--source include/have_stat_tables.inc
--source include/have_innodb.inc
--disable_warnings
drop table if exists t1,t2;
--enable_warnings

set @save_use_stat_tables=@@use_stat_tables;

DELETE FROM mysql.table_stats;
DELETE FROM mysql.column_stats;
DELETE FROM mysql.index_stats;  
   
set use_stat_tables='preferably';

CREATE TABLE t1 (
  a int NOT NULL PRIMARY KEY,
  b varchar(32),
  c char(16),
  d date,
  e double,
  f bit(3),
  INDEX idx1 (b, e), 
  INDEX idx2 (c, d),
  INDEX idx3 (d),
  INDEX idx4 (e, b, d)
) ENGINE= MYISAM;

INSERT INTO t1 VALUES
  (0, NULL, NULL, NULL, NULL, NULL),
  (7, 'xxxxxxxxxxxxxxxxxxxxxxxxxx', 'dddddddd', '1990-05-15', 0.1, b'100'),
  (17, 'vvvvvvvvvvvvv', 'aaaa', '1989-03-12', 0.01, b'101'),
  (1, 'vvvvvvvvvvvvv', NULL, '1989-03-12', 0.01, b'100'),
  (12, 'wwwwwwwwwwwwwwwwwwwwwwwwwwww', 'dddddddd', '1999-07-23', 0.112, b'001'),
  (23, 'vvvvvvvvvvvvv', 'dddddddd', '1999-07-23', 0.1, b'100'),
  (8, 'vvvvvvvvvvvvv', 'aaaa', '1999-07-23', 0.1, b'100'),
  (22, 'xxxxxxxxxxxxxxxxxxxxxxxxxx', 'aaaa', '1989-03-12', 0.112, b'001'),
  (31, 'wwwwwwwwwwwwwwwwwwwwwwwwwwww', 'aaaa', '1999-07-23', 0.01, b'001'),
  (10, NULL, 'aaaa', NULL, 0.01, b'010'),
  (5, 'wwwwwwwwwwwwwwwwwwwwwwwwwwww', 'dddddddd', '1999-07-23', 0.1, b'100'),
  (15, 'vvvvvvvvvvvvv', 'ccccccccc', '1990-05-15', 0.1, b'010'),
  (30, NULL, 'bbbbbb', NULL, NULL, b'100'),
  (38, 'zzzzzzzzzzzzzzzzzz', 'bbbbbb', NULL, NULL, NULL),
  (18, 'zzzzzzzzzzzzzzzzzz', 'ccccccccc', '1990-05-15', 0.01, b'010'),
  (9, 'yyy', 'bbbbbb', '1998-08-28', 0.01, NULL),
  (29, 'vvvvvvvvvvvvv', 'dddddddd', '1999-07-23', 0.012, b'010'),
  (3, 'yyy', 'dddddddd',  '1990-05-15', 0.112, b'010'),
  (39, 'zzzzzzzzzzzzzzzzzz', 'bbbbbb', NULL, 0.01, b'100'),
  (14, 'xxxxxxxxxxxxxxxxxxxxxxxxxx', 'ccccccccc', '1990-05-15', 0.1, b'100'),
  (40, 'zzzzzzzzzzzzzzzzzz', 'bbbbbb', '1989-03-12', NULL, NULL),
  (44, NULL, 'aaaa', '1989-03-12', NULL, b'010'),
  (19, 'vvvvvvvvvvvvv', 'ccccccccc', '1990-05-15', 0.012, b'011'),
  (21, 'zzzzzzzzzzzzzzzzzz', 'dddddddd', '1989-03-12', 0.112, b'100'),
  (45, NULL, NULL, '1989-03-12', NULL, b'011'),
  (2, 'wwwwwwwwwwwwwwwwwwwwwwwwwwww', 'ccccccccc', '1990-05-15', 0.1, b'001'),
  (35, 'yyy', 'aaaa', '1990-05-15', 0.05, b'011'),
  (4, 'vvvvvvvvvvvvv', 'dddddddd', '1999-07-23', 0.01, b'101'),
  (47, NULL, 'aaaa', '1990-05-15', 0.05, b'010'),
  (42, NULL, 'ccccccccc', '1989-03-12', 0.01, b'010'),
  (32, NULL, 'bbbbbb', '1990-05-15', 0.01, b'011'),
  (49, 'wwwwwwwwwwwwwwwwwwwwwwwwwwww' , 'aaaa', '1990-05-15', NULL, NULL),
  (43, 'wwwwwwwwwwwwwwwwwwwwwwwwwwww' , 'bbbbbb', '1990-05-15', NULL, b'100'),
  (37, 'yyy', NULL, '1989-03-12', 0.05, b'011'),
  (41, 'xxxxxxxxxxxxxxxxxxxxxxxxxx', 'ccccccccc', '1990-05-15', 0.05, NULL),
  (34, 'yyy', NULL, NULL, NULL, NULL),
  (33, 'zzzzzzzzzzzzzzzzzz', 'dddddddd', '1989-03-12', 0.05, b'011'),
  (24,  'wwwwwwwwwwwwwwwwwwwwwwwwwwww', 'dddddddd', '1990-05-15', 0.01,  b'101'),
  (11, 'yyy', 'ccccccccc', '1999-07-23', 0.1, NULL),
  (25, 'zzzzzzzzzzzzzzzzzz', 'bbb', '1989-03-12', 0.01,  b'101');

