SQL(Structured Query Language)ã¨ã¯IBMãéçºãããã®ã§ relational databaseã®æä½ãè¡ãããã®è¨èªã§ããï¼ ä¸»ãªæä½æ¹æ³ã¯ä»¥ä¸ã®4種é¡ã§ããï¼ SELECT æå®ããç¹æ§ãæã¤ã¬ã³ã¼ããã¹ã¦ãæ¢ãåºã SELECT firstname FROM people WHERE lastname='takeda' lastnameã'takeda'ããã®firstnameãåå¾ãã INSERT ã¬ã³ã¼ãããããã«è¿½å ãã INSERT INTO people VALUE ('Taro', 'Hanako', 987, NULL, 24, 'M') æ°ãã«Hanako Taroããã®ã¬ã³ã¼ãã追å ãã DELETE ã¬ã³ã¼ããåé¤ãã DELETE FROM people WHERE id = 29 idã29ã®ã¬ã³ã¼ããåé¤ãã UPDATE ã
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