PostgreSQLã¨MySQLã使ããªãã©ã£ã¡ï¼Â ãã¼ã¿ãã¼ã¹å°é家ã8ã¤ã®è¦ç¹ã§å¾¹åºæ¯è¼ï¼ ãªã¼ãã³ã½ã¼ã¹ã®ãã¼ã¿ãã¼ã¹ã¨ãã¦ããæ¯è¼ãããPostgreSQLã¨MySQLãã©ããªé·æã»çæãããã®ã§ãããï¼Â ããããã®å°é家ã«ãã対è«ã§æããã«ãã¾ãã ã¨ã³ã¸ãã¢ã¨ãã¦åãã¦ããã¨å¿ ãç´é¢ããæ©ã¿ãããã¯ããã©ã®ãªã¬ã¼ã·ã§ãã«ã»ãã¼ã¿ãã¼ã¹ï¼ä»¥ä¸ãRDBï¼ãé¸ã¶ã®ãæåãªã®ãï¼ãã§ãã RDBãã¨ã«é·æã¨çæã¯ç°ãªã£ã¦ãã¾ãããã®ããèªç¤¾ãµã¼ãã¹ã«ãããããªãRDBãé¸ãã§ãã¾ãã¨ããããããã«ããã¯ã¨ãªãéçºã»éç¨ã«ãã©ãã«ãçããã±ã¼ã¹ã¯å°ãªãããã¾ããã ãªãã§ãããæ¯è¼æ¤è¨ãããã®ããPostgreSQLã¨MySQLãã¨ãã«ãªã¼ãã³ã½ã¼ã¹RDBã®ããã¡ã¯ãã¹ã¿ã³ãã¼ãã§ãããé«ãæ§è½ã¨æ°å¤ãã®æ©è½ãæã£ã¦ãã¾ãã ã§ã¯ã両è ã¯å ·ä½çã«ã©ã®ãããªé·æã»çæãããã®ã§ãããããã
ãè«çåé¤ãäºã ã«ã¤ã㦠- mike-neckã®ããã°ããèªãã§ã ãã¼ã¿ãã¼ã¹è¨è¨ã«ããã¦ãããã¼ãã«ã®æ¸ãæãããããªãimmutableãªãã¹ã¿ã¨æ´æ°ãã°ã«ãã£ã¦å ¨ã¦ãæ§æãããã¨ãããã®è¨äºã®ä¸»å¼µã¯ã¢ããªã³ã°è«ã¨ãã¦å ¨ãæ£ããã ã ããæ®å¿µãªãã¨ã«ããã£ã¹ã¯ãã¡ã¢ãªãè²´éãªè³æºã ã£ãæ代ã®æè¡ã§ããRDBã¯ããã®ãããªã¢ããªã³ã°ã«åºã¥ãã¦è¨è¨ããããã¼ã¿ãã¼ã¹ã«ã¯å¿ ãããé©ãã¦ããªãã 第ä¸ã®åé¡ã¯ãRDBã«å¯¾ãã¦ãªãããæ§ã ãªãæ´æ°ãï¼ãã©ã³ã¶ã¯ã·ã§ã³ï¼ã¯ä¸å®å½¢ï¼ã©ã®ãã¼ãã«ãã©ã®ããã«ä¿®æ£ãããã¯ã¢ããªã±ã¼ã·ã§ã³ä¾åï¼ã ã¨ããç¹ãä¸å®å½¢ãªãæ´æ°ããæç³»åã«ãã£ã¦RDBã«è¨é²ãã¦ããã®ã¯ãè¨è¨ã¨ä¸¦èµ°æ§ã®ç¹ã«ããã¦å°é£ãããã¯ç ©éãªã³ã¼ãã£ã³ã°ãå¿ è¦ã«ãªãï¼ã¨ãããããã®ãããªãã¤ãã³ããã«ãããå¤åãã¯REDOãã°ã«æ¸ãããã®æ´æ°ããããç¶æ ãããã¼ãã«ã«åæ ãã¦ããã¨ããã®ã
ãµã¼ãã¹çµäºã®ãç¥ãã ãã¤ãYahoo! JAPANã®ãµã¼ãã¹ããå©ç¨ããã ãèª ã«ãããã¨ããããã¾ãã ã客æ§ãã¢ã¯ã»ã¹ããããµã¼ãã¹ã¯æ¬æ¥ã¾ã§ã«ãµã¼ãã¹ãçµäºãããã¾ããã ä»å¾ã¨ãYahoo! JAPANã®ãµã¼ãã¹ããæ顧ãã ããã¾ãããããããããé¡ããããã¾ãã
