查詢日期

一、使用Between AND

select * from BatchNumberInfo where Start_Time Between '2019-1-01 00:00:00' AND '2019-7-12 23:59:59'

二、使用>,<

select * from BatchNumberInfo where Start_Time > '2019-1-01 00:00:00' and Start_Time < '2019-12-12 23:59:59'

注意：sqllite的datetime字符串形式第一個是"yyyy-M-dd HH:mm:ss"，第二個是'yyyy-M-dd hh:mm:ss'

/// <summary>/// 按日期查詢/// </summary>private string QueryByDate(){string date1 = this.inquirePage.dateTimePicker1.SelectedDate?.ToString("yyyy-M-dd HH:mm:ss");DateTime temp1;DateTime temp2;string date2 = string.Empty;if (this.inquirePage.dateTimePicker2.SelectedDate != null){temp1 = this.inquirePage.dateTimePicker2.SelectedDate.Value;temp2 = new DateTime(temp1.Date.Year, temp1.Date.Month, temp1.Date.Day, 23, 59, 59);date2 = temp2.ToString("yyyy-M-dd HH:mm:ss");}if (date1 == null || date2.Equals(string.Empty)){MessageBox.Show("時間格式錯誤!");return string.Empty;}string sql = "select * from BatchNumberInfo where Start_Time > '" + date1 + "' and End_Time < '" + date2 + " '";return sql;}

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