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mariadb/mysql-test/suite/innodb/r/innodb_stats.result
Monty 01c82173dd Removed /2 of InnoDB ref_per_key[] estimates 
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.
2023-02-10 12:59:36 +02:00

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TRUNCATE TABLE test_innodb_stats;
SELECT 'dummy INSERT, the table should be empty';
dummy INSERT, the table should be empty
dummy INSERT, the table should be empty
ANALYZE TABLE test_innodb_stats;
Table Op Msg_type Msg_text
test.test_innodb_stats analyze status OK
SELECT
stat_name,
stat_value,
sample_size,
stat_description
FROM mysql.innodb_index_stats
WHERE
database_name = DATABASE() AND
table_name = 'test_innodb_stats' AND
index_name = 'a_key' AND
stat_name IN ('n_diff_pfx01', 'n_diff_pfx02', 'n_leaf_pages', 'size')
ORDER BY stat_name;
stat_name n_diff_pfx01
stat_value 0
sample_size 1
stat_description a
stat_name n_diff_pfx02
stat_value 0
sample_size 1
stat_description a,DB_ROW_ID
stat_name n_leaf_pages
stat_value 1
sample_size NULL
stat_description Number of leaf pages in the index
stat_name size
stat_value 1
sample_size NULL
stat_description Number of pages in the index
FLUSH TABLE test_innodb_stats;
SELECT * FROM information_schema.statistics
WHERE table_name = 'test_innodb_stats';
TABLE_CATALOG def
TABLE_SCHEMA test
TABLE_NAME test_innodb_stats
NON_UNIQUE 1
INDEX_SCHEMA test
INDEX_NAME a_key
SEQ_IN_INDEX 1
COLUMN_NAME a
COLLATION A
CARDINALITY 0
SUB_PART NULL
PACKED NULL
NULLABLE YES
INDEX_TYPE BTREE
COMMENT
INDEX_COMMENT
IGNORED NO
TRUNCATE TABLE test_innodb_stats;
INSERT INTO test_innodb_stats (a) VALUES (1);
ANALYZE TABLE test_innodb_stats;
Table Op Msg_type Msg_text
test.test_innodb_stats analyze status OK
SELECT
stat_name,
stat_value,
sample_size,
stat_description
FROM mysql.innodb_index_stats
WHERE
database_name = DATABASE() AND
table_name = 'test_innodb_stats' AND
index_name = 'a_key' AND
stat_name IN ('n_diff_pfx01', 'n_diff_pfx02', 'n_leaf_pages', 'size')
ORDER BY stat_name;
stat_name n_diff_pfx01
stat_value 1
sample_size 1
stat_description a
stat_name n_diff_pfx02
stat_value 1
sample_size 1
stat_description a,DB_ROW_ID
stat_name n_leaf_pages
stat_value 1
sample_size NULL
stat_description Number of leaf pages in the index
stat_name size
stat_value 1
sample_size NULL
stat_description Number of pages in the index
FLUSH TABLE test_innodb_stats;
SELECT * FROM information_schema.statistics
WHERE table_name = 'test_innodb_stats';
TABLE_CATALOG def
TABLE_SCHEMA test
TABLE_NAME test_innodb_stats
NON_UNIQUE 1
INDEX_SCHEMA test
INDEX_NAME a_key
SEQ_IN_INDEX 1
COLUMN_NAME a
COLLATION A
CARDINALITY 1
SUB_PART NULL
PACKED NULL
NULLABLE YES
INDEX_TYPE BTREE
COMMENT
INDEX_COMMENT
IGNORED NO
TRUNCATE TABLE test_innodb_stats;
INSERT INTO test_innodb_stats (a) VALUES (1), (1);
ANALYZE TABLE test_innodb_stats;
Table Op Msg_type Msg_text
test.test_innodb_stats analyze status OK
SELECT
stat_name,
stat_value,
sample_size,
stat_description
FROM mysql.innodb_index_stats
WHERE
database_name = DATABASE() AND
table_name = 'test_innodb_stats' AND