å æ¥ã®ã¨ã³ããªã§å°ã話ããã®ã§ãããåãå¨å¦ãã¦ããã¨ãã®æ±å¤§ã«ã¯ãã¼ã¿ãã¼ã¹ãå¦ã¶ããã®ã³ã¼ã¹ã¨ãããã®ãããã¾ããã§ããï¼DBé¢ä¿ã®ææ¥ã¯å¹´ã«ï¼ã¤ãï¼ã¤ããç¨åº¦ãç¾å¨ã¯ã©ããªãã ããï¼ï¼ããããªã¨ãã«å½¹ã ã£ãã®ã¯ããã¯ãæç§æ¸ãèªã¿ããããã®ããé ã«ç´¹ä»ãã¦ããã¾ããï¼ã¨ã¯ãã£ã¦ããã¹ã¦è±èªã®æ¬ã§ãããããããï¼ ä¸çªã®ãè¦ãã¯ãRaghu Ramakrishnanå ç (ç¾å¨ã¯ãYahoo! Research) ã®ãDatabase Management Systems (3rd Edition)ããåå¦è ããç 究è ã¾ã§å¹ åºã使ãã¾ãããã¼ã¿ãã¼ã¹ç®¡çã·ã¹ãã ï¼DBMSï¼ã®åºæ¬æ¦å¿µãããåãåããæé©åããã©ã³ã¶ã¯ã·ã§ã³ç®¡çãªã©ãããããå®è£ ã»è©ä¾¡ããããã«å¿ è¦ãªããDBã®ä¸çã§ã®å¸¸èãããä¸å¯§ãªèªãå£ã§ãµãã ãã«çãè¾¼ã¾ãã¦ãã¾ãããã®1åãèªãã§ããã°ãDBã®ä¸çã§è°è«ããããã®
2. èªå·±ç´¹ä» ï¬ ä¹ ä¿ç°å±è¡ (@nobu_k) ï¬ ä½ã£ã¦ãããã® ï¬ Sedue ã Bazil ï¬ ( ã½ãã ) ãªã¢ã«ã¿ã¤ã æ¤ç´¢é¨åã®æ¹è¯ ï¬ èå³ã®ããåé ï¬ åæ£ã·ã¹ãã : ã³ã³ã»ã³ãµã¹ãã¬ããªã±ã¼ã·ã§ã³ ï¬ DB: ã¤ã³ããã¯ã¹ãã¹ãã¬ã¼ã¸ããã©ã³ã¶ã¯ã·ã§ã³ ï¬ Red Bull ä¸æ¯è§£æ¶ã 2013 å¹´ã¯ã¾ã 1 ãã« 2 4. ãã©ã³ã¶ã¯ã·ã§ã³å¦çã¨ã¯ ï¬ ããããããã£ã±ã«è¨ãã¨ãã¼ã¿ã®æ´åæ§ãä¿ã¤ããã®æè¡ ï¬ éè¡ã ATM ã§ã®ãéã®ããã¨ã ï¬ ä¸æ´åã§å°ãä¾ : ãéãæ¯ãè¾¼ãã ãã©æ®é«ãå¢ããªãã£ã ï¬ EC ãµã¤ãã§ã®è³¼è²·å±¥æ´ã»å¨åº«ç®¡ç ï¬ ä¸æ´åã§å°ãä¾ : ãéæã£ããã©ååãå±ããªãã£ã ï¬ é常 DBMS ã«å®è£ ããããã©ã³ã¶ã¯ã·ã§ã³å¦çæ©è½ãå©ç¨ããã ï¬ ããããä¸å±¤ã¢ã¼ããã¯ãã£ã¿ãããªã㤠4 5. ãã©ã³ã¶ã¯ã·ã§ã³å¦ç㨠DBMS
This document describes Sakila sample database installation, structure, usage, and history. For legal information, see the Legal Notices. For help with using MySQL, please visit the MySQL Forums, where you can discuss your issues with other MySQL users. Document generated on: 2024-11-05 (revision: 80192)
