mysql格式化日期

mysql> select FROM_UNIXTIME(1344887103);  
+---------------------------+  
| FROM_UNIXTIME(1344887103) |  
+---------------------------+  
| 2012-08-14 03:45:03       |  
+---------------------------+  
1 row in set (0.00 sec) 

2、FROM_UNIXTIME( unix_timestamp ，format ) 
　　参数 unix_timestamp ：与方法 FROM_UNIXTIME( unix_timestamp ) 中的参数含义一样； 
　　参数 format : 转换之后的时间字符串显示的格式; 
　　返回值：按照指定的时间格式显示的字符串；

mysql> select FROM_UNIXTIME(1344887103,‘%Y-%M-%D %h:%i:%s‘);  
+-----------------------------------------------+  
| FROM_UNIXTIME(1344887103,‘%Y-%M-%D %h:%i:%s‘) |  
+-----------------------------------------------+  
| 2012-August-14th 03:45:03                     |  
+-----------------------------------------------+  
1 row in set (0.00 sec)  
mysql> select FROM_UNIXTIME(1344887103,‘%Y-%m-%D %h:%i:%s‘);  
+-----------------------------------------------+  
| FROM_UNIXTIME(1344887103,‘%Y-%m-%D %h:%i:%s‘) |  
+-----------------------------------------------+  
| 2012-08-14th 03:45:03                         |  
+-----------------------------------------------+  
  
1 row in set (0.00 sec) 

 3、判断是不是同一天：

SELECT tbl_gamedata.GameMapName,tbl_playerdata.GameMode, tbl_gamedata.MatchMode, tbl_playerdata.GameResult, SUM(tbl_playerdata.GameIsWin) AS tday_winCount, 
          SUM(tbl_playerdata.AssistCount) AS tday_assistCount,SUM(tbl_playerdata.KillCount) AS tday_killCount,
          SUM(tbl_player_title.ThreeKill) AS tday_threeKill,SUM(tbl_player_title.FourKill) AS tday_fourKill,SUM(tbl_player_title.FiveKill) AS tday_fiveKill
   FROM tbl_playerdata 
     LEFT JOIN tbl_gamedata ON tbl_playerdata.GameID = tbl_gamedata.GameID
     LEFT JOIN tbl_player_title ON tbl_player_title.GameID = tbl_playerdata.GameID AND tbl_player_title.PlayerID = tbl_playerdata.PlayerID
   WHERE tbl_playerdata.PlayerID = user_id AND (tbl_playerdata.GameResult = 2 OR tbl_playerdata.GameResult = 3) AND TO_DAYS(FROM_UNIXTIME(tbl_playerdata.GameStartTime)) = TO_DAYS(NOW()) 
   GROUP BY tbl_gamedata.GameMapName, tbl_playerdata.GameMode,tbl_gamedata.MatchMode,tbl_playerdata.GameResult;

其中TO_DAYS(FROM_UNIXTIME(tbl_playerdata.GameStartTime)) = TO_DAYS(NOW()) 就是我们需要的判断

mysql格式化日期

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