Build Where Clause Dynamically in Ado.net C#

Question

I will be taking in around 1000 records at a given time and I have to determine if they are existing records or new records.

If they are existing I have to update th

Answer 1

I can only help you to write query for your request

        var recordCount = 1000;
        var query = "SELECT * FROM TableName WHERE";
        for (var i = 1; i < recordCount - 2; i += 3)
        {
            query += " (columnA = " + i + " and ColumnB = " + (i + 1) + " and ColumnC = " + (i + 2) + ") or ";
        }