SQL带有值的变更表

Question

I am faced with a vexing issue. I created a table using the function:

$sql="INSERT INTO Aircraft (Type, EngineType, Speed)
      VALUES ('$type', '$engine', '$mph')";

But I now want to add a column, so I use the function:

$sql = ("ALTER TABLE Aircraft ".
       "ADD COLUMN SubsonicORSupersonic VARCHAR(20) ".
       "AFTER Speed;")

But how do I attach the VALUES command to the above sql function? You can attach VALUES to INSERT INTO , but it seems you cannot attach VALUES to ALTER TABLE . How can I get around this?

Answer 1

$sql = ("UPDATE Aircraft ".
             "SET SubsonicORSupersonic = $data; ")