Oracleã®æ§ã ãªè©±é¡ãæ±ãJPOUG> SET EVENTS 20151017ã¨ããã¤ãã³ãã«åºã¦ããã®ã§ãã®ã¾ã¨ãã ä»åã¯ãã¤ããã©ã¼ãã³ã¹ãå®ç¾ããè¨è¨æ¹æ³ã¨SQLãã¥ã¼ãã³ã°å®è·µè¬åº§ã¨ããã»ãã·ã§ã³ã®ã¬ãã¼ãã§ãã SQLãã¥ã¼ãã³ã°å ¥éã®æ¹å¿ è¦ã§ãï¼ ä»ã®ã»ãã·ã§ã³ã¯ä»¥ä¸ããã©ããã
åããã¼ã¿ã¹ãã¢å ã«ç°ãªããã¼ã¿ã¢ãã«ãé©åãããããã®ã±ã¼ã¹ã¹ã¿ãã£ã æè¿ã«ãªã£ã¦ãâå¤è¨èªãã¼ã·ã¹ãã³ã¹âã¨ããèããæ°ãã«ç»å ´ããããã¥ã©ã¼ã«ãªã£ã¦ãã¾ãããåèã¨ãã¦ã Martin Fowlerãèªèº«ã®ããã°ã«æ稿ããç´ æ´ãããè¨äº ãã覧ãã ãããFlowerã®åºæ¬çãªèãã解éããã°ã大è¦æ¨¡ãªã½ããã¦ã§ã¢ã¢ã¼ããã¯ãã£ã«ããããã¼ã·ã¹ãã³ã¹å±¤ã®ç°ãªãé¨åã«å¯¾ãã¦ãé©åãªãã¼ã¿ã¢ãã«ãè²ã ã¨ä½¿ããã¨ã¯æçã§ãããã¨ãããã¨ã«ãªãã¾ãããã®ãã¨ãããä¾ãã°ãæ°¸ç¶çã«æ§é åããããªã¬ã¼ã·ã§ãã«ãã¼ã¿ãã¼ã¹ã«ã¯è¡¨å½¢å¼ã®ãã¼ã¿ãéæ§é åãã¼ã¿åãã®ããã¥ã¡ã³ãã¹ãã¢ã«ã¯ãªãã¸ã§ã¯ãã©ã¤ã¯ãªãã¼ã¿ãããã·ã¥ãã¼ãã«åãã®ãã¼/ããªã¥ã¼ã¹ãã¢ã«ã¯é«åº¦ã«é¢é£ä»ããããåç §ãã¼ã¿åãã®ã°ã©ããã¼ã¿ãã¼ã¹ã使ããã¨ãã§ããã¨ãããã¨ã§ããå¾æ¥ã®èãæ¹ã§ã¯ãããã¯åä¸ã®ããã¸ã§ã¯ãå ã§è¤æ°ã®ãã¼
ãSQLããã©ã¼ãã³ã¹è©³è§£ãã¨ããæ¬ã翻訳ãã¾ãã 2015-04-07 é¡ã®éãããSQLããã©ã¼ãã³ã¹è©³è§£ã(åæã¿ã¤ãã«SQL Performance Explained)ã¨ããæ¬ã翻訳ãã¾ãããPDFçã¨å°å·çãä¸è¨ãµã¤ãããè³¼å ¥ã§ãã¾ãã (è¿½è¨ 2017å¹´9æãããæ¸è°·ã®BOOK LAB TOKYOããã§ãå°å·çã販売ãã¦ããã ãã¦ãã¾ãã輸éã³ã¹ãã®é¢ä¿ã§ããµã¤ãããè³¼å ¥ããããè¥å¹²å®ããªã£ã¦ãã¾ã) ãªã¬ã¼ã·ã§ãã«ãã¼ã¿ãã¼ã¹ã«ããã¦ãSQLã¨ã¤ã³ããã¯ã¹ãã©ã®ããã«é¢é£ããã©ã®ããã«ããã°SQLã®ããã©ã¼ãã³ã¹ãè¯ãã§ããã®ãã解説ããæ¬ã§ããç¹å®ã®ãã¼ã¿ãã¼ã¹è£½åã«ç¦ç¹ãå½ã¦ãæ¬ã¯å¤æ°ããã¾ããããã®æ¬ã§ã¯Oracle DatabaseãPostgreSQLãMySQLãSQL Serverã®4ã¤ã®ã¡ã¸ã£ã¼ãªãªã¬ã¼ã·ã§ãã«ãã¼ã¿ãã¼ã¹è£½åãåæã«æ±ã£ã¦ãã¦ãããããã®ã¯
