Question

I need to turn this query into an update statement. I will have to update the values from fields. Everything is already in place but the update statement.

Here is the select version of the query:

SELECT i.GoLiveDate, i.FirstBonusRun, i.TechFName, i.TechLName, i.TechEmail, i.TechPhone, i.WebISPFName, i.WebISPLName, 
              i.WebISPEmail, i.WebISPPhone, i.FullFillFName, i.FullFillLName, i.FullFillEmail, i.FullFillPhone, d.FName,
              d.LName, d.HomePhone, d.Email
              FROM NC_Information i
              INNER JOIN Distributor d
                ON d.DistID = i.ClientID
              WHERE clientID = @value

Is it possible to update two different tables from within the same query?

Here is the code I have so far:

public void Update (int ClientID)
{
    using ( var conn = new SqlConnection( GeneralFunctions.GetConnectionString() ) )
    using ( var cmd = conn.CreateCommand() )
    {
        conn.Open();
        cmd.CommandText =
        @"SELECT i.GoLiveDate, i.FirstBonusRun, i.TechFName, i.TechLName, i.TechEmail, i.TechPhone, i.WebISPFName, i.WebISPLName, 
          i.WebISPEmail, i.WebISPPhone, i.FullFillFName, i.FullFillLName, i.FullFillEmail, i.FullFillPhone, d.FName,
          d.LName, d.HomePhone, d.Email
          FROM NC_Information i
          INNER JOIN Distributor d
            ON d.DistID = i.ClientID
          WHERE clientID = @value";
        cmd.Parameters.AddWithValue( "@value", ClientID );
        cmd.ExecuteNonQuery();
    }
}

Answer 1

You can’t update multiple tables in one statement, but you can use a transaction to make sure that the updates are contingent upon one another:

BEGIN TRANSACTION

UPDATE SomeTable
SET SomeColumn  = 'Foo' 
WHERE SomeID = 123   

UPDATE AnotherTable
SET AnotherColumn = 'Bar'
WHERE AnotherID = 456    

COMMIT