8
Tôi có truy vấn đang diễn ra trong trạng thái SENDING DATA trong một khoảng thời gian rất dài. Ai đó có thể vui lòng giúp tôi với điều này: dưới đây là chi tiếtTruy vấn Mysql ở trạng thái 'SENDING DATA' trong thời gian dài khi sử dụng LEFT JOIN
Mysql Query:
select a.msgId,a.senderId,a.destination,a.inTime,a.status as InStatus,b.status as SubStatus,c.deliverTime,substr(c.receipt,82,7) as DlvStatus
from inserted_history a left join submitted_history b on b.msgId = a.msgId left join delivered_history c on a.msgId = c.msgId
where a.inTime between '2010-08-10 00:00:00' and '2010-08-010 23:59:59' and a.systemId='ND_arber'
Tổng số bản ghi trong delivered_history:
Tổng số bản ghi trong inserted_history:
Tổng số bản ghi trong submitted_history:
Giải thích truy vấn trả về:
id , select_type , table , type , possible_keys , key , key_len , ref , rows , Extra
1 , SIMPLE , a , ref , systemId,idx_time , systemId , 14 , const , 735310 , Using where
1 , SIMPLE , b , ref , PRIMARY , PRIMARY , 66 , gwreports2.a.msgId , 2270405 ,
1 , SIMPLE , c , ref , PRIMARY , PRIMARY , 66 , gwreports2.a.msgId , 2238701 ,
CREATE TABLE cho delivered_history
CREATE TABLE `delivered_history` (
`msgId` VARCHAR(64) NOT NULL,
`systemId` VARCHAR(12) NOT NULL,
`deliverTime` TIMESTAMP NOT NULL DEFAULT '0000-00-00 00:00:00',
`smscId` VARCHAR(64) NOT NULL,
`smsc` VARCHAR(20) NOT NULL,
`receipt` BLOB NULL,
`errcode` INT(11) NULL DEFAULT NULL,
PRIMARY KEY (`msgId`, `deliverTime`),
INDEX `systemId` (`systemId`),
INDEX `smsc` (`smsc`),
INDEX `idx_time` (`deliverTime`)
)
ROW_FORMAT=DEFAULT
CREATE TABLE cho inserted_history
CREATE TABLE `inserted_history` (
`msgId` VARCHAR(64) NOT NULL,
`systemId` VARCHAR(12) NOT NULL,
`senderId` VARCHAR(15) NOT NULL,
`destination` VARCHAR(15) NOT NULL,
`inTime` TIMESTAMP NOT NULL DEFAULT '0000-00-00 00:00:00',
`status` VARCHAR(20) NOT NULL,
`msgText` BLOB NULL,
`msgType` VARCHAR(15) NULL DEFAULT NULL,
PRIMARY KEY (`msgId`, `inTime`),
INDEX `systemId` (`systemId`),
INDEX `senderId` (`senderId`),
INDEX `destination` (`destination`),
INDEX `status` (`status`),
INDEX `idx_time` (`inTime`)
)
ROW_FORMAT=DEFAULT
CREATE TABLE cho submitted_history
CREATE TABLE `submitted_history` (
`msgId` VARCHAR(64) NOT NULL,
`systemId` VARCHAR(12) NOT NULL,
`submitTime` TIMESTAMP NOT NULL DEFAULT '0000-00-00 00:00:00',
`status` VARCHAR(20) NOT NULL,
`smscId` VARCHAR(64) NOT NULL,
`smsc` VARCHAR(16) NOT NULL,
`errcode` INT(6) NULL DEFAULT '0',
PRIMARY KEY (`msgId`, `submitTime`),
INDEX `systemId` (`systemId`),
INDEX `smsc` (`smsc`),
INDEX `status` (`status`),
INDEX `idx_time` (`submitTime`)
)
ROW_FORMAT=DEFAULT
TẤT CẢ CÁC BẢNG LÀ NGÀY partioned trên các lĩnh vực timestamp
Danh sách các biến toàn cầu trong Mysql Server
Variable_name , Value
auto_increment_increment , 1
auto_increment_offset , 1
autocommit , ON
automatic_sp_privileges , ON
back_log , 50
basedir , /usr/
big_tables , OFF
binlog_cache_size , 32768
binlog_format , STATEMENT
bulk_insert_buffer_size , 8388608
character_set_client , latin1
character_set_connection , latin1
character_set_database , latin1
character_set_filesystem , binary
character_set_results , latin1
character_set_server , latin1
character_set_system , utf8
character_sets_dir , /usr/share/mysql/charsets/