åæ¸ã ã¤ã³ããã¯ã¹ã® å é¨æ§é ã¤ã³ããã¯ã¹ ãªã¼ããã¼ã æ¤ç´¢ ããªã¼(Bããªã¼) é ãã¤ã³ããã¯ã¹ ãã¼ãI where å¥ ç価 æ¼ç®å ãã©ã¤ããªãã¼ è¤åã¤ã³ããã¯ã¹ é ãã¤ã³ããã¯ã¹ ãã¼ãII é¢æ° - where 大æåã»å°æåãåºå¥ãã æ¤ç´¢ ã¦ã¼ã¶å®ç¾© é¢æ° ã¤ã³ããã¯ã¹ã®ä½ãéã ãã©ã¡ã¼ã¿å ã¯ã¨ãª ç¯å² æ¤ç´¢ 大ãªããå°ãªãã BETWEEN LIKEãã£ã«ã¿ã« 対ããã¤ã³ããã¯ã¹ ã¤ã³ããã¯ã¹ã®çµå é¨åã¤ã³ããã¯ã¹ Oracleã«ãããNULL NULLã«å¯¾ãã ã¤ã³ããã¯ã¹ NOT NULL å¶ç´ é¨åã¤ã³ããã¯ã¹ã ã¨ãã¥ã¬ã¼ããã å¦çãã«ããæ¡ä»¶ æ¥ä»å æ°å¤æåå åã®é£çµ ã¹ãã¼ããªãã¸ã㯠æ°å¼ ããã©ã¼ãã³ã¹ã¨ ã¹ã±ã¼ã©ããªã㣠ãã¼ã¿ é ã·ã¹ãã è² è· ã¬ã¹ãã³ã¹ ã¿ã¤ã ã¨ã¹ã«ã¼ããã çµå å¦ç å ¥ãå ã«ã¼ã ããã·ã¥ çµå ã½ã¼ãã
PHPã¨é£æºããããã¼ã¿ãã¼ã¹ç®¡çã·ã¹ãã PostgreSQLã¨ã¯ãªãããï¼ ã¨ããããã¨ã調ã¹ã¦ã¿ã¦ããPostgreSQLã¨ã¯ããªã¼ãã³ã½ã¼ã¹ã®ããªã¼ã½ããã¦ã¨ã¢ãã®ãORDBMSï¼ãªãã¸ã§ã¯ãé¢ä¿ãã¼ã¿ãã¼ã¹ç®¡çã·ã¹ãã ãã¨ãããã¨ã§çµãã£ã¦ãã¾ãã ãã¯ããä»ã®ã½ããã¦ã¨ã¢ã¨æ¯è¼ãã¦åãã¦ãã½ããã¦ã¨ã¢ããããã®åæ§ãåããã¨æãã ããã§PHPã¨é£æºãããã®ã ãããPostgreSQLãMySQLã¨æ¯è¼ããã®ãæã£åãæ©ããã¨ã«æ°ãã¤ããã MySQLã¨PostgreSQLã®éãããªã¹ãã¢ãããã¦ã¿ãã MySQLã¨PostgreSQLã®è²©å£²ä¾¡æ ¼ MySQLï¼ãªã¼ãã³ã½ã¼ã¹ã§ããªã¼ï¼ç¡åï¼ã¨åç¨ï¼æåï¼ã®ãã¥ã¢ã«ã©ã¤ã»ã³ã¹ PostgreSQLï¼ãªã¼ãã³ã½ã¼ã¹ã§å®å ¨ãªããªã¼ï¼ç¡åï¼ã½ããã¦ã¨ã¢ MySQLã¨PostgreSQLã®ã¢ã¼ããã¯ã MySQLï¼ãã«ãã¹ã¬ãã Postg
This webpage was generated by the domain owner using Sedo Domain Parking. Disclaimer: Sedo maintains no relationship with third party advertisers. Reference to any specific service or trade mark is not controlled by Sedo nor does it constitute or imply its association, endorsement or recommendation.
