锘??xml version="1.0" encoding="utf-8" standalone="yes"?>无圣光视频在线观看,亚洲男人天堂av网,91综合免费在线http://www.aygfsteel.com/yoursmile/archive/2008/07/14/214721.html濮氱擋楹?/dc:creator>濮氱擋楹?/author>Mon, 14 Jul 2008 06:19:00 GMThttp://www.aygfsteel.com/yoursmile/archive/2008/07/14/214721.htmlhttp://www.aygfsteel.com/yoursmile/comments/214721.htmlhttp://www.aygfsteel.com/yoursmile/archive/2008/07/14/214721.html#Feedback0http://www.aygfsteel.com/yoursmile/comments/commentRss/214721.htmlhttp://www.aygfsteel.com/yoursmile/services/trackbacks/214721.html//杞澆鑷細椋炴壃閮ㄨ惤緙栫▼浠撳簱 : http://www.busfly.cn/csdn/

show databases;
show tables from db_name;

show columns from table_name from db_name;
show index from talbe_name [from db_name];

show status;
show variables;

show [full] processlist;
show table status [from db_name];

show grants for user;

闄や簡status,processlist鍜実rants澶栵紝鍏跺畠鐨勯兘鍙互甯︽湁like wild閫夐」錛屽畠鍙互浣跨敤SQL鐨?%'鍜?_'瀛楃錛?br />
show databases like '%t';

灝嗕細鍒楀嚭鎵鏈夋暟鎹簱鍚嶅瓧鏈熬涓?t'瀛楃鐨勬暟鎹簱


褰撶劧浜嗭紝鍦ㄨ繖浜泂ql涓紝浣犱篃鍙互鐢╠b_name.table_name鏉ヤ唬鏇?table_name from db_name榪欐牱鍐欎細鏇寸畝渚夸簺!

濡傛灉涓涓敤鎴鋒病鏈変竴涓〃鐨勪換浣曟潈闄愶紝琛ㄥ皢涓嶅湪SHOW TABLES鎴?code>mysqlshow db_name涓殑杈撳嚭涓樉紺?br />

澶у鍙兘榪樿寰梔escribe table_name 錛屽畠瀹炵幇鐨勬槸涓巗how columns from db_name.table_name涓鏍風殑鏁堟灉

show status灝嗗彲浠ョ敤mysqlshow --status 鏉ュ緱鍒板悓鏍風殑鏁堟灉

show status灝嗗彲浠ョ敤mysqlshow --status 鏉ュ緱鍒板悓鏍風殑鏁堟灉

鍒?/strong> 鍚箟
Name 琛ㄥ悕
Type 琛ㄧ殑綾誨瀷 (ISAM錛孧yISAM鎴朒EAP)
Row_format 琛屽瓨鍌ㄦ牸寮?(鍥哄畾, 鍔ㄦ? 鎴栧帇緙╋級
Rows 琛屾暟閲?/td>
Avg_row_length 騫沖潎琛岄暱搴?/td>
Data_length 鏁版嵁鏂囦歡鐨勯暱搴?/td>
Max_data_length 鏁版嵁鏂囦歡鐨勬渶澶ч暱搴?/td>
Index_length 绱㈠紩鏂囦歡鐨勯暱搴?/td>
Data_free 宸插垎閰嶄絾鏈嬌鐢ㄤ簡瀛楄妭鏁?/td>
Auto_increment 涓嬩竴涓?autoincrement(鑷姩鍔?錛夊?/td>
Create_time 琛ㄨ鍒涢犵殑鏃墮棿
Update_time 鏁版嵁鏂囦歡鏈鍚庢洿鏂扮殑鏃墮棿
Check_time 鏈鍚庡琛ㄨ繍琛屼竴涓鏌ョ殑鏃墮棿
Create_options 涓?code>CREATE TABLE涓璧蜂嬌鐢ㄧ殑棰濆閫夐」
Comment 褰撳垱閫犺〃鏃訛紝浣跨敤鐨勬敞閲?(鎴栦負浠涔圡ySQL涓嶈兘瀛樺彇琛ㄤ俊鎭殑涓浜涗俊鎭?銆?

