oracle按时间分组查询语句

-- 某一时间段按年分组查询数据
SELECT  TO_CHAR(A.APPLICATION_DATE, ' YYYY ' ) GROUPSTYLE, COUNT ( * ) DATECOUNT
FROM  APPLY_TO_ROAD A
WHERE  A.APPLICATION_DATE  BETWEEN  TO_DATE( ' 2008-06-01 ' , ' YYYY-MM-DD ' )  AND  SYSDATE
GROUP   BY  TO_CHAR(A.APPLICATION_DATE, ' YYYY ' );

-- 某一时间段按月分组查询数据
SELECT  TO_CHAR(A.APPLICATION_DATE, ' YYYY-MM ' ) GROUPSTYLE, COUNT ( * ) DATECOUNT
FROM  APPLY_TO_ROAD A
WHERE  A.APPLICATION_DATE  BETWEEN  TO_DATE( ' 2008-6 ' , ' YYYY-MM ' )  AND  SYSDATE
GROUP   BY  TO_CHAR(A.APPLICATION_DATE, ' YYYY-MM ' );

-- 某一时间段按天分组查询数据
SELECT  TO_CHAR(A.APPLICATION_DATE, ' YYYY-MM-DD ' ) GROUPSTYLE, COUNT ( * ) DATECOUNT
FROM  APPLY_TO_ROAD A
WHERE  A.APPLICATION_DATE  BETWEEN  TO_DATE( ' 2010-6-1 ' , ' YYYY-MM-DD ' )  AND  SYSDATE
GROUP   BY  TO_CHAR(A.APPLICATION_DATE, ' YYYY-MM-DD ' );

-- 某一时间段按季分组查询数据
SELECT  TO_CHAR(A.APPLICATION_DATE, ' Q ' ) GROUPSTYLE, COUNT ( * ) DATECOUNT
FROM  APPLY_TO_ROAD A
WHERE  A.APPLICATION_DATE  BETWEEN  TO_DATE( ' 2010-6-1 ' , ' YYYY-MM-DD ' )  AND  SYSDATE
GROUP   BY  TO_CHAR(A.APPLICATION_DATE, ' Q ' );

-- 某一时间段按周分组查询数据
SELECT  TO_CHAR(A.APPLICATION_DATE, ' IW ' ) GROUPSTYLE, COUNT ( * ) DATECOUNT
FROM  APPLY_TO_ROAD A
WHERE  A.APPLICATION_DATE  BETWEEN  TO_DATE( ' 2010-6-1 ' , ' YYYY-MM-DD ' )  AND  SYSDATE
GROUP   BY  TO_CHAR(A.APPLICATION_DATE, ' IW ' );

参考资料连接：http: // westlife063.blog. 163 .com / blog / static / 12994209620103309313615 /

转载于:https://www.cnblogs.com/skyrickie/articles/1996913.html