ANALYZE TABLE t1;

SELECT * FROM mysql.table_stats;
SELECT * FROM mysql.column_stats;
SELECT * FROM mysql.index_stats;

SELECT COUNT(*) FROM t1;

SELECT * FROM mysql.column_stats
  WHERE db_name='test' AND table_name='t1' AND column_name='a';
SELECT MIN(t1.a), MAX(t1.a), 
       (SELECT COUNT(*) FROM t1 WHERE t1.b IS NULL) /
       (SELECT COUNT(*) FROM t1) AS "NULLS_RATIO(t1.a)",
       (SELECT COUNT(t1.a) FROM t1) /
       (SELECT COUNT(DISTINCT t1.a) FROM t1) AS "AVG_FREQUENCY(t1.a)"
FROM t1;

SELECT * FROM mysql.column_stats
  WHERE db_name='test' AND table_name='t1' AND column_name='b';
SELECT MIN(t1.b), MAX(t1.b), 
       (SELECT COUNT(*) FROM t1 WHERE t1.b IS NULL) /
       (SELECT COUNT(*) FROM t1) AS "NULLS_RATIO(t1.b)",
       (SELECT COUNT(t1.b) FROM t1) /
       (SELECT COUNT(DISTINCT t1.b) FROM t1) AS "AVG_FREQUENCY(t1.b)"
FROM t1;

SELECT * FROM mysql.column_stats 
  WHERE db_name='test' AND table_name='t1' AND column_name='c';
SELECT MIN(t1.c), MAX(t1.c), 
       (SELECT COUNT(*) FROM t1 WHERE t1.c IS NULL) /
       (SELECT COUNT(*) FROM t1) AS "NULLS_RATIO(t1.c)",
       (SELECT COUNT(t1.c) FROM t1) /
       (SELECT COUNT(DISTINCT t1.c) FROM t1) AS "AVG_FREQUENCY(t1.c)"
FROM t1;

SELECT * FROM mysql.column_stats
  WHERE db_name='test' AND table_name='t1' AND column_name='d';
SELECT MIN(t1.d), MAX(t1.d), 
       (SELECT COUNT(*) FROM t1 WHERE t1.d IS NULL) /
       (SELECT COUNT(*) FROM t1) AS "NULLS_RATIO(t1.d)",
       (SELECT COUNT(t1.d) FROM t1) /
       (SELECT COUNT(DISTINCT t1.d) FROM t1) AS "AVG_FREQUENCY(t1.d)"
FROM t1;