index_name = 'a_key' AND
stat_name IN ('n_diff_pfx01', 'n_diff_pfx02', 'n_leaf_pages', 'size')
ORDER BY stat_name;
stat_name n_diff_pfx01
stat_value 1
sample_size 1
stat_description a
stat_name n_diff_pfx02
stat_value 2
sample_size 1
stat_description a,DB_ROW_ID
stat_name n_leaf_pages
stat_value 1
sample_size NULL
stat_description Number of leaf pages in the index
stat_name size
stat_value 1
sample_size NULL
stat_description Number of pages in the index
FLUSH TABLE test_innodb_stats;
SELECT * FROM information_schema.statistics
WHERE table_name = 'test_innodb_stats';
TABLE_CATALOG def
TABLE_SCHEMA test
TABLE_NAME test_innodb_stats
NON_UNIQUE 1
INDEX_SCHEMA test
INDEX_NAME a_key
SEQ_IN_INDEX 1
COLUMN_NAME a
COLLATION A
CARDINALITY 1
SUB_PART NULL
PACKED NULL
NULLABLE YES
INDEX_TYPE BTREE
COMMENT
INDEX_COMMENT
IGNORED NO
TRUNCATE TABLE test_innodb_stats;
INSERT INTO test_innodb_stats (a) VALUES (1), (1), (1);
ANALYZE TABLE test_innodb_stats;
Table Op Msg_type Msg_text
test.test_innodb_stats analyze status OK
SELECT
stat_name,
stat_value,
sample_size,
stat_description
FROM mysql.innodb_index_stats
WHERE
database_name = DATABASE() AND
table_name = 'test_innodb_stats' AND
index_name = 'a_key' AND
stat_name IN ('n_diff_pfx01', 'n_diff_pfx02', 'n_leaf_pages', 'size')
ORDER BY stat_name;
stat_name n_diff_pfx01
stat_value 1
sample_size 1
stat_description a
stat_name n_diff_pfx02
stat_value 3
sample_size 1
stat_description a,DB_ROW_ID
stat_name n_leaf_pages
stat_value 1
sample_size NULL
stat_description Number of leaf pages in the index
stat_name size
stat_value 1
sample_size NULL
stat_description Number of pages in the index
FLUSH TABLE test_innodb_stats;
SELECT * FROM information_schema.statistics
WHERE table_name = 'test_innodb_stats';
TABLE_CATALOG def
TABLE_SCHEMA test
TABLE_NAME test_innodb_stats
NON_UNIQUE 1
INDEX_SCHEMA test
INDEX_NAME a_key
SEQ_IN_INDEX 1
COLUMN_NAME a
COLLATION A
CARDINALITY 1
SUB_PART NULL
PACKED NULL
NULLABLE YES
INDEX_TYPE BTREE
COMMENT
INDEX_COMMENT
IGNORED NO
TRUNCATE TABLE test_innodb_stats;
INSERT INTO test_innodb_stats (a) VALUES (1), (1), (1), (1), (1), (1), (1), (1), (1), (1);
ANALYZE TABLE test_innodb_stats;
Table Op Msg_type Msg_text
test.test_innodb_stats analyze status OK
SELECT
stat_name,
stat_value,
sample_size,
stat_description
FROM mysql.innodb_index_stats
WHERE
database_name = DATABASE() AND
table_name = 'test_innodb_stats' AND
index_name = 'a_key' AND
stat_name IN ('n_diff_pfx01', 'n_diff_pfx02', 'n_leaf_pages', 'size')
ORDER BY stat_name;
stat_name n_diff_pfx01
stat_value 1
sample_size 1
stat_description a
stat_name n_diff_pfx02
stat_value 10
sample_size 1
stat_description a,DB_ROW_ID
stat_name n_leaf_pages
stat_value 1
sample_size NULL
stat_description Number of leaf pages in the index
stat_name size
stat_value 1
sample_size NULL
stat_description Number of pages in the index
FLUSH TABLE test_innodb_stats;
SELECT * FROM information_schema.statistics
WHERE table_name = 'test_innodb_stats';
TABLE_CATALOG def
TABLE_SCHEMA test
TABLE_NAME test_innodb_stats
NON_UNIQUE 1
INDEX_SCHEMA test
