1[client]
 2user=root
 3password=111111
 4
 5[mysqld]
 6########basic settings########
 7server-id = 223
 8port = 3306 
 9user = mysql
10# bind_address = 172.16.6.39
11character_set_server=utf8mb4
12skip_name_resolve = 1
13# max_connections = 800
14max_connections = 128
15max_connect_errors = 1000
16datadir = /data/mysql_data 
17transaction_isolation = READ-COMMITTED
18explicit_defaults_for_timestamp = 1
19join_buffer_size = 134217728
20tmp_table_size = 67108864
21tmpdir = /tmp
22max_allowed_packet = 16777216
23sql_mode = "STRICT_TRANS_TABLES,NO_ENGINE_SUBSTITUTION,NO_ZERO_DATE,NO_ZERO_IN_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER"
24interactive_timeout = 1800
25wait_timeout = 1800
26read_buffer_size = 16777216
27read_rnd_buffer_size = 33554432
28sort_buffer_size = 33554432
29########log settings########
30log_error = error.log
31slow_query_log = 1
32slow_query_log_file = slow.log
33log_queries_not_using_indexes = 1
34log_slow_admin_statements = 1
35log_slow_slave_statements = 1
36log_throttle_queries_not_using_indexes = 10
37expire_logs_days = 90
38long_query_time = 2
39min_examined_row_limit = 100
40########replication settings########
41master_info_repository = TABLE
42relay_log_info_repository = TABLE
43log_bin = bin.log
44sync_binlog = 1
45gtid_mode = on
46enforce_gtid_consistency = 1
47log_slave_updates
48binlog_format = row 
49relay_log = relay.log
50relay_log_recovery = 1
51binlog_gtid_simple_recovery = 1
52slave_skip_errors = ddl_exist_errors
53########innodb settings########
54innodb_page_size = 8192
55innodb_buffer_pool_size = 2G 
56innodb_buffer_pool_instances = 8
57innodb_buffer_pool_load_at_startup = 1
58innodb_buffer_pool_dump_at_shutdown = 1
59innodb_lru_scan_depth = 2000
60innodb_lock_wait_timeout = 5
61innodb_io_capacity = 4000
62innodb_io_capacity_max = 8000
63innodb_flush_method = O_DIRECT
64innodb_file_format = Barracuda
65innodb_file_format_max = Barracuda
66innodb_log_group_home_dir = /data/redolog/ 
67innodb_undo_directory = /data/undolog/     
68innodb_undo_logs = 128
69innodb_undo_tablespaces = 3
70innodb_flush_neighbors = 1
71innodb_log_file_size = 1G          
72innodb_log_buffer_size = 16777216
73innodb_purge_threads = 4
74innodb_large_prefix = 1
75innodb_thread_concurrency = 64
76innodb_print_all_deadlocks = 1
77innodb_strict_mode = 1
78innodb_sort_buffer_size = 67108864 
79########semi sync replication settings########
80plugin_dir=/usr/local/mysql/lib/plugin  
81plugin_load = "rpl_semi_sync_master=semisync_master.so;rpl_semi_sync_slave=semisync_slave.so"
82loose_rpl_semi_sync_master_enabled = 1
83loose_rpl_semi_sync_slave_enabled = 1
84loose_rpl_semi_sync_master_timeout = 5000
85
86[mysqld-5.7]  
87innodb_buffer_pool_dump_pct = 40
88innodb_page_cleaners = 4
89innodb_undo_log_truncate = 1
90innodb_max_undo_log_size = 1G
91innodb_purge_rseg_truncate_frequency = 128
92binlog_gtid_simple_recovery=1
93log_timestamps=system
94transaction_write_set_extraction=MURMUR32
95show_compatibility_56=on
96
97[mysql-5.8]
98sql_mode = "STRICT_TRANS_TABLES,NO_ENGINE_SUBSTITUTION,NO_ZERO_DATE,NO_ZERO_IN_DATE,ERROR_FOR_DIVISION_BY_ZERO

1CREATE TABLE `temp` (
2  `id` int(11) NOT NULL AUTO_INCREMENT,
3  `product_id` int(11) NOT NULL,
4  `flag` int(1) DEFAULT NULL,
5  `size` int(11) DEFAULT NULL,
6  PRIMARY KEY (`id`)
7) ENGINE=InnoDB DEFAULT CHARSET=utf8;

1select sum(
2case flag 
3	when 1 then size
4  when -1 then -1*size
5end)
6from temp
7group by product_id

1create USER 'clibing'@'%' IDENTIFIED BY 'ty88yYMQH0udg1pC';

1CREATE SCHEMA IF NOT EXISTS `clibing` DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci ;

1grant all on *.* to 'clibing'@'%';

1revoke all on *.* from 'clibing'@'%';

1grant all on clibing.* to 'clibing'@'%';

1grant select on clibing.* to 'clibing'@'%'

1update user set password=password('123456') where user='root' and host='%';  

1flush privileges;