Redshiftã¯åã¬ãã«ã§å§ç¸®å½¢å¼ãé¸ã¶ãã¨ãã§ããããã«ãã以ä¸ã®å¹æãå¾ãããã ã¹ãã¬ã¼ã¸ã¹ãã¼ã¹ãç¯ç´ ãã¼ã¿ã®ãµã¤ãºã軽éå => ãã£ã¹ã¯ I/O ã®éãæ¸å° => ã¯ã¨ãªããã©ã¼ãã³ã¹ãåä¸ ãã®ã¨ã³ã³ã¼ãã£ã³ã°ã®å½¢å¼ãããããããã®ã§ãå ¬å¼ã®å 容ãå ã«è»½ãã¡ã¢ã ã¨ã³ã³ã¼ãã£ã³ã°ã®æå®æ¹æ³ ã¨ã³ã³ã¼ãã£ã³ã°ã®æå®ã¯ãCREATE TABLEã¨ALTER TABLEæã®ã¿ã æ¢åã®ã«ã©ã ã®ã¨ã³ã³ã¼ãã£ã³ã°ã®å¤æ´ã¯ããã£ã½ãã # æ°è¦ä½ææ CREATE TABLE products ( id INT encode delta, name CHAR(20) encode bytedict ); # ã«ã©ã 追å æ ALTER TABLE products ADD created_at date encode delta32k;
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