Question

I have a DBF file and I’m trying read it from c# code. I can read files successfully without applying any conditions or applying conditions for varchar type fields.My problem is I have to filter the records from the Date field (type:date). I have tried following ways,

SELECT * FROM D:\DBFreader\file.dbf where [RDATE] between 2/16/2006 12:00:00 AM and 2/20/2006 12:00:00 AM

above gives a syntax Error: missing operator

SELECT * FROM D:\DBFreader\file.dbf where [RDATE] between '2/16/2006 12:00:00 AM' and '2/20/2006 12:00:00 AM'

above gives a data type mismatch error

SELECT * FROM D:\DBFreader\file.dbf where [RDATE] between 2/16/2006 and 2/20/2006

above does not throw any exception, but does not return any records though there are matching records.

The same things happens for the where clause as well.
What can I do to filter records from a range

I’m using following code to read it

OdbcCommand cmd = new OdbcCommand();
OdbcDataAdapter da = new OdbcDataAdapter();
DataTable dt = new DataTable();

using (OdbcConnection connection = new OdbcConnection(connstring))
{
   connection.Open();
   cmd = new OdbcCommand(@"SELECT * FROM D:\DBFreader\file.dbf where [RDATE] between 2/16/2006 12:00:00 AM and 2/20/2006 12:00:00 AM", connection);
   cmd.CommandType = CommandType.Text;

   da.SelectCommand = cmd;
   da.Fill(dt);
}

Answer 1

OK –

I believe the problem is that dBase/xBase doesn’t support “between” for SQL dates

WORKAROUND:

@"SELECT * FROM D:\DBFreader\file.dbf where [RDATE] >= #2/16/2006 12:00:00 AM# and [RDATE] < #2/20/2006 12:00:00 AM#"

PS:
I know dBase syntax supports “date” literals (e.g. “2/16/2006”; I don’t know about “datetime” – plese try it and see.