_path(JOIN *join,
|
|||
POSITION *loose_scan_pos)
|
||||
{
|
||||
THD *thd= join->thd;
|
||||
uint use_cond_selectivity= thd->variables.optimizer_use_condition_selectivity;
|
||||
KEYUSE *best_key= 0;
|
||||
uint best_max_key_part= 0;
|
||||
my_bool found_constraint= 0;
|
||||
|
|
@ -6052,7 +6068,8 @@ best_access_path(JOIN *join,
|
|||
{
|
||||
double join_sel= 0.1;
|
||||
/* Estimate the cost of the hash join access to the table */
|
||||
ha_rows rnd_records= matching_candidates_in_table(s, found_constraint);
|
||||
double rnd_records= matching_candidates_in_table(s, found_constraint,
|
||||
use_cond_selectivity);
|
||||
|
||||
tmp= s->quick ? s->quick->read_time : s->scan_time();
|
||||
tmp+= (s->records - rnd_records)/(double) TIME_FOR_COMPARE;
|
||||
|
|
@ -6064,7 +6081,7 @@ best_access_path(JOIN *join,
|
|||
best_time= tmp +
|
||||
(record_count*join_sel) / TIME_FOR_COMPARE * rnd_records;
|
||||
best= tmp;
|
||||
records= rows2double(rnd_records);
|
||||
records= rnd_records;
|
||||
best_key= hj_start_key;
|
||||
best_ref_depends_map= 0;
|
||||
best_uses_jbuf= TRUE;
|
||||
|
|
@ -6111,7 +6128,8 @@ best_access_path(JOIN *join,
|
|||
!(s->table->force_index && best_key && !s->quick) && // (4)
|
||||
!(best_key && s->table->pos_in_table_list->jtbm_subselect)) // (5)
|
||||
{ // Check full join
|
||||
ha_rows rnd_records= matching_candidates_in_table(s, found_constraint);
|
||||
double rnd_records= matching_candidates_in_table(s, found_constraint,
|
||||
use_cond_selectivity);
|
||||
|
||||
/*
|
||||
Range optimizer never proposes a RANGE if it isn't better
|
||||
|
|
@ -6184,7 +6202,7 @@ best_access_path(JOIN *join,
|
|||
will ensure that this will be used
|
||||
*/
|
||||
best= tmp;
|
||||
records= rows2double(rnd_records);
|
||||
records= rnd_records;
|
||||
best_key= 0;
|
||||
/* range/index_merge/ALL/index access method are "independent", so: */
|
||||
best_ref_depends_map= 0;
|
||||
|
|
@ -7289,6 +7307,10 @@ double table_cond_selectivity(JOIN *join, uint idx, JOIN_TAB *s,
|
|||
keyuse++;
|
||||
} while (keyuse->table == table && keyuse->key == key);
|
||||
}
|
||||
else
|
||||
{
|
||||
sel= 1;
|
||||
}
|
||||
|
||||
/*
|
||||
If the field f from the table is equal to a field from one the
|
||||
|
|
@ -8313,7 +8335,7 @@ get_best_combination(JOIN *join)
|
|||
Save records_read in JOIN_TAB so that select_describe()/etc don't have
|
||||
to access join->best_positions[].
|
||||
*/
|
||||
j->records_read= (ha_rows)join->best_positions[tablenr].records_read;
|
||||
j->records_read= join->best_positions[tablenr].records_read;
|
||||
j->cond_selectivity= join->best_positions[tablenr].cond_selectivity;
|
||||
join->map2table[j->table->tablenr]= j;
|
||||
|
||||
|
|
|
|||
Loading…
Reference in a new issue