æ¥ä»å½¢å¼ã¾ãã¯æ¥ä»æå»å½¢å¼ã§æå®ããæ¥ä»dateã®ææ¥ã¤ã³ããã¯ã¹ï¼1=æ¥ã2=æã3=ç«ã4=æ°´ã5=æ¨ã6=éã7=åï¼ãè¿ãã¾ãã åå¨ããªãæ¥ä»ãæ¥ä»æå»ãæå®ããå ´åã¯ãNULLãè¿ãã¾ãã mysql> SELECT DAYOFWEEK('2006-12-25'); Enter +-------------------------+ | dayofweek('2006-12-25') | +-------------------------+ | 2 | +-------------------------+ 1 row in set (0.00 sec) mysql> SELECT DAYOFWEEK('2006-12-25 23:50:00'); Enter +----------------------------------+ | dayofweek('2006-12-
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