Number of query values and destination fields are not the same (Union) - sql

Question

Running into this SQL error - number of query values and destination fields are not the same (Union). Using an Access database. The programList table has just two fields in it - userID and programID. Using parameters in my cs file. Here is the complete method:
public void AddProgramList (string program, int userID)
{
dbConnection.Open();
string sqlStmt = "INSERT INTO programs (program) ";
sqlStmt += "VALUES (#program)";
string sqlStmt2 = "INSERT INTO programList (userID, programID) " +
"SELECT userID " +
"FROM users" +
"WHERE userID = #userID " +
"UNION " +
"SELECT programID " +
"FROM programs" +
"WHERE program = #program;";
OleDbCommand dbCommand = new OleDbCommand(sqlStmt, dbConnection);
OleDbParameter param = new OleDbParameter("#program", program);
dbCommand.Parameters.Add(param);
dbCommand.Parameters.Add(new OleDbParameter("#userID", userID));
OleDbCommand dbCommand2 = new OleDbCommand(sqlStmt2, dbConnection);
OleDbParameter param2 = new OleDbParameter("#program", program);
dbCommand2.Parameters.Add(param2);
dbCommand2.Parameters.Add(new OleDbParameter("#userID", userID));
dbCommand.ExecuteNonQuery();
dbCommand2.ExecuteNonQuery();
dbConnection.Close();
}

Answer 1

If you printed out the SQL, you would see:
INSERT INTO programList (userID, programID) " +
SELECT userID FROM usersWHERE userID = #userID UNION SELECT programID FROM programsWHERE program = #program;
The error should be pretty obvious. You probably don't have a table called usersWHERE.
As I look at the problem, you are trying to insert two columns. So, I think you intend:
INSERT INTO programList (userID, programID)
SELECT userID, programID
FROM users, programs
WHERE userID = #userID AND program = #program;
Or, more simply:
INSERT INTO programList (userID, programID)
SELECT #userID, programid
FROM programs
WHERE program = #program;