SHOW FIELDS鏄?code>SHOW COLUMNS涓涓悓涔夎瘝錛?code>SHOW KEYS鏄?code>SHOW INDEX涓涓悓涔夎瘝銆備綘涔熷彲浠ョ敤mysqlshow db_name tbl_name鎴?code>mysqlshow -k db_name tbl_name 鍒楀嚭涓寮犺〃鐨勫垪鎴栫儲寮曘?/p>

SHOW INDEX浠ラ潪甯哥浉浼間簬ODBC鐨?code>SQLStatistics璋冪敤鐨勬牸寮忚繑鍥炵儲寮曚俊鎭備笅闈㈢殑鍒楄榪斿洖錛?

鍒?/strong> 鍚箟
Table 琛ㄥ悕
Non_unique 0錛屽鏋滅儲寮曚笉鑳藉寘鍚噸澶嶃?
Key_name 绱㈠紩鍚?/td>
Seq_in_index 绱㈠紩涓殑鍒楅『搴忓彿, 浠?1 寮濮嬨?
Column_name 鍒楀悕銆?
Collation 鍒楁庢牱鍦ㄧ儲寮曚腑琚帓搴忋傚湪MySQL涓紝榪欏彲浠ユ湁鍊?code>A錛堝崌搴? 鎴?code>NULL錛堜笉鎺掑簭)銆?
Cardinality 绱㈠紩涓敮涓鍊肩殑鏁伴噺銆傝繖鍙氳繃榪愯isamchk -a鏇存敼.
Sub_part 濡傛灉鍒楀彧鏄儴鍒嗚绱㈠紩錛岀儲寮曞瓧絎︾殑鏁伴噺銆?code>NULL錛屽鏋滄暣涓敭琚儲寮曘?

SHOW STATUS鎻愪緵鏈嶅姟鍣ㄧ殑鐘舵佷俊鎭?璞?code>mysqladmin extended-status涓鏍?銆傝緭鍑虹被浼間簬涓嬮潰鐨勬樉紺猴紝灝界鏍煎紡鍜屾暟瀛楀彲浠ユ湁鐐逛笉鍚岋細

+--------------------------+--------+
| Variable_name | Value |
+--------------------------+--------+
| Aborted_clients | 0 |
| Aborted_connects | 0 |
| Connections | 17 |
| Created_tmp_tables | 0 |
| Delayed_insert_threads | 0 |
| Delayed_writes | 0 |
| Delayed_errors | 0 |
| Flush_commands | 2 |
| Handler_delete | 2 |
| Handler_read_first | 0 |
| Handler_read_key | 1 |
| Handler_read_next | 0 |
| Handler_read_rnd | 35 |
| Handler_update | 0 |
| Handler_write | 2 |
| Key_blocks_used | 0 |
| Key_read_requests | 0 |
| Key_reads | 0 |
| Key_write_requests | 0 |
| Key_writes | 0 |
| Max_used_connections | 1 |
| Not_flushed_key_blocks | 0 |
| Not_flushed_delayed_rows | 0 |
| Open_tables | 1 |
| Open_files | 2 |
| Open_streams | 0 |
| Opened_tables | 11 |
| Questions | 14 |
| Slow_queries | 0 |
| Threads_connected | 1 |
| Threads_running | 1 |
| Uptime | 149111 |
+--------------------------+--------+

涓婇潰鍒楀嚭鐨勭姸鎬佸彉閲忔湁涓嬪垪鍚箟錛?

