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ecc7961140
Trivial batch, using the handler statistics already collected for the slow query log. The reason for the changes in test cases was mainly to change to use select TABLE_SCHEMA ... from information_schema.table_statistics instead of 'show table_statistics' to avoid future changes to test results if we add more columns to table_statistics.
86 lines
5.7 KiB
Text
86 lines
5.7 KiB
Text
set @save_userstat=@@global.userstat;
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set global userstat=1;
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create table just_a_test(id int,first_name varchar(10),last_name varchar(10),address varchar(100),phone bigint,email varchar(30), state varchar(30));
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insert into just_a_test values(1,'fa','la','china_a',11111111,'fa_la@163.com','California'),
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(2,'fb','lb','china_b',22222222,'fb_lb@163.com','Arizona'),
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(3,'fc','lc','china_c',33333333,'fc_lc@163.com','California'),
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(4,'fd','ld','china_d',44444444,'fd_ld@163.com','Utah'),
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(5,'fe','le','china_e',55555555,'fe_le@163.com','Arizona');
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alter table just_a_test add primary key (id);
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alter table just_a_test add key IND_just_a_test_first_name_last_name(first_name,last_name);
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alter table just_a_test add key IND_just_a_test_state(state);
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select count(*) from just_a_test where first_name='fc' and last_name='lc';
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count(*)
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1
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select count(*) from just_a_test where state = 'California';
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count(*)
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2
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select * from information_schema.index_statistics where table_schema='test' and table_name='just_a_test';
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TABLE_SCHEMA TABLE_NAME INDEX_NAME ROWS_READ QUERIES
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test just_a_test IND_just_a_test_first_name_last_name 1 1
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test just_a_test IND_just_a_test_state 2 1
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select * from information_schema.table_statistics where table_schema='test' and table_name='just_a_test';
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TABLE_SCHEMA TABLE_NAME ROWS_READ ROWS_CHANGED ROWS_CHANGED_X_INDEXES ROWS_INSERTED ROWS_UPDATED ROWS_DELETED KEY_READ_HITS KEY_READ_MISSES PAGES_ACCESSED PAGES_READ_FROM_DISK
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test just_a_test 18 5 5 5 0 0 2 0 0 0
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alter table just_a_test drop key IND_just_a_test_first_name_last_name;
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select * from information_schema.index_statistics where table_schema='test' and table_name='just_a_test';
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TABLE_SCHEMA TABLE_NAME INDEX_NAME ROWS_READ QUERIES
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test just_a_test IND_just_a_test_state 2 1
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select * from information_schema.table_statistics where table_schema='test' and table_name='just_a_test';
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TABLE_SCHEMA TABLE_NAME ROWS_READ ROWS_CHANGED ROWS_CHANGED_X_INDEXES ROWS_INSERTED ROWS_UPDATED ROWS_DELETED KEY_READ_HITS KEY_READ_MISSES PAGES_ACCESSED PAGES_READ_FROM_DISK
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test just_a_test 23 5 5 5 0 0 2 0 0 0
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alter table just_a_test drop column state;
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select * from information_schema.index_statistics where table_schema='test' and table_name='just_a_test';
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TABLE_SCHEMA TABLE_NAME INDEX_NAME ROWS_READ QUERIES
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select * from just_a_test force index(primary) where id between 1 and 2;
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id first_name last_name address phone email
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1 fa la china_a 11111111 fa_la@163.com
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2 fb lb china_b 22222222 fb_lb@163.com
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select * from just_a_test force index(primary) where id=8;
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id first_name last_name address phone email
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update just_a_test set first_name="unlucky" where id=5;
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select * from information_schema.table_statistics where table_schema='test' and table_name='just_a_test';