collation_connection , latin1_swedish_ci
collation_database , latin1_swedish_ci
collation_server , latin1_swedish_ci
completion_type , 0
concurrent_insert , 1
connect_timeout , 10
datadir , /var/lib/mysql/
date_format , %Y-%m-%d
datetime_format , %Y-%m-%d %H:%i:%s
default_week_format , 0
delay_key_write , ON
delayed_insert_limit , 100
delayed_insert_timeout , 300
delayed_queue_size , 1000
div_precision_increment , 4
engine_condition_pushdown , ON
error_count , 0
event_scheduler , OFF
expire_logs_days , 10
flush , OFF
flush_time , 0
foreign_key_checks , ON
ft_boolean_syntax , + -><()~*: &|
ft_max_word_len , 84
ft_min_word_len , 4
ft_query_expansion_limit , 20
ft_stopword_file , (built-in)
general_log , OFF
general_log_file , /var/run/mysqld/mysqld.log
group_concat_max_len , 1024
have_community_features , YES
have_compress , YES
have_crypt , YES
have_csv , YES
have_dynamic_loading , YES
have_geometry , YES
have_innodb , YES
have_ndbcluster , NO
have_openssl , DISABLED
have_partitioning , YES
have_query_cache , YES
have_rtree_keys , YES
have_ssl , DISABLED
have_symlink , YES
hostname , smscdb
identity , 0
ignore_builtin_innodb , OFF
init_connect ,
init_file ,
init_slave ,
innodb_adaptive_hash_index , ON
innodb_additional_mem_pool_size , 1048576
innodb_autoextend_increment , 8
innodb_autoinc_lock_mode , 1
innodb_buffer_pool_size , 8388608
innodb_checksums , ON
innodb_commit_concurrency , 0
innodb_concurrency_tickets , 500
innodb_data_file_path , ibdata1:10M:autoextend
innodb_data_home_dir ,
innodb_doublewrite , ON
innodb_fast_shutdown , 1
innodb_file_io_threads , 4
innodb_file_per_table , OFF
innodb_flush_log_at_trx_commit , 1
innodb_flush_method ,
innodb_force_recovery , 0
innodb_lock_wait_timeout , 50
innodb_locks_unsafe_for_binlog , OFF
innodb_log_buffer_size , 1048576
innodb_log_file_size , 5242880
innodb_log_files_in_group , 2
innodb_log_group_home_dir , ./
innodb_max_dirty_pages_pct , 90
innodb_max_purge_lag , 0
innodb_mirrored_log_groups , 1
innodb_open_files , 300
innodb_rollback_on_timeout , OFF
innodb_stats_on_metadata , ON
innodb_support_xa , ON
innodb_sync_spin_loops , 20
innodb_table_locks , ON
innodb_thread_concurrency , 8
innodb_thread_sleep_delay , 10000
innodb_use_legacy_cardinality_algorithm , ON
insert_id , 0
interactive_timeout , 28800
join_buffer_size , 131072
keep_files_on_create , OFF
key_buffer_size , 1073741824
key_cache_age_threshold , 300
key_cache_block_size , 1024
key_cache_division_limit , 100
language , /usr/share/mysql/english/
large_files_support , ON
large_page_size , 0
large_pages , OFF
last_insert_id , 0
lc_time_names , en_US
license , GPL
local_infile , ON
locked_in_memory , OFF
log , OFF
log_bin , ON
log_bin_trust_function_creators , OFF
log_bin_trust_routine_creators , OFF
log_error ,
log_output , FILE
log_queries_not_using_indexes , OFF
log_slave_updates , OFF
log_slow_queries , OFF
log_warnings , 1
long_query_time , 10.000000
low_priority_updates , OFF
lower_case_file_system , OFF
lower_case_table_names , 0
max_allowed_packet , 536870912
max_binlog_cache_size , 4294963200
max_binlog_size , 104857600
max_connect_errors , 10
max_connections , 151
max_delayed_threads , 20
max_error_count , 64
max_heap_table_size , 16777216