Aborted_clients 鐢變簬瀹㈡埛娌℃湁姝g‘鍏抽棴榪炴帴宸茬粡姝繪帀錛屽凡緇忔斁寮冪殑榪炴帴鏁伴噺銆?
Aborted_connects 灝濊瘯宸茬粡澶辮觸鐨凪ySQL鏈嶅姟鍣ㄧ殑榪炴帴鐨勬鏁般?
Connections 璇曞浘榪炴帴MySQL鏈嶅姟鍣ㄧ殑嬈℃暟銆?
Created_tmp_tables 褰撴墽琛岃鍙ユ椂錛屽凡緇忚鍒涢犱簡鐨勯殣鍚復鏃惰〃鐨勬暟閲忋?
Delayed_insert_threads 姝e湪浣跨敤鐨勫歡榪熸彃鍏ュ鐞嗗櫒綰跨▼鐨勬暟閲忋?
Delayed_writes 鐢?code>INSERT DELAYED鍐欏叆鐨勮鏁般?
Delayed_errors 鐢?code>INSERT DELAYED鍐欏叆鐨勫彂鐢熸煇浜涢敊璇?鍙兘閲嶅閿?/code>)鐨勮鏁般?
Flush_commands 鎵цFLUSH鍛戒護鐨勬鏁般?
Handler_delete 璇鋒眰浠庝竴寮犺〃涓垹闄よ鐨勬鏁般?
Handler_read_first 璇鋒眰璇誨叆琛ㄤ腑絎竴琛岀殑嬈℃暟銆?
Handler_read_key 璇鋒眰鏁板瓧鍩轟簬閿琛屻?
Handler_read_next 璇鋒眰璇誨叆鍩轟簬涓涓敭鐨勪竴琛岀殑嬈℃暟銆?
Handler_read_rnd 璇鋒眰璇誨叆鍩轟簬涓涓浐瀹氫綅緗殑涓琛岀殑嬈℃暟銆?
Handler_update 璇鋒眰鏇存柊琛ㄤ腑涓琛岀殑嬈℃暟銆?
Handler_write 璇鋒眰鍚戣〃涓彃鍏ヤ竴琛岀殑嬈℃暟銆?
Key_blocks_used 鐢ㄤ簬鍏抽敭瀛楃紦瀛樼殑鍧楃殑鏁伴噺銆?
Key_read_requests 璇鋒眰浠庣紦瀛樿鍏ヤ竴涓敭鍊肩殑嬈℃暟銆?
Key_reads 浠庣鐩樼墿鐞嗚鍏ヤ竴涓敭鍊肩殑嬈℃暟銆?
Key_write_requests 璇鋒眰灝嗕竴涓叧閿瓧鍧楀啓鍏ョ紦瀛樻鏁般?
Key_writes 灝嗕竴涓敭鍊煎潡鐗╃悊鍐欏叆紓佺洏鐨勬鏁般?
Max_used_connections 鍚屾椂浣跨敤鐨勮繛鎺ョ殑鏈澶ф暟鐩?
Not_flushed_key_blocks 鍦ㄩ敭緙撳瓨涓凡緇忔敼鍙樹絾鏄繕娌¤娓呯┖鍒扮鐩樹笂鐨勯敭鍧椼?
Not_flushed_delayed_rows 鍦?code>INSERT DELAY闃熷垪涓瓑寰呭啓鍏ョ殑琛岀殑鏁伴噺銆?
Open_tables 鎵撳紑琛ㄧ殑鏁伴噺銆?
Open_files 鎵撳紑鏂囦歡鐨勬暟閲忋?
Open_streams 鎵撳紑嫻佺殑鏁伴噺(涓昏鐢ㄤ簬鏃ュ織璁拌澆錛?/td>
Opened_tables 宸茬粡鎵撳紑鐨勮〃鐨勬暟閲忋?
Questions 鍙戝線鏈嶅姟鍣ㄧ殑鏌ヨ鐨勬暟閲忋?
Slow_queries 瑕佽姳瓚呰繃long_query_time鏃墮棿鐨勬煡璇㈡暟閲忋?
Threads_connected 褰撳墠鎵撳紑鐨勮繛鎺ョ殑鏁伴噺銆?
Threads_running 涓嶅湪鐫$湢鐨勭嚎紼嬫暟閲忋?
Uptime 鏈嶅姟鍣ㄥ伐浣滀簡澶氬皯縐掋?

