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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/suite/innodb/r/innodb_stats.result
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@@ -151,7 +151,7 @@ INDEX_NAME a_key
SEQ_IN_INDEX 1
COLUMN_NAME a
COLLATION A
CARDINALITY 2
CARDINALITY 1
SUB_PART NULL
PACKED NULL
NULLABLE YES
@@ -204,7 +204,7 @@ INDEX_NAME a_key
SEQ_IN_INDEX 1
COLUMN_NAME a
COLLATION A
CARDINALITY 3
CARDINALITY 1
SUB_PART NULL
PACKED NULL
NULLABLE YES
@@ -257,7 +257,7 @@ INDEX_NAME a_key
SEQ_IN_INDEX 1
COLUMN_NAME a
COLLATION A
CARDINALITY 2
CARDINALITY 1
SUB_PART NULL
PACKED NULL
NULLABLE YES
@@ -522,7 +522,7 @@ INDEX_NAME a_key
SEQ_IN_INDEX 1
COLUMN_NAME a
COLLATION A
CARDINALITY 10
CARDINALITY 5
SUB_PART NULL
PACKED NULL
NULLABLE YES