Elasticsearch? ??? ? ???? ?? ??
Elasticsearch? ???? ????? ??? ???? ?? ??? ?? ??? ??? ?????. ? ????? ??? ?? ???? ?? ??? ???? ??? ??? ??? ????? ??? ?????.
?? ??? ?? ??? ?? ???
???? ????? ????? ?? ????? ??? ?????. Elasticsearch?? ??? ?? ???? ???? ?? ????. ??? ???? ??? ?? ?? ???? ???? ?????? ?? ??? ???? ?? ??? ?????.
??? ???
index_email_analyzer ???? ?? ?????? ???? ??? ?????. ??? ?????. ?? ?? ???, name_ngram_filter ? Trim? ?? ??? ???? ???? ???? ????, ??? ??(3~20?)? ngram? ????, ??? ?????.
search_email_analyzer? ???? ?? ?????? ????? ??? ? ?? ??? ?????. ?? ngram ??? ???? ?? ??? ??? ?????.
?? ???
????? ?? index_phone_analyzer? digit_edge_ngram_tokenizer? ???? ??? ??? ngram? ?????. (1~15?) ??? ?????. ?? ?? ????? ?? ???? ???? ? ????. digit_only char ??? ?? ?? ????? ??? ?? ??? ?????.
search_phone_analyzer? ???? ?? ??? ???? ??? ?????? ???? ????? ??? ??? ???? ???.
??? ??
??? ??? ??? ?? ???? ???? ?? ?????.
PUT myindex { "settings": { "analysis": { "analyzer": { "email_url_analyzer": { "type": "custom", "tokenizer": "uax_url_email", "filter": [ "trim" ] }, "index_phone_analyzer": { "type": "custom", "char_filter": [ "digit_only" ], "tokenizer": "digit_edge_ngram_tokenizer", "filter": [ "trim" ] }, "search_phone_analyzer": { "type": "custom", "char_filter": [ "digit_only" ], "tokenizer": "keyword", "filter": [ "trim" ] }, "index_email_analyzer": { "type": "custom", "tokenizer": "standard", "filter": [ "lowercase", "name_ngram_filter", "trim" ] }, "search_email_analyzer": { "type": "custom", "tokenizer": "standard", "filter": [ "lowercase", "trim" ] } }, "char_filter": { "digit_only": { "type": "pattern_replace", "pattern": "\D+", "replacement": "" } }, "tokenizer": { "digit_edge_ngram_tokenizer": { "type": "edgeNGram", "min_gram": "1", "max_gram": "15", "token_chars": [ "digit" ] } }, "filter": { "name_ngram_filter": { "type": "ngram", "min_gram": "1", "max_gram": "20" } } } }, "mappings": { "your_type": { "properties": { "email": { "type": "string", "analyzer": "index_email_analyzer", "search_analyzer": "search_email_analyzer" }, "phone": { "type": "string", "analyzer": "index_phone_analyzer", "search_analyzer": "search_phone_analyzer" } } } } }
?? ?? ??
"@gmail.com"?? ??? ??? ?? "136"?? ???? ????? ?????? ??? ?? ??? ??? ? ????.
POST myindex { "query": { "term": { "email": "@gmail.com" } } } POST myindex { "query": { "term": { "phone": "136" } } }
??? ??? ??? ???? ???? ??? ??? ngram? ?????. ?????.
? ??? Elasticsearch?? ???? ????? ?? ??? ????? ??? ??????? ?? ?????. ??? ??? PHP ??? ????? ?? ?? ??? ?????!

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??? ??? AI ?? ?? ??? ???? ?? ???? ??? ?? ????!

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???? ?? ?? ?? ???

