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Removed /2 of InnoDB ref_per_key[] estimates

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The original code was there to favor index search over table scan.
This is not needed anymore as the cost calculations for table scans
and index lookups are now more exact.
This commit is contained in:
Monty
2023-01-26 11:38:31 +02:00
parent 87507bbb4f
commit 01c82173dd
13 changed files with 64 additions and 33 deletions
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8
mysql-test/main/join_outer_innodb.result
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@ -448,9 +448,9 @@ id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t12 eq_ref PRIMARY PRIMARY 4 test.t11.k3 1 Using where
1 SIMPLE l2 eq_ref PRIMARY PRIMARY 4 test.t11.k4 1 Using where
1 SIMPLE t9 ref PRIMARY PRIMARY 1 test.t1.a4 1
1 SIMPLE t13 ref PRIMARY,m3 PRIMARY 4 test.t1.a1 1 Using where
1 SIMPLE t13 ref PRIMARY,m3 m3 8 const,test.t1.a1 3 Using index
1 SIMPLE l4 eq_ref PRIMARY PRIMARY 4 test.t13.m2 1 Using where
1 SIMPLE m2 ref PRIMARY,m3 PRIMARY 4 test.t1.a1 1 Using where
1 SIMPLE m2 ref PRIMARY,m3 m3 8 const,test.t1.a1 3 Using index
1 SIMPLE l3 eq_ref PRIMARY PRIMARY 4 test.m2.m2 1 Using where
1 SIMPLE t14 eq_ref PRIMARY PRIMARY 2 test.t1.a8 1 Using where
1 SIMPLE t15 eq_ref PRIMARY PRIMARY 2 test.t1.a9 1 Using where
@ -471,9 +471,9 @@ id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t12 eq_ref PRIMARY PRIMARY 4 test.t11.k3 1 Using where
1 SIMPLE l2 eq_ref PRIMARY PRIMARY 4 test.t11.k4 1 Using where
1 SIMPLE t9 ref PRIMARY PRIMARY 1 test.t1.a4 1
1 SIMPLE t13 ref PRIMARY,m3 PRIMARY 4 test.t1.a1 1 Using where
1 SIMPLE t13 ref PRIMARY,m3 m3 8 const,test.t1.a1 3 Using index
1 SIMPLE l4 eq_ref PRIMARY PRIMARY 4 test.t13.m2 1 Using where
1 SIMPLE m2 ref PRIMARY,m3 PRIMARY 4 test.t1.a1 1 Using where
1 SIMPLE m2 ref PRIMARY,m3 m3 8 const,test.t1.a1 3 Using index
1 SIMPLE l3 eq_ref PRIMARY PRIMARY 4 test.m2.m2 1 Using where
1 SIMPLE t14 eq_ref PRIMARY PRIMARY 2 test.t1.a8 1 Using where
1 SIMPLE t15 eq_ref PRIMARY PRIMARY 2 test.t1.a9 1 Using where