鍏充簬涓婇潰鐨勪竴浜涙敞閲婏細

  • 濡傛灉Opened_tables澶ぇ錛岄偅涔堜綘鐨?code>table_cache鍙橀噺鍙兘澶皬銆?
  • 濡傛灉key_reads澶ぇ錛岄偅涔堜綘鐨?code>key_cache鍙兘澶皬銆傜紦瀛樺懡涓巼鍙互鐢?code>key_reads/key_read_requests璁$畻銆?
  • 濡傛灉Handler_read_rnd澶ぇ錛岄偅涔堜綘寰堝彲鑳芥湁澶ч噺鐨勬煡璇㈤渶瑕丮ySQL鎵弿鏁翠釜琛ㄦ垨浣犳湁娌℃紜嬌鐢ㄩ敭鍊肩殑鑱旂粨(join)銆?

SHOW VARIABLES鏄劇ず鍑轟竴浜?strong>MySQL緋葷粺鍙橀噺鐨勫鹼紝浣犱篃鑳戒嬌鐢?code>mysqladmin variables鍛戒護寰楀埌榪欎釜淇℃伅銆傚鏋滅己鐪佸間笉鍚堥傦紝浣犺兘鍦?code>mysqld鍚姩鏃朵嬌鐢ㄥ懡浠よ閫夐」鏉ヨ緗繖浜涘彉閲忕殑澶у鏁般傝緭鍑虹被浼間簬涓嬮潰鐨勬樉紺猴紝灝界鏍煎紡鍜屾暟瀛楀彲浠ユ湁鐐逛笉鍚岋細

+------------------------+--------------------------+
| Variable_name | Value |
+------------------------+--------------------------+
| back_log | 5 |
| connect_timeout | 5 |
| basedir | /my/monty/ |
| datadir | /my/monty/data/ |
| delayed_insert_limit | 100 |
| delayed_insert_timeout | 300 |
| delayed_queue_size | 1000 |
| join_buffer_size | 131072 |
| flush_time | 0 |
| interactive_timeout | 28800 |
| key_buffer_size | 1048540 |
| language | /my/monty/share/english/ |
| log | OFF |
| log_update | OFF |
| long_query_time | 10 |
| low_priority_updates | OFF |
| max_allowed_packet | 1048576 |
| max_connections | 100 |
| max_connect_errors | 10 |
| max_delayed_threads | 20 |
| max_heap_table_size | 16777216 |
| max_join_size | 4294967295 |
| max_sort_length | 1024 |
| max_tmp_tables | 32 |
| net_buffer_length | 16384 |
| port | 3306 |
| protocol-version | 10 |
| record_buffer | 131072 |
| skip_locking | ON |
| socket | /tmp/mysql.sock |
| sort_buffer | 2097116 |
| table_cache | 64 |
| thread_stack | 131072 |
| tmp_table_size | 1048576 |
| tmpdir | /machine/tmp/ |
| version | 3.23.0-alpha-debug |
| wait_timeout | 28800 |
+------------------------+--------------------------+

SHOW PROCESSLIST鏄劇ず鍝釜綰跨▼姝e湪榪愯錛屼綘涔熻兘浣跨敤mysqladmin processlist鍛戒護寰楀埌榪欎釜淇℃伅銆?br /> 濡傛灉浣犳湁process鏉冮檺錛?浣犺兘鐪嬭鎵鏈夌殑綰跨▼錛屽惁鍒欙紝浣犱粎鑳界湅瑙佷綘鑷繁鐨勭嚎紼嬨?br /> 瑙?.20 KILL鍙ユ硶銆傚鏋滀綘涓嶄嬌鐢?code>FULL閫夐」錛岄偅涔堟瘡涓煡璇㈠彧鏈夊ご100瀛楃琚樉紺哄嚭鏉ャ?

SHOW GRANTS FOR user鍒楀嚭瀵逛竴涓敤鎴峰繀欏誨彂鍑轟互閲嶅鎺堟潈鐨勬巿鏉冨懡浠ゃ?

mysql> SHOW GRANTS FOR root@localhost;
+---------------------------------------------------------------------+
| Grants for root@localhost |
+---------------------------------------------------------------------+
| GRANT ALL PRIVILEGES ON *.* TO 'root''localhost' WITH GRANT OPTION |
+---------------------------------------------------------------------+



]]>
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