ã¯ã©ã¤ã¢ã³ãããã¼ã¸ã£ ã¯ã©ã¤ã¢ã³ãããã¼ã¸ã£ã¯ãã¯ã©ã¤ã¢ã³ãã¨ã®éä¿¡ãæ±ãã¾ããã¯ã©ã¤ã¢ã³ãã¨ã¯ãï¼Webï¼ãµã¼ãã§ãã£ããããããã¯ã¨ã³ãã¦ã¼ã¶ãã¾ãã¯ã¨ã³ãã¢ããªã±ã¼ã·ã§ã³ã§ãã£ãããã¾ããããã§ã¯JDBCãODBCãOLE-DBã¨ãã£ãè¯ãç¥ãããä¸é£ã®APIãä»ãã¦ãã¼ã¿ãã¼ã¹ã«ã¢ã¯ã»ã¹ã§ããæ§ã ãªæ¹æ³ãæä¾ããã¦ãã¾ãã ã¾ãããã¼ã¿ãã¼ã¹ã¢ã¯ã»ã¹ã®ããã®å°ç¨ã®APIãæä¾ããã¦ãã¾ãã ãã¼ã¿ãã¼ã¹ã¨æ¥ç¶ããæé ã¯ä»¥ä¸ã®éãã§ãã ããã¼ã¸ã£ã¯æåã« èªè¨¼ãè¡ã ï¼ãã°ã¤ã³æ å ±ã¨ãã¹ã¯ã¼ãã®ç¢ºèªï¼ã次ã«ãã¼ã¿ãã¼ã¹ã«ã¢ã¯ã»ã¹ã§ãã 権é ãæã¡åããã¦ããããã§ãã¯ããããããã®ã¢ã¯ã»ã¹æ¨©ã¯DBAã«ãã£ã¦è¦å®ããã¦ããã ãã®å¾ãã¯ã¨ãªã管çã§ããããã»ã¹ï¼ãããã¯ã¹ã¬ããï¼ãå©ç¨å¯è½ããã§ãã¯ããã ãã¼ã¿ãã¼ã¹ã«é«è² è·ãããã£ã¦ããªããã©ããã確èªããã è¦æ±ããã¦ãããª
ãªã¬ã¼ã·ã§ãã«ãã¼ã¿ãã¼ã¹ã話é¡ã«æããã¨ããç§ã¯ä½ãã足ããªãã¨æããã«ã¯ãããã¾ããããã¼ã¿ãã¼ã¹ã¯ããããã¨ããã§ä½¿ããã¦ããããã®ç¨®é¡ããå°è¦æ¨¡ã§ä¾¿å©ãªSQLiteãããã¯ãã«ãªTeradataã¾ã§æ§ã ã§ãããããããããã©ãããä»çµã¿ã§æ©è½ãã¦ãããã説æãããã®ã¨ãªãã¨ããã®æ°ã¯ãããããã§ã¯ãªãã§ãããããä¾ãã°ããªã¬ã¼ã·ã§ãã«ãã¼ã¿ãã¼ã¹ ä»çµã¿ããªã©ã§æ¤ç´¢ãã¦ã¿ã¦ãã ããããããæ°ã®å°ãªããå®æã§ããã¨æãã¾ããããã«ãããã®è¨äºã¯çããã®ãã»ã¨ãã©ã§ããéã«ãè¿å¹´æµè¡ãã¦ããæè¡ï¼ããã°ãã¼ã¿ãNoSQLãJavaScriptãªã©ï¼ãæ¤ç´¢ããå ´åããããã®æ©è½ã詳ãã説æããè¨äºã¯ããããè¦ã¤ããã¨æãã¾ãã ãªã¬ã¼ã·ã§ãã«ãã¼ã¿ãã¼ã¹ã¯ããã¯ã大å¦ã®ææ¥ãç 究è«æãå°éæ¸ãªã©ã§ããæ±ãããªããããªå¤ãã¦éå±ãªæè¡ãªã®ã§ããããï¼ ç§ã¯éçºè ã¨ãã¦ãç解ãã¦ããªããã®ã