SELECT * FROM mysql.column_stats
  WHERE db_name='test' AND table_name='t1' AND column_name='e';
SELECT MIN(t1.e), MAX(t1.e), 
       (SELECT COUNT(*) FROM t1 WHERE t1.e IS NULL) /
       (SELECT COUNT(*) FROM t1) AS "NULLS_RATIO(t1.e)",
       (SELECT COUNT(t1.e) FROM t1) /
       (SELECT COUNT(DISTINCT t1.e) FROM t1) AS "AVG_FREQUENCY(t1.e)"
FROM t1;

SELECT * FROM mysql.index_stats
  WHERE db_name='test' AND table_name='t1' AND index_name='idx1';
SELECT 
  (SELECT COUNT(*) FROM t1 WHERE t1.b IS NOT NULL) /
  (SELECT COUNT(DISTINCT t1.b) FROM t1 WHERE t1.b IS NOT NULL)
  AS 'ARITY 1',
  (SELECT COUNT(*) FROM t1 WHERE t1.b IS NOT NULL AND t1.e IS NOT NULL) /
  (SELECT COUNT(DISTINCT t1.b, t1.e) FROM t1
     WHERE t1.b IS NOT NULL AND t1.e IS NOT NULL) 
  AS 'ARITY 2';

SELECT * FROM mysql.index_stats
  WHERE db_name='test' AND table_name='t1' AND index_name='idx2';
SELECT 
  (SELECT COUNT(*) FROM t1 WHERE t1.c IS NOT NULL) /
  (SELECT COUNT(DISTINCT t1.c) FROM t1 WHERE t1.c IS NOT NULL) 
  AS 'ARITY 1',
  (SELECT COUNT(*) FROM t1 WHERE t1.c IS NOT NULL AND t1.d IS NOT NULL) /
  (SELECT COUNT(DISTINCT t1.c, t1.d) FROM t1
     WHERE t1.c IS NOT NULL AND t1.d IS NOT NULL)
  AS 'ARITY 2';

SELECT * FROM mysql.index_stats
  WHERE db_name='test' AND table_name='t1' AND index_name='idx3';
SELECT 
  (SELECT COUNT(*) FROM t1 WHERE t1.d IS NOT NULL) /
  (SELECT COUNT(DISTINCT t1.d) FROM t1 WHERE t1.d IS NOT NULL)
  AS 'ARITY 1';

SELECT * FROM mysql.index_stats
  WHERE db_name='test' AND table_name='t1' AND index_name='idx4';
SELECT 
  (SELECT COUNT(*) FROM t1 WHERE t1.e IS NOT NULL) /
  (SELECT COUNT(DISTINCT t1.e) FROM t1 WHERE t1.e IS NOT NULL)
  AS 'ARITY 1',
  (SELECT COUNT(*) FROM t1 WHERE t1.e IS NOT NULL AND t1.b IS NOT NULL) /
  (SELECT COUNT(DISTINCT t1.e, t1.b) FROM t1
         WHERE t1.e IS NOT NULL AND t1.b IS NOT NULL)
  AS 'ARITY 2',
  (SELECT COUNT(*) FROM t1
     WHERE t1.e IS NOT NULL AND t1.b IS NOT NULL AND t1.d IS NOT NULL) /  
  (SELECT COUNT(DISTINCT t1.e, t1.b, t1.d) FROM t1
     WHERE t1.e IS NOT NULL AND t1.b IS NOT NULL AND t1.d IS NOT NULL)
  AS 'ARITY 3';


DELETE FROM mysql.column_stats;

set histogram_size=4;
ANALYZE TABLE t1;

SELECT db_name, table_name, column_name,
       min_value, max_value,
       nulls_ratio, avg_frequency,
       hist_size, hist_type, HEX(histogram)
  FROM mysql.column_stats;

DELETE FROM mysql.column_stats;

set histogram_size=8;
set histogram_type='DOUBLE_PREC_HB';
ANALYZE TABLE t1;

SELECT db_name, table_name, column_name,
       min_value, max_value,
       nulls_ratio, avg_frequency,
       hist_size, hist_type, HEX(histogram)
  FROM mysql.column_stats;

DELETE FROM mysql.column_stats;

set histogram_size= 0;
set histogram_type=default;
ANALYZE TABLE t1;


