# SQLãã¥ã¼ãã³ã° çè«ã¨æ¹åã®å®ä¾ - 2019-11-15 éå¬ã®PostgreSQL Conference Japan 2019 ã®çºè¡¨ã¹ã©ã¤ãã§ã
æ®æ®µã¯ã¢ããªã±ã¼ã·ã§ã³ã¬ã¤ã¤ã®ä»äºããã¦ãããããããã¼ã¿ãã¼ã¹ã¯ãã¼ã¿ãå ¥ãã¦ãããã ã®ç®±ãã¨ããçºæ³ã§ããããããããã«ããã¯ã¾ããã ãããã¨æããã¡ãåå¼·ä¸ã§ãã ã¨ãã«ãã¼ã¿ãã¼ã¹ãå°éé åã¨ããããã§ã¯ãªãã®ã§ãééããããã°æãã¦ãã ããã æ¤è¨¼ãã¼ã¸ã§ã³ PostgreSQL 10.5 èªåãã«ã ã¯ããã« PostgeSQL ã«ããããã¼ã¿ã®å®æ ã¯ãã¡ã¤ã«ã è¨ãã¾ã§ããªããããã£ã¹ã¯ã«æ¸ããããã¨ã§ãã¼ã¿ãæ°¸ç¶åããã ããããã¡ã¢ãªã¨æ¯è¼ãã¦ãã£ã¹ã¯ã¸ã®èªã¿æ¸ãã¯é常ã«é ãã åè ããã°ã©ãã¼ãç¥ã£ã¦ããã¹ããPCå é¨ã®éä¿¡é度ã ãã®ããããã£ã¹ã¯ã¢ã¯ã»ã¹ãã§ããéãæ¸ããã¦ãããé«éã«ã¢ã¯ã»ã¹ã§ããã¡ã¢ãªã§å¦çãã¦ãããããç¨åº¦ã¾ã¨ãã¦ãã£ã¹ã¯ã«æ¸ãåºãã°æ©ããããªããã(No Force = ã³ããã æã«ãã£ã¹ã¯ã¸æ¸ãè¾¼ã¾ãªãããã¤ã誰ããããã) ããããã®
å³1ã主ãªããã»ã¹ã®æµã PostgreSQLã¯ãã©ã¤ã¿ããã¼ã¿ãã¡ã¤ã«ãã¤ã³ããã¯ã¹ãã¡ã¤ã«ããã£ã¹ã¯ã«æ´æ°ãã¦ãã¾ãããã ãããã®æ´æ°ã¯ãã³ãããã«åããã¦ãªã¢ã«ã¿ã¤ã ã§è¡ããã¦ããããã§ã¯ããã¾ãããæ§è½åä¸ã®ããããã§ãã¯ãã¤ã³ãã¨å¼ã°ããæ´æ°ã¿ã¤ãã³ã°ãçºçããã¾ã§ã¯ãæ´æ°ããã£ã¦ãå ±æãããã¡ã«ãã¼ã¿ã貯ãã¦ããã¾ãããã®è²¯ãããããã¼ã¿ããã¼ãã£ãã¼ã¸ã¨å¼ã³ã¾ããããã¦ãã§ãã¯ãã¤ã³ãã®ã¿ã¤ãã³ã°ã§ããã§ãã¯ãã¤ã³ã¿ããã¼ãã£ãã¼ã¸ããã£ã¹ã¯ã«æ¸ãè¾¼ã¿ã¾ãã ãã®ãããå ±æãããã¡ã«æ´æ°æ å ±ã貯ãã¦ããéã«é害ãèµ·ããã¨ããã¼ãã£ã¼ãã¼ã¸ã失ãå¯è½æ§ãããã¾ãããããé²ãããã«ãå ±æãããã¡ä¸ã®ãã¼ã¿ã«å¯¾ãã¦ã©ã®ãããªæ´æ°ãè¡ã£ããã®æ å ±ãä¿åãã¦ããã®ãWALã§ããWALã¯ã³ãããã®ã¿ã¤ãã³ã°ã§WALã©ã¤ã¿ãè¨é²ãã¦ãã¾ããã¯ã©ãã·ã¥ãªã«ããªãå¿ è¦ã«ãªã£ãã¨ãã¯ãWALã®ä¸
ãã®ãã¼ã¸ã§ã¯ PostgreSQL 11ï¼2018/10/18ãªãªã¼ã¹ï¼ ã«é¢ããæè¡æ å ±ããå±ããã¾ãã æ¬ããã¥ã¡ã³ã㯠PostgreSQL ã®ãªãªã¼ã¹ãã¼ããå ã«å¼ç¤¾ã§è§£èª¬ãå ãããã®ã§ãã ãã¼ã¸ã§ã³11ã®ä¸»ãªæ¡å¼µç¹ ãã¼ã¸ã§ã³11ã§ã®ä¸»ãªæ¡å¼µç®æã¯ä»¥ä¸ã®éãã§ãã