我正在尝试使用sqlite在c#中选择startdate和enddate之间的行。
我的日期格式如下:
2015-05-16T17:22:04.920+02:00
应该是sqlite的有效格式(ref:http://www.sqlite.org/lang_datefunc.html)
我正在尝试选择这样的行:
string CmdString = "SELECT * FROM " + tablename + "WHERE DATETIME(timekey) >= DATETIME('2015-05-16T17:22:04.920+02:00') AND DATETIME(timekey) <= DATETIME('2015-05-16T17:24:04.920+02:00')";
SQLiteCommand cmd = new SQLiteCommand(CmdString, con);
SQLiteDataAdapter sda = new SQLiteDataAdapter(cmd);
DataTable MatchDt = new DataTable();
sda.Fill(MatchDt);
我得到的错误是:
SQLiteException: SQL logic error or missing database
我做错了什么?
答案 0 :(得分:0)
您在where:
之前缺少空格字符string CmdString = "SELECT * FROM " + tablename + " WHERE DATETIME(timekey) >= DATETIME('2015-05-16T17:22:04.920+02:00') AND DATETIME(timekey) <= DATETIME('2015-05-16T17:24:04.920+02:00')";
我建议使用BETWEEN
运算符:
string CmdString = "SELECT * FROM " + tablename + " WHERE DATETIME(timekey) BETWEEN DATETIME('2015-05-16T17:22:04.920+02:00') AND DATETIME('2015-05-16T17:24:04.920+02:00')";