CREATE TABLE t3 (
  a int NOT NULL PRIMARY KEY,
  b varchar(32),
  c char(16),
  INDEX idx (c)
) ENGINE=MYISAM;

INSERT INTO t3 VALUES
  (0, NULL, NULL),
  (7, 'xxxxxxxxxxxxxxxxxxxxxxxxxx', 'dddddddd'),
  (17, 'vvvvvvvvvvvvv', 'aaaa'),
  (1, 'vvvvvvvvvvvvv', NULL),
  (12, 'wwwwwwwwwwwwwwwwwwwwwwwwwwww', 'dddddddd'),
  (23, 'vvvvvvvvvvvvv', 'dddddddd'),
  (8, 'vvvvvvvvvvvvv', 'aaaa'),
  (22, 'xxxxxxxxxxxxxxxxxxxxxxxxxx', 'aaaa'),
  (31, 'wwwwwwwwwwwwwwwwwwwwwwwwwwww', 'aaaa'),
  (10, NULL, 'aaaa'),
  (5, 'wwwwwwwwwwwwwwwwwwwwwwwwwwww', 'dddddddd'),
  (15, 'vvvvvvvvvvvvv', 'ccccccccc'),
  (30, NULL, 'bbbbbb'),
  (38, 'zzzzzzzzzzzzzzzzzz', 'bbbbbb'),
  (18, 'zzzzzzzzzzzzzzzzzz', 'ccccccccc'),
  (9, 'yyy', 'bbbbbb'),
  (29, 'vvvvvvvvvvvvv', 'dddddddd');

ANALYZE TABLE t3;

SELECT * FROM mysql.table_stats;
SELECT * FROM mysql.column_stats;
SELECT * FROM mysql.index_stats;

ALTER TABLE t1 RENAME TO s1;
SELECT * FROM mysql.table_stats;
SELECT * FROM mysql.column_stats;
SELECT * FROM mysql.index_stats;

RENAME TABLE s1 TO t1;
SELECT * FROM mysql.table_stats;
SELECT * FROM mysql.column_stats;
SELECT * FROM mysql.index_stats;

DROP TABLE t3;
SELECT * FROM mysql.table_stats;
SELECT * FROM mysql.column_stats;
SELECT * FROM mysql.index_stats;


CREATE TEMPORARY TABLE t0 (
  a int NOT NULL PRIMARY KEY,
  b varchar(32)
);
INSERT INTO t0 SELECT a,b FROM t1;

ALTER TABLE t1 CHANGE COLUMN b x varchar(32), 
               CHANGE COLUMN e y double;
SHOW CREATE TABLE t1;
SELECT * FROM mysql.column_stats;

ALTER TABLE t1 CHANGE COLUMN x b varchar(32), 
               CHANGE COLUMN y e double;
SHOW CREATE TABLE t1;
SELECT * FROM mysql.column_stats;

ALTER TABLE t1 RENAME TO s1, CHANGE COLUMN b x varchar(32);
SHOW CREATE TABLE s1;
SELECT * FROM mysql.table_stats;
SELECT * FROM mysql.column_stats;
SELECT * FROM mysql.index_stats;
 
ALTER TABLE s1 RENAME TO t1, CHANGE COLUMN x b varchar(32);
SHOW CREATE TABLE t1;
SELECT * FROM mysql.table_stats;
SELECT * FROM mysql.column_stats;
SELECT * FROM mysql.index_stats;

ALTER TABLE t1 CHANGE COLUMN b x varchar(30);
SHOW CREATE TABLE t1;
SELECT * FROM mysql.column_stats;
SELECT * FROM mysql.index_stats;

ALTER TABLE t1 CHANGE COLUMN x b varchar(32);
SHOW CREATE TABLE t1;
SELECT * FROM mysql.column_stats;
SELECT * FROM mysql.index_stats;

ANALYZE TABLE t1 PERSISTENT FOR COLUMNS(b) INDEXES(idx1, idx4);
SELECT * FROM mysql.column_stats;
SELECT * FROM mysql.index_stats;