ããã·ã¥ãã¼ã«ãããã¼ãã£ã·ã§ãã³ã°ãå¯è½ã«ãªãã¾ããã ãã¼ãã£ã·ã§ã³ãã¼ãã«ã«å¯¾ãã¦ä¸»ãã¼å¶ç´ãå¤é¨ãã¼å¶ç´ãã¤ã³ããã¯ã¹ããã¦ããªã¬ã¼ãä½æã§ããããã«ãªãã¾ããã ã©ã®ãã¼ãã£ã·ã§ã³ã«ããããããªããã¼ã¿ç¨ã«ããã©ã«ããã¼ãã£ã·ã§ã³ã®ä½æãå¯è½ã«ãªãã¾ããã ãã¼ãã£ã·ã§ã³ãã¼åã«å¯¾ããæ´æ°ãè¡ã£ãéã«ããã®å½±é¿ãåããã¬ã³ã¼ããé©åãªãã¼ãã£ã·ã§ã³ã«ç§»åãããããã«ãªãã¾ããã ãã¼ãã£ã·ã§ã³ãã¼ãã«ã«å¯¾ãã SELECT ã®ããã©ã¼ãã³ã¹ãåä¸ãã¾ããã B-tree ã¤ã³ããã¯ã¹ãä½æãã CREAT
SQLã®è¦³ç¹ãããOracle DatabaseããPostgreSQLããMySQLãã®ç¹å¾´ãæ´çãããï¼ ä¼æ¥ã®æ å ±ã·ã¹ãã ã§å©ç¨ããã¦ããRDBMSã§ã¯ãè¿å¹´ã¯åç¨ãã¼ã¿ãã¼ã¹ã ãã§ãªããªã¼ãã³ã½ã¼ã¹ã»ãã¼ã¿ãã¼ã¹ãä½µç¨ããã±ã¼ã¹ãå¢ãã¦ãããé¸æè¢ã¯å¤æ§åãã¦ãã¾ãããåãã®éããSQLã¯RDBMSå ±éã®è¨èªã§ãããå®éã¯ç´°ããªè¨è¿°ã®éããRDBMSç¬èªã®æ©è½ãå¤æ°åå¨ãã¾ãããã®ãããä¾ãã°åç¨ãã¼ã¿ãã¼ã¹ãããªã¼ãã³ã½ã¼ã¹ã»ãã¼ã¿ãã¼ã¹ã«ç§»è¡ãããä½µç¨ãããããã¨ãã¢ããªã±ã¼ã·ã§ã³ã®æ¹ä¿®ã³ã¹ãããæå³ããéãã«åä½ããªãã¨ãã£ãåé¡ãçºçããå ´åãããã¾ããæ¬è¨äºã§ã¯ãSQLã®è¦ç¹ããRDBMSã®ä¸»ãªå·®ç°ãç´¹ä»ããç°ãªãRDBMSã«ç§»è¡ããéã®æ³¨æç¹ãRDBMSé¸å®ã®ãã¤ã³ãã«è¿«ãã¾ãã
The PostgreSQL Global Development Group today announced the release of PostgreSQL 10, the latest version of the world's most advanced open source database. A critical feature of modern workloads is the ability to distribute data across many nodes for faster access, management, and analysis, which is also known as a "divide and conquer" strategy. The PostgreSQL 10 release includes significant enhan