INDEX_NAME a_key
SEQ_IN_INDEX 1
COLUMN_NAME a
COLLATION A
CARDINALITY 1
SUB_PART NULL
PACKED NULL
NULLABLE YES
INDEX_TYPE BTREE
COMMENT
INDEX_COMMENT
IGNORED NO
TRUNCATE TABLE test_innodb_stats;
INSERT INTO test_innodb_stats (a) VALUES (1), (2);
ANALYZE TABLE test_innodb_stats;
Table Op Msg_type Msg_text
test.test_innodb_stats analyze status OK
SELECT
stat_name,
stat_value,
sample_size,
stat_description
FROM mysql.innodb_index_stats
WHERE
database_name = DATABASE() AND
table_name = 'test_innodb_stats' AND
index_name = 'a_key' AND
stat_name IN ('n_diff_pfx01', 'n_diff_pfx02', 'n_leaf_pages', 'size')
ORDER BY stat_name;
stat_name n_diff_pfx01
stat_value 2
sample_size 1
stat_description a
stat_name n_diff_pfx02
stat_value 2
sample_size 1
stat_description a,DB_ROW_ID
stat_name n_leaf_pages
stat_value 1
sample_size NULL
stat_description Number of leaf pages in the index
stat_name size
stat_value 1
sample_size NULL
stat_description Number of pages in the index
FLUSH TABLE test_innodb_stats;
SELECT * FROM information_schema.statistics
WHERE table_name = 'test_innodb_stats';
TABLE_CATALOG def
TABLE_SCHEMA test
TABLE_NAME test_innodb_stats
NON_UNIQUE 1
INDEX_SCHEMA test
INDEX_NAME a_key
SEQ_IN_INDEX 1
COLUMN_NAME a
COLLATION A
CARDINALITY 2
SUB_PART NULL
PACKED NULL
NULLABLE YES
INDEX_TYPE BTREE
COMMENT
INDEX_COMMENT
IGNORED NO
TRUNCATE TABLE test_innodb_stats;
INSERT INTO test_innodb_stats (a) VALUES (1), (1), (2);
ANALYZE TABLE test_innodb_stats;
Table Op Msg_type Msg_text
test.test_innodb_stats analyze status OK
SELECT
stat_name,
stat_value,
sample_size,
stat_description
FROM mysql.innodb_index_stats
WHERE
database_name = DATABASE() AND
table_name = 'test_innodb_stats' AND
index_name = 'a_key' AND
stat_name IN ('n_diff_pfx01', 'n_diff_pfx02', 'n_leaf_pages', 'size')
ORDER BY stat_name;
stat_name n_diff_pfx01
stat_value 2
sample_size 1
stat_description a
stat_name n_diff_pfx02
stat_value 3
sample_size 1
stat_description a,DB_ROW_ID
stat_name n_leaf_pages
stat_value 1
sample_size NULL
stat_description Number of leaf pages in the index
stat_name size
stat_value 1
sample_size NULL
stat_description Number of pages in the index
FLUSH TABLE test_innodb_stats;
SELECT * FROM information_schema.statistics
WHERE table_name = 'test_innodb_stats';
TABLE_CATALOG def
TABLE_SCHEMA test
TABLE_NAME test_innodb_stats
NON_UNIQUE 1
INDEX_SCHEMA test
INDEX_NAME a_key
SEQ_IN_INDEX 1
COLUMN_NAME a
COLLATION A
CARDINALITY 3
SUB_PART NULL
PACKED NULL
NULLABLE YES
INDEX_TYPE BTREE
COMMENT
INDEX_COMMENT
IGNORED NO
TRUNCATE TABLE test_innodb_stats;
INSERT INTO test_innodb_stats (a) VALUES (1), (2), (3);
ANALYZE TABLE test_innodb_stats;
Table Op Msg_type Msg_text
test.test_innodb_stats analyze status OK
SELECT
stat_name,
stat_value,
sample_size,
stat_description
FROM mysql.innodb_index_stats
WHERE
database_name = DATABASE() AND
table_name = 'test_innodb_stats' AND
index_name = 'a_key' AND
stat_name IN ('n_diff_pfx01', 'n_diff_pfx02', 'n_leaf_pages', 'size')
ORDER BY stat_name;
stat_name n_diff_pfx01
stat_value 3
sample_size 1
stat_description a
stat_name n_diff_pfx02
