ãªã¼ãã³ã½ã¼ã¹ãã¼ã¿ãã¼ã¹ãå éããããã ã©ãã¼ãã¼ãã®ããã°ã§ããã«ã¬ã¼æ¥è¨ãå ¼ãã¦ã¾ãããªãèè ã¯2010-06-01ããæ¥æ¬ãªã©ã¯ã«ã«å¨ç±ãã¦ãã¾ãããæ¬ãµã¤ãï¼ããã°ãã¾ãã¯ã¦ã§ããµã¤ãï¼ã«ããã¦ç¤ºããã¦ããè¦è§£ã¯ãç§èªèº«ã®è¦è§£ã§ãã£ã¦ããªã©ã¯ã«ã®è¦è§£ãå¿ ãããåæ ãããã®ã§ã¯ããã¾ããã ååã¨åæ§ã«ã¦ã¼ã¶å¤æ°ã使ã£ã¦ãrank()ãå®è£ ãã¦ã¿ã¾ããåºæ¬çãªèãæ¹ã¯ååã¨åãã§ãããåè¡ãã·ã¼ã±ã³ã·ã£ã«ã«ã«ã¦ã³ãããããã®å¤æ°@rownumãç¨æãã(@preval = sal)ãçãããªããã°@rownumãè¿ãããã«ãã¾ããåè¡ãå¤ãè¿ããã«@rownumãã«ã¦ã³ãã¢ããããããã«ãIF()ã®æ¡ä»¶ã®ã¨ããã«ã(@rownum := @rownum + 1)ãç½®ãã¦ãã¾ããããã¯ãå¿ ãTRUEã«ãªããããã«ã¦ã³ãã¢ããããå¦çãããã ãã§ãã [2008-12-24 追è¨] æ¯
ç¾å¨ãç±³å½ã§è¡ããã¦ããMySQL Conference & Expoã«ãããã¦ãæ°ããéçºçã§ããMySQL 5.6ãçºè¡¨ããããMySQL 5.5ã«ãããæ°æ©è½ãããªãã®ãã®ã ã£ãããMySQL 5.6ã®é²åã¯è³ªã»éã¨ãã«åã¨ãå£ããªãå 容ã¨ãªã£ã¦ãããããã§ãä»æ¥ã¯ç°¡åã«ãMySQL 5.6ã§è¿½å ãããæ°æ©è½ã®æ¦è¦ã«ã¤ãã¦è¦ã¦ã¿ãããéçºçãªã®ã§å©ç¨ã«ããã£ã¦ã¯ååãªæ³¨æãå¿ è¦ï¼äºæãªãäºå®ãå¤æ´ãããå¯è½æ§ããï¼ã ãã次ææ£å¼çã®ãªãªã¼ã¹ã«åãã¦æ¯é試ãã¦ã¿ã¦æ¬²ããã InnoDBé¢é£MySQL 5.5ã§å¤§å¹ ãªé²åãéããInnoDBã ãããã®å¢ãã¯ã¾ã£ããè¡°ãããã¨ãç¥ããªããæ§è½ã®å¼·åã ãã§ãªããçãã¨ããã«æãå±ã便å©ãªæ©è½ã追å ããã¦ããã ãã¼ãã£ãã¼ã¸ã®ãã©ãã·ã¥ãããã¹ã¬ãããç¬ç«ããã以åã¯ãã¹ã¿ã¼ã¹ã¬ããå ã§ãã©ãã·ã¥ãè¡ããã¦ããããã¹ã¬ãããç¬ç«ãããã¨ã«ãã£
ããã«ã¡ã¯ããã«ã¡ã¯ãæè¿ãè ¹çãã°ã£ããè¨ã£ã¦ããã¨ã§æåãªiwanagaã§ãã DeNAã¯å¤é¨çã«ã¯ãã©ãããã©ã¼ã çãªé¨åã®æ¹ããã£ã¼ãã£ã¼ããããã¨ãå¤ãã§ãããå®ã¯ã½ã¼ã·ã£ã«ã²ã¼ã ã®æä¾ãè¡ã£ã¦ãã¾ããæªçãã¯ã¤ã¤ã«ã¨ããã©ããã§èãããã¨ãããã®ã§ã¯ãªãã§ããããã åã¯DeNAã§ã½ã¼ã·ã£ã«ã²ã¼ã ãèªçãã辺ããããã£ã¨ãµã¼ããµã¤ããè¦ã¦ãã¾ãããããããªéç¨ã®ä¸ã§èªåã貯ãã¦ããç¥è¦ã¨ãTIPSããç´¹ä»ãããã¨æãã¾ãã ãããã10ã¿ã¤ãã«è¿ãã¯ã¬ãã¥ã¼ãããéç¨ããããã¦ãããçµæ§è¨ããããã¨ã¯ãã£ã±ãããã®ã§ãå°åºãã«ãã¤ã¤è©å¤ãããã°æ¬¡ãæ¸ãã¾ãã ã½ã¼ã·ã£ã«ã²ã¼ã ã®ããã®MySQLå ¥éä¸è¦§ ã½ã¼ã·ã£ã«ã²ã¼ã ã®ããã®MySQLå ¥é - Technology of DeNA ã½ã¼ã·ã£ã«ã²ã¼ã ã®ããã®MySQLå ¥é2 - Technology of DeNA ãMySQL
ã¢ãã²ã¼ã§ç¥ãããDeNAã¯ãããã¯ã¨ã³ããã¼ã¿ãã¼ã¹ã«NoSQLã使ã£ã¦ãã¾ããããªããï¼ ããã¯MySQL/InnoDB 5.1ã®ç°å¢ã§ç§é75ä¸ã¯ã¨ãªã¨ãããå¤ãã®NoSQLã§ãå®ç¾ã§ããªããããªé«æ§è½ãå®ç¾ãã¦ãããããDeNAã®æ¾ä¿¡åç¯ï¼ã¾ã¤ã®ã¶ããã®ãï¼æ°ã¯ãèªèº«ã®ããã°ã«ãããªå 容ã®ã¨ã³ããªãUsing MySQL as a NoSQL - A story for exceeding 750,000 qps on a commodity serverãï¼è±èªï¼ããã¹ããã¦ãã¾ãã Yoshinori Matsunobu's blog: Using MySQL as a NoSQL - A story for exceeding 750,000 qps on a commodity server æ¾ä¿¡æ°ãææããããã«ã大è¦æ¨¡ãªããããµã¼ãã¹ãæä¾ãã¦ããä¼æ¥ã®å¤ãã¯åæ£ç°å¢ã§
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}}