Question

I have two tables.

Table 1: supportstatus

clientid
company
status

Table 2: client
clientid
company
status
state

I am also using a table with 2 columns to seperate the grid view results. I am currently trying to make two queries that will return the clients with a disabled status in one table column and their corresponding states in the other. Any assistance with an explanation would be appreciate.

protected void queryClientCompanyName()
{
    string MyConString = "Driver={MySQL ODBC 5.1 Driver};Server=**;Database=support;User=**; Password=**;Option=3;";
    string queryString = "SELECT company FROM supportstatus WHERE status = 'disabled' Order By company";
    OdbcConnection conn = new OdbcConnection(MyConString);
    conn.Open();
    OdbcCommand command = new OdbcCommand(queryString, conn);
    OdbcDataReader reader = command.ExecuteReader();
    populateGrid(reader, GridView1);
    conn.Close();
    RecordCountLabel.Text = GridView1.Rows.Count.ToString();
}

protected void queryClientCompanyState()
{
    string MyConString = "Driver={MySQL ODBC 5.1 Driver};Server=**;Database=support;User=**; Password=**;Option=3;";
    string queryString = "SELECT cl.state FROM clients cl, supportstatus su WHERE cl.clientid = su.clientid  AND su.status='disabled' Order By cl.company";
    OdbcConnection conn = new OdbcConnection(MyConString);
    conn.Open();
    OdbcCommand command = new OdbcCommand(queryString, conn);
    OdbcDataReader reader = command.ExecuteReader();
    populateGrid(reader, GridView2);
    conn.Close();
}

Answer 1

You should only need the following query to replace both of yours:

SELECT su.Company
   , cl.state
FROM clients cl
INNER JOIN supportstatus su ON cl.clientId = su.clientId
WHERE su.status = 'disabled'
Order By cl.company

You want one query that will return both values so you know that they are related. It is because of this that you want to join the tables together. I just did a quick google search and W3schools has basic join information, so does techrepublic These should help you with the basic concepts of querying a database.