selectæã§group byããæã¯ãselectå¥ã®ä¸ã§ã°ã«ã¼ãã³ã°é¢æ°ã使ã£ã¦ãªãã¨ãããã®ã¾ãã¾group byã«ããè¾¼ãã°è¯ãã¨è¦ãã¦ãã人ã¯å¤ãã¨æããä¾ãã°ä¸è¨ã®ããã«ã SQLã®æå³ï¼ã2013年度ã«ç´åããããã¸ã§ã¯ãæ°ã¨ãã以å¤ã®ããã¸ã§ã¯ãæ°ãã確èªããã select case when ( '2013-04-01' <= nouhinbi and nouhinbi <= '2014-03-31' ) then 1 else 0 end , count(*) from t_nouhinbi group by case when ( '2013-04-01' <= nouhinbi and nouhinbi <= '2014-03-31' ) then 1 else 0 end ;


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