这就是问题所在,我想要显示表中某一列的月份、计数和平均值,但当我尝试按月对其进行分组时,我总是得到一个错误。NOT NULL GROUP BY MONTH(ContractDate)[Microsoft][SQLServer Native Client 10.0][SQLServer]
Column 'dashboard.ContractDate' is invali
我想使用它类似于SQL中的DATEPART(月份,日期字段)。我还想按月对总数进行分组。Her is my Zend select sql: $where->greaterThanOrEqualTo('date', $start_datefunction(Select $select) use $select->columns(array('date', '
我想在ssis包中按月计算每天的小时数。为此,我编写了以下sql代码:select year(forecastdate) as y, month(forecastdateForecastHrsEnd) as pgroup by year(forecastdate), month(forecastdate)
并且,下面的查询计算实际小时的总和,并按月对日期进行分组