分组查询:
https://www.cnblogs.com/netserver/p/4518995.html
日期格式化格式:
http://blog.csdn.net/qq_16769857/article/details/52289627
日期和字符串之间的转换:
https://www.cnblogs.com/windphoenix/archive/2013/04/26/3044784.html
日期的模糊查询:
https://zhidao.baidu.com/question/507141127.html
SELECT a.*
FROM WATERQuarter a INNER JOIN
(SELECT datacd, MAX(tm) tm
FROM waterQuarter
GROUP BY datacd) b ON a.DATACD = b.datacd AND a.TM = b.tm
AND CONVERT(varchar, a.TM, 23) LIKE ‘2017-11-24%‘
ORDER BY a.TM DESC
SELECT a.*
FROM WATERQuarter a INNER JOIN
(SELECT datacd, MAX(tm) tm
FROM waterQuarter
GROUP BY datacd) b ON a.DATACD = b.datacd AND a.TM = b.tm
WHERE CONVERT(varchar, a.TM, 23) LIKE ‘2017-11-24%‘
ORDER BY a.TM DESC
SELECT a.*
FROM WATERQuarter a INNER JOIN
(SELECT datacd, MAX(tm) tm
FROM waterQuarter
GROUP BY datacd) b ON a.DATACD = b.datacd AND a.TM = b.tm AND
CONVERT(varchar, a.TM, 23) LIKE CONVERT(varchar, GETDATE(), 23)
ORDER BY a.TM DESC