ã¯ã©ã¦ãæ代ã®æ°å¸¸èã¯ããã ï¼ãMySQL ã¯ã©ã¦ãåã InnoDB ãã¥ã¼ãã³ã°ã ããã«ã¡ã¯ãã¤ã³ãã©ã¨ã³ã¸ãã¢ã® nobuh ã§ãã æ ªå¼ä¼ç¤¾ã¤ã³ãµã¤ããã¯ããã¸ã¼æ§ä¸»å¬ã®Â db tech showcase sapporo 2015  ã 9æ10æ¥ã11æ¥ã®2æ¥éã«ããã£ã¦éå¬ããã¾ãã ã ä»åãå¼ç¤¾ãçºè¡¨ããæ©ä¼ãé ãã¾ããã®ã§ãã¤ã³ãã©ã¨ã³ã¸ãã¢ã¨ãã¦æ¥ã MySQL ã¨æ ¼éãã¦å¹ã£ããã¦ãã¦ã«ã¤ãã¦ã話ããã¦é ãã¾ããããã®çºè¡¨ã§ä½¿ã£ãã¹ã©ã¤ãããã¡ãã§ãã ã¯ã©ã¦ãä¸ã®ä»®æ³ãµã¼ãã¼ã使ã£ã¦ MySQL ã®ç®¡çããã¥ã¼ãã³ã°ã«æ¥ã éé²ããã¦ããæ¹ã ã«ã覧ããã ããã¨å¹¸ãã§ãã ä»ã¾ã§ã«ã MySQL ã«é¢ãã¦ããã¤ãè¨äºãæ²è¼ãã¦ãã¾ãã®ã§ããã®æ©ä¼ã«æ¯éã覧ãã ããï¼ â OSC2015åæµ·éã§ãããã ãã¿ãã°å¤§ä¸å¤«ã¼Cactiã«ããMySQLããã©ã¼ãã³ã¹ç£è¦ã®ããã
ããã«ã¡ã¯ãDBAã§ãã MySQL 5.6ã§InnoDBã®ãããã¡ãã¼ã«ã¦ã©ã¼ã ã¢ãããæ©è½è¿½å ããã¾ãããã¿ãªãã使ã£ã¦ã¾ããï¼ MySQL 5.6ã§ã¯æ£å¸¸çµäºæã®ãã³ããèµ·åæã®ãã¼ãããªãã対ãã¦MySQL 5.7ã§ã¯ä¸¡æ¹ã¨ããªã³ã§ããã¾ããMySQL 5.7ã§ã¯ãã³ããããããã¡ãã¼ã«ã®ãã¼ã¸æ°ã¯(ããã©ã«ãã§ãããã¡ãã¼ã«å ¨ä½ã®25%ã ããã¨ãªã£ã¦ãã¾ãã ãããã®ãªã¹ã¹ã¡è¨å®ã¯âã§ããMySQL 5.6, 5.7両æ¹ã§ã使ããããã«ãloose-æ¥é è¾ä»ãã§innodb_buffer_pool_dump_pct(5.7ã«ãã£ã¦5.6ã«ãªããã©ã¡ã¼ã¿ã¼)ãæ¸ãã¦ãã¾ãã [mysqld] loose-innodb_buffer_pool_dump_pct = 100 innodb_buffer_pool_dump_at_shutdown= 1 innodb_buffer_poo
ãã¼ãã«ãã¡ã¤ã« ã¾ããã¦ã¼ã¶ã®ãã¼ã¿ãä¿åãããã¼ãã«ãã¡ã¤ã«ã¨ãã®æ§é ã«ã¤ãã¦è§£èª¬ãã¾ãã 8kBåä½ã®ãããã¯åä½ã§æ§æããã åãããã¯ã®ä¸ã«å®ãã¼ã¿ã®ã¬ã³ã¼ãï¼ã¿ãã«ï¼ãé ç½® åºæ¬çã«è¿½è¨ã®ã¿ åé¤ãããåé¤ãã¼ã¯ãä»å ããï¼VACUUMã§ååï¼ ã¬ã³ã¼ãæ´æ°æã¯ãåé¤ï¼è¿½è¨ããè¡ãã PostgreSQLã®ãã¼ãã«ãã¡ã¤ã«ã¯ãåºæ¬çã«8kBåä½ã®ãããã¯ã§æ§æããã¦ãã¾ããå³ã«ããã¾ãããå ¨ä½ãã²ã¨ã¤ã®ãã¼ãã«ãã¡ã¤ã«ã ã¨èããã¨ããã®ä¸ã«ãããã¯1ããããã¯2ããããã¯3â¦ã¨ããããã«ã8kBåä½ã§ä½æããã¦ãã¾ãã åãããã¯ã®ä¸ã«å®ãã¼ã¿ã®ã¬ã³ã¼ãï¼ã¿ãã«ï¼ãå ¥ã£ã¦ããã¨ããæ§é ã«ãªã£ã¦ãã¾ãã第3ç« ã§ãµã³ãã«ãè¦ãªãã解説ãã¾ããããåºæ¬çã«ã¯è¿½è¨ãããã ãã§ãupdateãããæã«ã¯éãã¬ã³ã¼ãã¨ãã¦è¿½è¨ãã¦ãããã¨ããããã¿ã«ãªã£ã¦ããã¾ãã å³å´ã«ã¯ãã¼ãã«ã®çµ±è¨
DELETE_FLAG ã¨ããæèåæ¢ãã©ã° DELETE_FLAG ã¨ãã boolean ã®åã DB è¨è¨ã§ãã話é¡ã«ãªãã¾ãã è«çåé¤ã¨ããè¨èã§ä¸æã«è«çæ¦è£ ããã¹ããè¦ããã¨ããã«å ¥ãããã人ãããã ä¸æ¹ã§ããã«ã¤ããå対ãã人ããã¾ãã èªåã®çµé¨ã¨ãã¦ã¯ãåºç¾©ã®è«çåé¤ã¯ããããã¨æãã¾ãããå®ç¾æ¹æ³ã DELETE_FLAG ã ã¨ãªã£ãæãããã¯ãã¾ãèãã¦ãªãã§ãªãã¨ãªããã¿ã¼ã³ã¨ãã¦çãè¾¼ãã§ãå ´åãå¤ãã¨æãã¾ãã ãã ããè¨è¨ã«å¯ä¸ã®çãã¯ç¡ãã®ã§ãããããããããã妥å½ãªè¨è¨ã§ããå ´åãããããããã¾ããã ä»åã¯ãDELETE ãã©ã°ããªããã¡ãªã®ãï¼ããªã©ã¨ãã話ãããã¤ããããã¢ã³ããã¿ã¼ã³ã ã¨æè¨ããã¤ãããããã¾ããã åé¡ã¯ãä»æ§ããã¡ãã¨ææ¡ããã¨ããæé©ãªè¨è¨ã¯ DELETE_FLAG ã§ã¯ãªããã¨ããå ´åãæã£ã¦ããã®å ´åã¯ããã®æé©ãªè¨è¨
Percona Toolkitã¯MySQLçã«é¢ãã便å©ãªã³ãã³ãã©ã¤ã³ãã¼ã«ã®éã¾ãã§ãã Percona Toolkit Documentation ä»åã¯åãã¼ã«ã®æ©è½ãç°¡åã«ç´¹ä»ãã¾ãã ç´°ãã使ç¨æ¹æ³ã«é¢ãã¦ã¯éæ追è¨äºå®ã pt-align ãã¡ã¤ã«ãæ¨æºå ¥åãåãåããåãæãã¾ãã
ã©ã³ãã³ã°
ã©ã³ãã³ã°
ã©ã³ãã³ã°
ãªãªã¼ã¹ãé害æ å ±ãªã©ã®ãµã¼ãã¹ã®ãç¥ãã
ææ°ã®äººæ°ã¨ã³ããªã¼ã®é ä¿¡
å¦çãå®è¡ä¸ã§ã
j次ã®ããã¯ãã¼ã¯
kåã®ããã¯ãã¼ã¯
lãã¨ã§èªã
eã³ã¡ã³ãä¸è¦§ãéã
oãã¼ã¸ãéã
{{#tags}}- {{label}}
{{/tags}}