ã¯ããã« PostgreSQLã¯åç¨DBã«æ¯ã¹ã¦æ¸ç±ãå°ãªããã¾ã¨ã¾ã£ãæ å ±ãå ¥æãã«ããã§ããã¾ããæå¿ã®æ¹ãPostgreSQLã«é¢ããè³æãå ¬éãã¦ãã¾ãããæ£å¨ãã¦ããããã£ããã®æçãªæ å ±ã«ã¢ã¯ã»ã¹ãã«ããç¶æ³ã«ããã¾ãã ããã§ãæ¬ã¨ã³ããªã§ã¯PostgreSQLã®å®è¡è¨ç»ã«ç¦ç¹ãçµããå ¬éããã¦ããæç¨ãªè³æï¼æ¸ç±å«ãï¼ãã¾ã¨ãã¾ãããèªã¿è¿ãããè³æãæ¢ãããããããããå 容ã®ãã¤ã³ããä½µãã¦ç´¹ä»ãã¦ã¾ãã æ¬ã¨ã³ããªããã£ããã«ããããã®è³æãããã«æ´»ç¨ããããã¨ãé¡ã£ã¦ãã¾ãã åæ åè³æã®åæã¨ãã¦ããPostgreSQLã®ãã¼ã¸ã§ã³ã¯ç°ãªããã¨ã«ã注æãã ããã調æ»å¯¾è±¡ã®PostgreSQLã®ãã¼ã¸ã§ã³ãç°ãªãã°ãç¶æ³ã¯å¤ãã£ã¦ããããããã¾ããã åè³æã«ã¯å 容ã®éè¤ããããã»ã¼åä¸å 容ã®å ´åãããã¾ããéè¤ãã¦ããå 容ã«ã¤ãã¦ã¯ãã¤ã³ãããå²æãããã¨ãããã¾
ããã«ã¡ã¯ãhachi8833ã§ããä»åã¯ãRailséçºè ã®ããã®PostgreSQLã®ä¾¿å©æãã®Craig Kerstiensæ°ã®å¥ã®è¨äºããã®ç¿»è¨³ããéããããã¾ããå è¨äºãå ¬éãããã®ã¯2016å¹´åé ã§ãããä»ãéç¨ããé¨åãå¤ãããã¨æãã¾ãã ãªãã翻訳æç¹ã§ã®PostgreSQLã®ææ°ãã¼ã¸ã§ã³ã¯9.6.3ã§ãã æ¦è¦ åèè ãã許諾ãå¾ã¦ç¿»è¨³ã»å ¬éãããã¾ãã å è¨äº: My Top 10 Postgres Features and Tips for 2016 èè : Craig Kerstiens: PostgreSQLã®ã¯ã©ã¦ãã¹ã±ã¼ãªã³ã°ãµã¼ãã¹ã§ç¥ãããCitus Dataã®ã¡ã³ãã¼ã§ãããHerokuã«ãå¨ç±ãããã¨ãããã¾ãã PostgreSQLã®æ©è½ããã10ï¼2016å¹´çï¼ï¼ç¿»è¨³ï¼ ãã®ä¼æä¸ã¯ãæ°ããæ¬ãè¦ã¤ããããæ°ããè¨èªãå¦ãã ããä»ã®ããããªã¹ã
ãã®ããã°ã«éãå®å ¨ã«èä½æ¨©ãæ¾æ£ãã¾ã(ããã¾ã§ãã®ããã°ã ããä»ã®ããã°ãããã³ä¸ã®è±èªææ¸ã¯ç¯å²å¤)ãåæã«ä½¿ã£ã¦ããã2016.12.20 å ¬éããææ¸ã®ããä¸é¨ãã翻訳ãã¦å ¬éã(BLOGã«ããã«ããããæ§æã¯å¤ããã) http://www.interdb.jp/pg æ¦è¦ checkpoint_segmentsãå»æ¢ãããWALãã¡ã¤ã«æ°ã®ä¸éä¸éãmax_wal_sizeã¨min_wal_sizeã§æå®ã§ããããã«ãªã£ãã WALãã¡ã¤ã«æ°ã¯(ãããã®å¶éå ã§)ãµã¼ãã®æ´»åç¶æ³=WALãã¡ã¤ã«ã®æ¶è²»éã«åããã¦å¤åããããã¾ãæ¸ãè¾¼ã¿ããªããã°WALæ°ã¯æ¸å°ããæ´»çºã«ãªãã°WALæ°ãå¢ããã ä¿åããWALæ°ã¯åºæ¬çã«ãªã«ããªã«å¿ è¦ä¸å¯æ¬ ãªãã®ã«éãããç¡é§ãªWALãã¡ã¤ã«ãæºãè¾¼ãäºã¯ç¡ããªã£ãã ç解ã®ããã®åææ¡ä»¶ CHECKPOINTã®èµ·åã¿ã¤ãã³ã° CHECKPO
ã¡ã³ããã³ã¹
ãç¥ãã
é害
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}}