varsql=$@"SELECT * FROM {viewName} where STR_TO_DATE(concat(Year,'-',Month),'%Y-%m') >= '{BeginTime}' and STR_TO_DATE(concat(Year,'-',Month),'%Y-%m') <= '{EndTime}'";
varsql=$@"SELECT * FROM {viewName}
where STR_TO_DATE(concat(Year,'-',Month,'-01'),'%Y-%m-%d') >= @beginTime
and STR_TO_DATE(concat(Year,'-',Month,'-01'),'%Y-%m-%d') < @endTime";