--replace_result $MYSQLTEST_VARDIR MYSQLTEST_VARDIR
eval
SELECT * INTO OUTFILE '$MYSQLTEST_VARDIR/tmp/save_column_stats'
  FIELDS TERMINATED BY ',' OPTIONALLY ENCLOSED BY '"' LINES TERMINATED BY '\n'
  FROM mysql.column_stats WHERE column_name='b';
--replace_result $MYSQLTEST_VARDIR MYSQLTEST_VARDIR
eval
SELECT * INTO OUTFILE '$MYSQLTEST_VARDIR/tmp/save_index_stats'
  FIELDS TERMINATED BY ',' OPTIONALLY ENCLOSED BY '"' LINES TERMINATED BY '\n'
  FROM mysql.index_stats WHERE index_name IN ('idx1', 'idx4');

ALTER TABLE t1 CHANGE COLUMN b x varchar(30);
SHOW CREATE TABLE t1;
SELECT * FROM mysql.column_stats;
SELECT * FROM mysql.index_stats;

ALTER TABLE t1 CHANGE COLUMN x b varchar(32);
SHOW CREATE TABLE t1;
SELECT * FROM mysql.column_stats;
SELECT * FROM mysql.index_stats;

--replace_result $MYSQLTEST_VARDIR MYSQLTEST_VARDIR
eval
LOAD DATA INFILE '$MYSQLTEST_VARDIR/tmp/save_column_stats'
  INTO TABLE mysql.column_stats
  FIELDS TERMINATED BY ',' OPTIONALLY ENCLOSED BY '"' LINES TERMINATED BY '\n';
--replace_result $MYSQLTEST_VARDIR MYSQLTEST_VARDIR
eval
LOAD DATA INFILE '$MYSQLTEST_VARDIR/tmp/save_index_stats'
  INTO TABLE mysql.index_stats
  FIELDS TERMINATED BY ',' OPTIONALLY ENCLOSED BY '"' LINES TERMINATED BY '\n';
SELECT * FROM mysql.column_stats;
SELECT * FROM mysql.index_stats;
remove_file $MYSQLTEST_VARDIR/tmp/save_column_stats;
remove_file $MYSQLTEST_VARDIR/tmp/save_index_stats;


ALTER TABLE t1 DROP COLUMN b;
SHOW CREATE TABLE t1;
SELECT * FROM mysql.column_stats;
SELECT * FROM mysql.index_stats;

DROP INDEX idx2 ON t1;
SHOW CREATE TABLE t1;
SELECT * FROM mysql.index_stats;

DROP INDEX idx1 ON t1;
DROP INDEX idx4 ON t1;
SHOW CREATE TABLE t1;

ALTER TABLE t1 ADD COLUMN b varchar(32);
CREATE INDEX idx1 ON t1(b, e);
CREATE INDEX idx2 ON t1(c, d);
CREATE INDEX idx4 ON t1(e, b, d);
SHOW CREATE TABLE t1;
SELECT * FROM mysql.column_stats;
SELECT * FROM mysql.index_stats;

ANALYZE TABLE t1 PERSISTENT FOR COLUMNS(b) INDEXES(idx1, idx2, idx4);
SELECT * FROM mysql.column_stats;
SELECT * FROM mysql.index_stats;

UPDATE t1 SET b=(SELECT b FROM t0 WHERE t0.a= t1.a);
ANALYZE TABLE t1 PERSISTENT FOR COLUMNS(b) INDEXES(idx1, idx2, idx4);
SELECT * FROM mysql.column_stats;
SELECT * FROM mysql.index_stats;

ALTER TABLE t1 DROP COLUMN b,
               DROP INDEX idx1, DROP INDEX idx2, DROP INDEX idx4;
SHOW CREATE TABLE t1;
SELECT * FROM mysql.column_stats;
SELECT * FROM mysql.index_stats;

ALTER TABLE t1 ADD COLUMN b varchar(32);
ALTER TABLE t1 
  ADD INDEX idx1 (b, e), ADD INDEX idx2 (c, d), ADD INDEX idx4 (e, b, d);
UPDATE t1 SET b=(SELECT b FROM t0 WHERE t0.a= t1.a);
SHOW CREATE TABLE t1;
SELECT * FROM mysql.column_stats;
SELECT * FROM mysql.index_stats;
ANALYZE TABLE t1 PERSISTENT FOR COLUMNS(b) INDEXES(idx1, idx2, idx4);
SELECT * FROM mysql.column_stats;
SELECT * FROM mysql.index_stats;

