Question

I am using this code to check whether a value (guid1) already exists in the ‘guid’ table:

string selectString = "SELECT guid" + "FROM trafficScotland" + "WHERE guid = " + guid1;

SqlCommand myCommand = new SqlCommand(selectString, myConnection);
String strResult = String.Empty;
strResult = (String)myCommand.ExecuteScalar();

 if (strResult.Length == 0)

But at the

 strResult = (String)myCommand.ExecuteScalar();

line, I get the sqlException error

Incorrent syntax near ‘guid’

Please show me what is wrong here?

Answer 1

selectString = "SELECT guid " + "FROM trafficScotland" + " WHERE guid = '" + guid1 +"'";

Notice space after guid