stat_value 3
sample_size 1
stat_description a,DB_ROW_ID
stat_name n_leaf_pages
stat_value 1
sample_size NULL
stat_description Number of leaf pages in the index
stat_name size
stat_value 1
sample_size NULL
stat_description Number of pages in the index
FLUSH TABLE test_innodb_stats;
SELECT * FROM information_schema.statistics
WHERE table_name = 'test_innodb_stats';
TABLE_CATALOG def
TABLE_SCHEMA test
TABLE_NAME test_innodb_stats
NON_UNIQUE 1
INDEX_SCHEMA test
INDEX_NAME a_key
SEQ_IN_INDEX 1
COLUMN_NAME a
COLLATION A
CARDINALITY 3
SUB_PART NULL
PACKED NULL
NULLABLE YES
INDEX_TYPE BTREE
COMMENT
INDEX_COMMENT
IGNORED NO
TRUNCATE TABLE test_innodb_stats;
INSERT INTO test_innodb_stats (a) VALUES (1), (1), (2), (3), (3);
ANALYZE TABLE test_innodb_stats;
Table Op Msg_type Msg_text
test.test_innodb_stats analyze status OK
SELECT
stat_name,
stat_value,
sample_size,
stat_description
FROM mysql.innodb_index_stats
WHERE
database_name = DATABASE() AND
table_name = 'test_innodb_stats' AND
index_name = 'a_key' AND
stat_name IN ('n_diff_pfx01', 'n_diff_pfx02', 'n_leaf_pages', 'size')
ORDER BY stat_name;
stat_name n_diff_pfx01
stat_value 3
sample_size 1
stat_description a
stat_name n_diff_pfx02
stat_value 5
sample_size 1
stat_description a,DB_ROW_ID
stat_name n_leaf_pages
stat_value 1
sample_size NULL
stat_description Number of leaf pages in the index
stat_name size
stat_value 1
sample_size NULL
stat_description Number of pages in the index
FLUSH TABLE test_innodb_stats;
SELECT * FROM information_schema.statistics
WHERE table_name = 'test_innodb_stats';
TABLE_CATALOG def
TABLE_SCHEMA test
TABLE_NAME test_innodb_stats
NON_UNIQUE 1
INDEX_SCHEMA test
INDEX_NAME a_key
SEQ_IN_INDEX 1
COLUMN_NAME a
COLLATION A
CARDINALITY 5
SUB_PART NULL
PACKED NULL
NULLABLE YES
INDEX_TYPE BTREE
COMMENT
INDEX_COMMENT
IGNORED NO
TRUNCATE TABLE test_innodb_stats;
INSERT INTO test_innodb_stats (a) VALUES (1), (2), (3), (4), (5), (1), (2), (3), (4), (5);
ANALYZE TABLE test_innodb_stats;
Table Op Msg_type Msg_text
test.test_innodb_stats analyze status OK
SELECT
stat_name,
stat_value,
sample_size,
stat_description
FROM mysql.innodb_index_stats
WHERE
database_name = DATABASE() AND
table_name = 'test_innodb_stats' AND
index_name = 'a_key' AND
stat_name IN ('n_diff_pfx01', 'n_diff_pfx02', 'n_leaf_pages', 'size')
ORDER BY stat_name;
stat_name n_diff_pfx01
stat_value 5
sample_size 1
stat_description a
stat_name n_diff_pfx02
stat_value 10
sample_size 1
stat_description a,DB_ROW_ID
stat_name n_leaf_pages
stat_value 1
sample_size NULL
stat_description Number of leaf pages in the index
stat_name size
stat_value 1
sample_size NULL
stat_description Number of pages in the index
FLUSH TABLE test_innodb_stats;
SELECT * FROM information_schema.statistics
WHERE table_name = 'test_innodb_stats';
TABLE_CATALOG def
TABLE_SCHEMA test
TABLE_NAME test_innodb_stats
NON_UNIQUE 1
INDEX_SCHEMA test
INDEX_NAME a_key
SEQ_IN_INDEX 1
COLUMN_NAME a
COLLATION A
CARDINALITY 5
SUB_PART NULL
PACKED NULL
NULLABLE YES
INDEX_TYPE BTREE
COMMENT
INDEX_COMMENT
IGNORED NO
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