DELETE FROM mysql.table_stats;
DELETE FROM mysql.column_stats;
DELETE FROM mysql.index_stats;

ANALYZE TABLE t1 PERSISTENT FOR COLUMNS() INDEXES();
SELECT * FROM mysql.table_stats;
SELECT * FROM mysql.column_stats;
SELECT * FROM mysql.index_stats;

ANALYZE TABLE t1 PERSISTENT FOR COLUMNS(c,e,b) INDEXES(idx2,idx4);
SELECT * FROM mysql.table_stats;
SELECT * FROM mysql.column_stats;
SELECT * FROM mysql.index_stats;

DELETE FROM mysql.index_stats WHERE table_name='t1' AND index_name='primary';
SELECT * FROM mysql.index_stats;
ANALYZE TABLE t1 PERSISTENT FOR COLUMNS() INDEXES(primary);
SELECT * FROM mysql.index_stats;

DELETE FROM mysql.table_stats;
DELETE FROM mysql.column_stats;
DELETE FROM mysql.index_stats;

ANALYZE TABLE t1 PERSISTENT FOR COLUMNS ALL INDEXES ALL;

SELECT * FROM mysql.table_stats;
SELECT * FROM mysql.column_stats;
SELECT * FROM mysql.index_stats;

CREATE TABLE t2 LIKE t1;
ALTER TABLE t2 ENGINE=InnoDB;
INSERT INTO t2 SELECT * FROM t1;

set optimizer_switch='extended_keys=off';

ANALYZE TABLE t2;

SELECT * FROM mysql.table_stats;
SELECT * FROM mysql.column_stats ORDER BY column_name;
SELECT * FROM mysql.index_stats ORDER BY index_name, prefix_arity, table_name;

DELETE FROM mysql.table_stats;
DELETE FROM mysql.column_stats;
DELETE FROM mysql.index_stats;

set optimizer_switch='extended_keys=on';

ANALYZE TABLE t2;

SELECT * FROM mysql.table_stats;
SELECT * FROM mysql.column_stats ORDER BY column_name;
SELECT * FROM mysql.index_stats ORDER BY index_name, prefix_arity, table_name;

ALTER TABLE t2 DROP PRIMARY KEY, DROP INDEX idx1;
SELECT * FROM mysql.index_stats ORDER BY index_name, prefix_arity, table_name;

UPDATE t2 SET b=0 WHERE b IS NULL;
ALTER TABLE t2 ADD PRIMARY KEY (a,b);
SELECT * FROM mysql.index_stats ORDER BY index_name, prefix_arity, table_name;

ANALYZE TABLE t2 PERSISTENT FOR COLUMNS() INDEXES ALL;
SELECT * FROM mysql.index_stats ORDER BY index_name, prefix_arity, table_name;

ALTER TABLE t2 CHANGE COLUMN b b varchar(30);
SELECT * FROM mysql.index_stats ORDER BY index_name, prefix_arity, table_name;

ANALYZE TABLE t2 PERSISTENT FOR COLUMNS ALL INDEXES ALL;
SELECT * FROM mysql.index_stats ORDER BY index_name, prefix_arity, table_name;

ALTER TABLE t2 CHANGE COLUMN b b varchar(32);
SELECT * FROM mysql.index_stats ORDER BY index_name, prefix_arity, table_name;

ANALYZE TABLE t2 PERSISTENT FOR COLUMNS ALL INDEXES ALL;
SELECT * FROM mysql.index_stats ORDER BY index_name, prefix_arity, table_name;

ALTER TABLE t2 DROP COLUMN b;
SELECT * FROM mysql.index_stats ORDER BY index_name, prefix_arity, table_name;

ANALYZE TABLE t2 PERSISTENT FOR COLUMNS() INDEXES ALL;
SELECT * FROM mysql.index_stats ORDER BY index_name, prefix_arity, table_name;

set optimizer_switch='extended_keys=off';

