锘??xml version="1.0" encoding="utf-8" standalone="yes"?>
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
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цFLUSH 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$湢鐨勭嚎紼嬫暟閲忋? |
Uptime |
鏈嶅姟鍣ㄥ伐浣滀簡澶氬皯縐掋? |
鍏充簬涓婇潰鐨勪竴浜涙敞閲婏細
Opened_tables
澶ぇ錛岄偅涔堜綘鐨?code>table_cache鍙橀噺鍙兘澶皬銆?key_reads
澶ぇ錛岄偅涔堜綘鐨?code>key_cache鍙兘澶皬銆傜紦瀛樺懡涓巼鍙互鐢?code>key_reads/key_read_requests
璁$畻銆?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?.20KILL
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 |
+---------------------------------------------------------------------+