max_insert_delayed_threads , 20
max_join_size , 18446744073709551615
max_length_for_sort_data , 1024
max_prepared_stmt_count , 16382
max_relay_log_size , 0
max_seeks_for_key , 4294967295
max_sort_length , 1024
max_sp_recursion_depth , 0
max_tmp_tables , 32
max_user_connections , 0
max_write_lock_count , 4294967295
min_examined_row_limit , 0
multi_range_count , 256
myisam_data_pointer_size , 6
myisam_max_sort_file_size , 2146435072
myisam_recover_options , BACKUP
myisam_repair_threads , 1
myisam_sort_buffer_size , 8388608
myisam_stats_method , nulls_unequal
myisam_use_mmap , OFF
net_buffer_length , 16384
net_read_timeout , 30
net_retry_count , 10
net_write_timeout , 60
new , OFF
old , OFF
old_alter_table , OFF
old_passwords , OFF
open_files_limit , 20000
optimizer_prune_level , 1
optimizer_search_depth , 62
optimizer_switch , index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on
pid_file , /var/run/mysqld/mysqld.pid
plugin_dir , /usr/lib/mysql/plugin
port , 3306
preload_buffer_size , 32768
profiling , OFF
profiling_history_size , 15
protocol_version , 10
pseudo_thread_id , 0
query_alloc_block_size , 8192
query_cache_limit , 1073741824
query_cache_min_res_unit , 4096
query_cache_size , 536870912
query_cache_type , ON
query_cache_wlock_invalidate , OFF
query_prealloc_size , 8192
rand_seed1 ,
rand_seed2 ,
range_alloc_block_size , 4096
read_buffer_size , 131072
read_only , OFF
read_rnd_buffer_size , 33554432
relay_log ,
relay_log_index ,
relay_log_info_file , relay-log.info
relay_log_purge , ON
relay_log_space_limit , 0
report_host ,
report_password ,
report_port , 3306
report_user ,
rpl_recovery_rank , 0
secure_auth , OFF
secure_file_priv ,
server_id , 3
skip_external_locking , ON
skip_networking , OFF
skip_show_database , OFF
slave_compressed_protocol , OFF
slave_exec_mode , STRICT
slave_load_tmpdir , /tmp
slave_net_timeout , 3600
slave_skip_errors , OFF
slave_transaction_retries , 10
slow_launch_time , 2
slow_query_log , OFF
slow_query_log_file , /var/run/mysqld/mysqld-slow.log
socket , /var/run/mysqld/mysqld.sock
sort_buffer_size , 67108864
sql_auto_is_null , ON
sql_big_selects , ON
sql_big_tables , OFF
sql_buffer_result , OFF
sql_log_bin , ON
sql_log_off , OFF
sql_log_update , ON
sql_low_priority_updates , OFF
sql_max_join_size , 18446744073709551615
sql_mode ,
sql_notes , ON
sql_quote_show_create , ON
sql_safe_updates , OFF
sql_select_limit , 18446744073709551615
sql_slave_skip_counter ,
sql_warnings , OFF
ssl_ca ,
ssl_capath ,
ssl_cert ,
ssl_cipher ,
ssl_key ,
storage_engine , MyISAM
sync_binlog , 0
sync_frm , ON
system_time_zone , IST
table_definition_cache , 256
table_lock_wait_timeout , 50
table_open_cache , 500
table_type , MyISAM
thread_cache_size , 8
thread_handling , one-thread-per-connection
thread_stack , 196608
time_format , %H:%i:%s
time_zone , SYSTEM
timed_mutexes , OFF
timestamp , 1282125419
tmp_table_size , 16777216
tmpdir , /tmp
transaction_alloc_block_size , 8192
transaction_prealloc_size , 4096
tx_isolation , REPEATABLE-READ
unique_checks , ON
updatable_views_with_limit , YES
version , 5.1.37-1ubuntu5-log
version_comment , (Ubuntu)
version_compile_machine , i486
version_compile_os , debian-linux-gnu
wait_timeout , 28800
warning_count , 0