ALTER TABLE t1
  DROP INDEX idx1,
  DROP INDEX idx4;
ALTER TABLE t1
  MODIFY COLUMN b text,
  ADD INDEX idx1 (b(4), e), 
  ADD INDEX idx4 (e, b(4), d);
  
SELECT * FROM mysql.column_stats;
SELECT * FROM mysql.index_stats;

ANALYZE TABLE t1;

SELECT * FROM mysql.column_stats;
SELECT * FROM mysql.index_stats;

DELETE FROM mysql.table_stats;
DELETE FROM mysql.column_stats;
DELETE FROM mysql.index_stats;

ANALYZE TABLE mysql.column_stats PERSISTENT FOR ALL;

ANALYZE TABLE mysql.column_stats;

SELECT * FROM mysql.table_stats;
SELECT * FROM mysql.column_stats;
SELECT * FROM mysql.index_stats;

set use_stat_tables='never';  

ANALYZE TABLE t1 PERSISTENT FOR ALL;

SELECT * FROM mysql.table_stats;
SELECT * FROM mysql.column_stats;
SELECT * FROM mysql.index_stats;


DELETE FROM mysql.table_stats;
DELETE FROM mysql.column_stats;
DELETE FROM mysql.index_stats;

DROP TABLE t1,t2;

set names utf8;

CREATE DATABASE world;

use world;

--source include/world_schema_utf8.inc

--disable_query_log
--disable_result_log
--disable_warnings
--source include/world.inc
--enable_warnings
--enable_result_log
--enable_query_log

set use_stat_tables='preferably';

--disable_result_log
ANALYZE TABLE Country, City, CountryLanguage;
--enable_result_log

SELECT UPPER(db_name), UPPER(table_name), cardinality
  FROM mysql.table_stats;
SELECT UPPER(db_name), UPPER(table_name), 
       column_name, min_value, max_value, nulls_ratio, avg_length, avg_frequency
  FROM mysql.column_stats;
SELECT UPPER(db_name), UPPER(table_name),
       index_name, prefix_arity, avg_frequency
  FROM mysql.index_stats;

use test;

set use_stat_tables='never'; 

CREATE DATABASE world_innodb;

use world_innodb;

--source include/world_schema_utf8.inc

ALTER TABLE Country ENGINE=InnoDB;
ALTER TABLE City ENGINE=InnoDB;
ALTER TABLE CountryLanguage ENGINE=InnoDB;

--disable_query_log
--disable_result_log
--disable_warnings
--source include/world.inc
--enable_warnings
--enable_result_log
--enable_query_log

set use_stat_tables='preferably';

--disable_result_log
ANALYZE TABLE Country, City, CountryLanguage;
--enable_result_log

SELECT UPPER(db_name), UPPER(table_name), cardinality
  FROM mysql.table_stats;
SELECT UPPER(db_name), UPPER(table_name), 
       column_name, min_value, max_value, nulls_ratio, avg_length, avg_frequency
  FROM mysql.column_stats;
SELECT UPPER(db_name), UPPER(table_name),
       index_name, prefix_arity, avg_frequency
  FROM mysql.index_stats;

use world;
set use_stat_tables='preferably';
--disable_result_log
set histogram_size=100;
set histogram_type='SINGLE_PREC_HB';
ANALYZE TABLE CountryLanguage;
set histogram_size=254;
set histogram_type='DOUBLE_PREC_HB';
ANALYZE TABLE City;
FLUSH TABLES;
--enable_result_log

--query_vertical select UPPER(db_name),UPPER(table_name),UPPER(column_name),min_value,max_value,nulls_ratio,avg_length,avg_frequency,hist_size,hist_type,hex(histogram),decode_histogram(hist_type,histogram) from mysql.column_stats where UPPER(db_name)='WORLD' and UPPER(table_name)='COUNTRYLANGUAGE' and UPPER(column_name) = 'PERCENTAGE';
--query_vertical select UPPER(db_name),UPPER(table_name),UPPER(column_name),min_value,max_value,nulls_ratio,avg_length,avg_frequency,hist_size,hist_type,hex(histogram),decode_histogram(hist_type,histogram) from mysql.column_stats where UPPER(db_name)='WORLD' and UPPER(table_name)='CITY' and UPPER(column_name) = 'POPULATION';

set histogram_type=default;
set histogram_size=default;

use test;
DROP DATABASE world;