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TABLE_SCHEMA TABLE_NAME ROWS_READ ROWS_CHANGED ROWS_CHANGED_X_INDEXES ROWS_INSERTED ROWS_UPDATED ROWS_DELETED KEY_READ_HITS KEY_READ_MISSES PAGES_ACCESSED PAGES_READ_FROM_DISK
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test just_a_test 31 6 6 5 1 0 4 1 0 0
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delete from just_a_test where id=5;
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select * from information_schema.table_statistics where table_schema='test' and table_name='just_a_test';
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TABLE_SCHEMA TABLE_NAME ROWS_READ ROWS_CHANGED ROWS_CHANGED_X_INDEXES ROWS_INSERTED ROWS_UPDATED ROWS_DELETED KEY_READ_HITS KEY_READ_MISSES PAGES_ACCESSED PAGES_READ_FROM_DISK
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test just_a_test 32 7 7 5 1 1 5 1 0 0
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select * from information_schema.index_statistics where table_schema='test' and table_name='just_a_test';
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TABLE_SCHEMA TABLE_NAME INDEX_NAME ROWS_READ QUERIES
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test just_a_test PRIMARY 4 3
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drop table just_a_test;
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select * from information_schema.table_statistics where table_schema='test' and table_name='just_a_test';
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TABLE_SCHEMA TABLE_NAME ROWS_READ ROWS_CHANGED ROWS_CHANGED_X_INDEXES ROWS_INSERTED ROWS_UPDATED ROWS_DELETED KEY_READ_HITS KEY_READ_MISSES PAGES_ACCESSED PAGES_READ_FROM_DISK
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select * from information_schema.index_statistics where table_schema='test' and table_name='just_a_test';
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TABLE_SCHEMA TABLE_NAME INDEX_NAME ROWS_READ QUERIES
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create table just_a_test(id int not null primary key,first_name varchar(10),last_name varchar(10),address varchar(100),phone bigint,email varchar(30), state varchar(30),key(first_name,last_name),key(state));
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insert into just_a_test values(1,'fa','la','china_a',11111111,'fa_la@163.com','California'),
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(2,'fb','lb','china_b',22222222,'fb_lb@163.com','Arizona'),
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(3,'fc','lc','china_c',33333333,'fc_lc@163.com','California'),
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(4,'fd','ld','china_d',44444444,'fd_ld@163.com','Utah'),
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(5,'fe','le','china_e',55555555,'fe_le@163.com','Arizona');
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select count(*) from just_a_test where first_name='fc' and last_name='lc';
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count(*)
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1
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select count(*) from just_a_test where state = 'California';
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count(*)
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2
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select count(*) from just_a_test where id between 2 and 4;
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count(*)
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3
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select * from information_schema.index_statistics where table_schema='test' and table_name='just_a_test';
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TABLE_SCHEMA TABLE_NAME INDEX_NAME ROWS_READ QUERIES
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test just_a_test PRIMARY 4 1
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test just_a_test first_name 1 1
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test just_a_test state 2 1
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select * from information_schema.table_statistics where table_schema='test' and table_name='just_a_test';
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TABLE_SCHEMA TABLE_NAME ROWS_READ ROWS_CHANGED ROWS_CHANGED_X_INDEXES ROWS_INSERTED ROWS_UPDATED ROWS_DELETED KEY_READ_HITS KEY_READ_MISSES PAGES_ACCESSED PAGES_READ_FROM_DISK
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test just_a_test 7 5 15 5 0 0 3 0 0 0
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drop table just_a_test;
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select * from information_schema.index_statistics where table_schema='test' and table_name='just_a_test';
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TABLE_SCHEMA TABLE_NAME INDEX_NAME ROWS_READ QUERIES
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select * from information_schema.table_statistics where table_schema='test' and table_name='just_a_test';
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TABLE_SCHEMA TABLE_NAME ROWS_READ ROWS_CHANGED ROWS_CHANGED_X_INDEXES ROWS_INSERTED ROWS_UPDATED ROWS_DELETED KEY_READ_HITS KEY_READ_MISSES PAGES_ACCESSED PAGES_READ_FROM_DISK
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set global userstat=@save_userstat;
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# End of 11.5 tests
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