sql串聯

Question

我可以連接如下查詢嗎？ 如果沒有，我應該如何進行？ 我不想從$retrieveUnitExist讀取行，因為這浪費了另一步。

$retrieveUnitExist = "SELECT unitid FROM ESTATEUNIT WHERE BLOCK = 1";
$insertAddress = "INSERT INTO ADDRESS (value1, value2) VALUES ('1','".$retrieveUnitExist."')";

mysqli_query($conn, $insertAddress);

Answer 1

像這樣嗎

$insertAddress = "INSERT INTO ADDRESS (value1, value2)
                  SELECT '1', unitid FROM ESTATEUNIT WHERE BLOCK = 1";