hello,
I have database with 30 tables [some have over 2000k some other over 4000k rec]
when I want to run a sql with a few conditions the answer is dramatically slow
[over 70 seconds!]
sql-s with one condition usually works well..
how is the corrcet way to optimize the database and sql questions?
the answer from sql should be under 1 second...
SHOW VARIABLES gives these informations:
Variable_name Value
back_log 50
basedir /usr/local/mysql/
bdb_cache_size 8388600
bdb_log_buffer_size 32768
bdb_home /dysk/mysql/data/
bdb_max_lock 10000
bdb_logdir
bdb_shared_data OFF
bdb_tmpdir /tmp/
bdb_version Sleepycat Software: Berkeley DB 3.2.9a: (May 14, 2...
binlog_cache_size 32768
bulk_insert_buffer_size 8388608
character_set latin2
character_sets latin1 big5 czech euc_kr gb2312 gbk latin1_de sjis...
concurrent_insert ON
connect_timeout 5
convert_character_set
datadir /dysk/mysql/data/
default_week_format 0
delay_key_write ON
delayed_insert_limit 100
delayed_insert_timeout 300
delayed_queue_size 1000
flush OFF
flush_time 0
ft_boolean_syntax + -><()~*:""&|
ft_min_word_len 4
ft_max_word_len 254
ft_max_word_len_for_sort 20
ft_stopword_file (built-in)
have_bdb YES
have_crypt YES
have_innodb YES
have_isam YES
have_raid YES
have_symlink YES
have_openssl NO
have_query_cache YES
init_file
innodb_additional_mem_pool_size 1048576
innodb_buffer_pool_size 8388608
innodb_data_file_path ibdata1:10M:autoextend
innodb_data_home_dir
innodb_file_io_threads 4
innodb_force_recovery 0
innodb_thread_concurrency 8
innodb_flush_log_at_trx_commit 1
innodb_fast_shutdown ON
innodb_flush_method
innodb_lock_wait_timeout 50
innodb_log_arch_dir ./
innodb_log_archive OFF
innodb_log_buffer_size 1048576
innodb_log_file_size 5242880
innodb_log_files_in_group 2
innodb_log_group_home_dir ./
innodb_mirrored_log_groups 1
innodb_max_dirty_pages_pct 90
interactive_timeout 28800
join_buffer_size 131072
key_buffer_size 8388600
language /usr/local/mysql/share/mysql/polish/
large_files_support ON
license GPL
local_infile ON
locked_in_memory OFF
log OFF
log_update OFF
log_bin OFF
log_slave_updates OFF
log_slow_queries OFF
log_warnings ON
long_query_time 10
low_priority_updates OFF
lower_case_file_system OFF
lower_case_table_names 0
max_allowed_packet 1048576
max_binlog_cache_size 4294967295
max_binlog_size 1073741824
max_connections 100
max_connect_errors 10
max_delayed_threads 20
max_insert_delayed_threads 20
max_heap_table_size 16777216
max_join_size 18446744073709551615
max_relay_log_size 0
max_seeks_for_key 4294967295
max_sort_length 1024
max_user_connections 0
max_tmp_tables 32
max_write_lock_count 4294967295
myisam_max_extra_sort_file_size 268435456
myisam_max_sort_file_size 2147483647
myisam_repair_threads 1
myisam_recover_options OFF
myisam_sort_buffer_size 8388608
net_buffer_length 16384
net_read_timeout 30
net_retry_count 10
net_write_timeout 60
new OFF
open_files_limit 1024
pid_file /dysk/mysql/data/mysqld.pid
log_error
port 3306
protocol_version 10
query_alloc_block_size 8192
query_cache_limit 1048576
query_cache_size 0
query_cache_type ON
query_prealloc_size 8192
range_alloc_block_size 2048
read_buffer_size 131072
read_only OFF
read_rnd_buffer_size 262144
rpl_recovery_rank 0
server_id 0
slave_net_timeout 3600
skip_external_locking ON
skip_networking OFF
skip_show_database OFF
slow_launch_time 2
socket /tmp/mysql.sock
sort_buffer_size 2097144
sql_mode 0
table_cache 64
table_type MYISAM
thread_cache_size 0
thread_stack 196608
tx_isolation REPEATABLE-READ
timezone CEST
tmp_table_size 33554432
tmpdir /tmp/
transaction_alloc_block_size 8192
transaction_prealloc_size 4096
version 4.0.20-max
version_comment Official MySQL-max binary
version_compile_os pc-linux
wait_timeout 28800
a good example of question is:
select distinct logo, klient.klientid, klientnazwa, struktura,
concat(kodpocztowy,' ',miejscowosc) miasto, aparatnumer, concat(ulicaskrot,'
',ulicanazwa,' ',posesja) ulica,concat('woj. ',wojewodztwo,' powiat: ',powiat)
wojpow, klientbranza branza, email, www, wizytowka
from klient, klientulice, klientulica, klientmiejscowosci, klientmiejscowosc,
branzaslowa, branzaslowo, klientbranza, klientslowa, klientslowo
where wojewodztwoid=7 AND klientulica.klientulica like'dwo%' AND klient.klientid
= klientulice.klientid AND klientulice.klientulicaid= klientulica.klientulicaid
AND klientmiejscowosc.klientmiejscowosc like'war%' AND klient.klientid =
klientmiejscowosci.klientid AND klientmiejscowosci.klientmiejscowoscid=
klientmiejscowosc.klientmiejscowoscid AND branzaslowo.branzaslowo like'sam%' AND
klient.klientid = klientbranza.klientid AND
klientbranza.branzaid=branzaslowa.branzaid AND branzaslowa.branzaslowoid=
branzaslowo.branzaslowoid AND (klientslowo.klientslowo LIKE 'sam%') AND
klient.klientid = klientslowa.klientid AND klientslowa.klientslowoid=
klientslowo.klientslowoid
can anyone help me with this?
with best regards
Darek
--
MySQL General Mailing List
For list archives: http://lists.mysql.com/mysql
To unsubscribe: http://lists.mysql.com/[EMAIL PROTECTED]