SELECT UPPER(db_name), UPPER(table_name), cardinality
  FROM mysql.table_stats;
SELECT UPPER(db_name), UPPER(table_name), 
       column_name, min_value, max_value, nulls_ratio, avg_length, avg_frequency
  FROM mysql.column_stats;
SELECT UPPER(db_name), UPPER(table_name),
       index_name, prefix_arity, avg_frequency
  FROM mysql.index_stats;

DROP DATABASE world_innodb;
SELECT UPPER(db_name), UPPER(table_name), cardinality
  FROM mysql.table_stats;
SELECT UPPER(db_name), UPPER(table_name), 
       column_name, min_value, max_value, nulls_ratio, avg_length, avg_frequency
  FROM mysql.column_stats;
SELECT UPPER(db_name), UPPER(table_name),
       index_name, prefix_arity, avg_frequency
  FROM mysql.index_stats;

DELETE FROM mysql.table_stats;
DELETE FROM mysql.column_stats;
DELETE FROM mysql.index_stats;
  
--echo #
--echo # Bug mdev-4357: empty string as a value of the HIST_SIZE column 
--echo #                from mysql.column_stats
--echo #

create table t1 (a int);
insert into t1 values (1),(2),(3);

set histogram_size=10;

analyze table t1  persistent for all;

select db_name, table_name, column_name,
       min_value, max_value,
       nulls_ratio, avg_frequency,
       hist_size, hist_type, HEX(histogram)
  FROM mysql.column_stats;

set histogram_size=default;

drop table t1;

--echo #
--echo # Bug mdev-4359: wrong setting of the HIST_SIZE column 
--echo # (see also mdev-4357)         from mysql.column_stats
--echo #

create table t1 ( a int);
insert into t1 values (1),(2),(3),(4),(5);

set histogram_size=10;
set histogram_type='double_prec_hb';

show variables like 'histogram%';

analyze table t1 persistent for all;

select db_name, table_name, column_name,
       min_value, max_value,
       nulls_ratio, avg_frequency,
       hist_size, hist_type, HEX(histogram)
  FROM mysql.column_stats;

set histogram_size=default;
set histogram_type=default;

drop table t1;

--echo #
--echo # Bug mdev-4369: histogram for a column with many distinct values 
--echo #


CREATE TABLE t1 (id int);
CREATE TABLE t2 (id int);

INSERT INTO t1 (id) VALUES (1), (1), (1),(1);
INSERT INTO t1 (id) SELECT id FROM t1;
INSERT INTO t1 SELECT id+1 FROM t1;
INSERT INTO t1 SELECT id+2 FROM t1;
INSERT INTO t1 SELECT id+4 FROM t1;
INSERT INTO t1 SELECT id+8 FROM t1;
INSERT INTO t1 SELECT id+16 FROM t1;
INSERT INTO t1 SELECT id+32 FROM t1;
INSERT INTO t1 SELECT id+64 FROM t1;
INSERT INTO t1 SELECT id+128 FROM t1;
INSERT INTO t1 SELECT id+256 FROM t1;
INSERT INTO t1 SELECT id+512 FROM t1;

INSERT INTO t2 SELECT id FROM t1 ORDER BY id*rand();

SELECT COUNT(*) FROM t2;
SELECT COUNT(DISTINCT id) FROM t2;

set @@tmp_table_size=1024*16;
set @@max_heap_table_size=1024*16;

set histogram_size=63;

analyze table t2 persistent for all;

select db_name, table_name, column_name,
       min_value, max_value,
       nulls_ratio, avg_frequency,
       hist_size, hist_type, HEX(histogram)
  FROM mysql.column_stats;

set histogram_size=default;

drop table t1, t2;

set use_stat_tables=@save_use_stat_tables;