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TOSECIBERYNECTTOEREMOTEMYSQLSERVER, USESSHTUNNENG, CONFIGUREMYSQLFORREMOTEACCESS, SETFIREWALLRULES ? CONSIDERSSLENCRYPTION .First, SpectionANSSHTUNNELWITHSSH-L3307 : LocalHost : 3306user@remote-Server-NandConnectViamySQL-H127.0.1-P3307.second, editmys

MySQL? ? ????? ??? ??? ????? ?? ?? ??? ?? ???????. 1. Windows ??? : MySQL ?? ?????? ? ??? ????? (?? ??? ????? C : \ programfiles \ mysql \ mysqlserverx.x \ bin), "? ???"→ "??"→ "Advanced System ??"→ "?? ??", "??? ??", MySQlb in wors in mysqlb in wors in mysqlb in world in that the the the the the seel worl ?? ????? ?? ???? MySQL? ??????-Version Versification; 2.Macos ? Linux ??? : Bash ??? ?? ~/.bashrc ?? ~/.bash_

MySQL? ?? ???? ?? ??? ??? ? A??, ?? MVCC ? GAP ?? ??? ?? ??? ?? ? ?? ???? ??? ???? ???? ?? ?? ??? ????. ?? ?? ??? ??? ?? (??)? ????? ??? ??? ????? ?? ?? ??? ????? 1. ??? ??? (read committed)? ?? ? ???? ?? ? ??? ?? ? ??? ?? ? ?? ?? ?? ?? ? ? ????. ???, ??? ??? ????? ??? ??;

mysqlworkbench? ??? ?? ??? ?? ??? ?????. ?? ??? ?? ??? ?? ????. 1. Windows ???? %appdata %\ mysql \ workbench \ connections.xml? ????. 2. MacOS ???? ~/Library/ApplicationSupport/MySQL/Workbench/Connections.xml? ????. 3. ????? Linux ???? ~/.mysql/workbench/connections.xml ?? ~/.local/share/data/mysql/wor? ????.

MySQL ??? ?? ??? ?? ?? ??? ?? ??? ??????. 1. ?? ?? ?? ?? ???? Slow_Query_Log ? Long_Query_Time; 2. ???? ??? ?? ??? ???? ? ????? query_time, lock_time, rows_examined? ?? ?? ??? ???? ????. 3. ??? ????? ???? ?? mysqldumpslow ?? pt-query idigest ??? ??????. 4. ??? ???? ??? ??, ??*???*, ??? ?? ?? ?? ?????. ?? ??, user_id? ???? ???? ?? ? ?? ?? ?? ??? ?? ???? ???? ? ????.

MySQLDump? MySQL ??????? ??? ??? ???? ???? ?????. ??????? ???? ?? ?? ? ?? ?? ???? SQL ??? ?????. 1. ?? ??? ????? ??? ?????? ??? ???? ??? SQL ???? ?????. 2. ??? ?????? ?? ??? ??? ???? TB ?? ???? ?? ???? ???? ????. 3. ???? ???-single transaction,-databases,-all-databases,-routines ?; 4. MySQL ??? ???? ?? ?? ?? ?? ?? ? ??? ?? ??? ???? ? ????. 5. ??? ????? ????? ?? ? ?? ??? ???? ?? ????.

MySQL?? NULL ?? ?? ? ? 1. ???? ?? ? ? ? ??? NotNull? ???? ?? ??? NULL? ?????. 2. iSnull ?? ISNOTNULL = ??! =; 3. Ifnull ?? Coalesce ??? ????? ???? ???? ? ??? ? ????. 4. ?? ?? ????? NULL ?? ?? ??? ?? ???? ??? ?? ? ORM ??? ?? ?? ?????? ??????. NULL? ???? ?? ?? ???? ??? ???? ?? ?? ?? ????. ??? ???? ??, ?? ? ???? ?? ? ??? ?? ??? ??? ?? ???????. ??? ??? ???? ??? ?? ?? ??? ????? ?? ? ????.

MySQL? ?? ????? ?????? ?? ??? ?????. 1. MySQL ?? ??, sudosystemctlstopmysql ?? sudosystemctlstopmysqld? ??????. 2. -skip-grant-tables ???? mysql? ???? sudomysqld-skip-grant-tables &; 3. MySQL? ????? ?? SQL ??? ???? FlushPrivileges; Alteruser'Root '@'localHost'IndifiedBy'Your_new? ?? ??? ?? ????? ??????.
