PHP PDO Pernyataan yang disiapkan mengikat nilai NULL

Ini pertanyaan Anda:

SELECT c.*, COUNT(d.servername) as servercount, d.controller
FROM customers C JOIN
     customerdata d
     ON c.id = d.customer
WHERE isVdi = :isVdi AND d.controller = :controller
GROUP BY d.customer
ORDER BY c.name ASC, c.environment ASC;

Sayangnya, apa pun = NULL tidak akan pernah kembali benar. Sayangnya, MySQL tidak mendukung standar ANSI NULL -safe comparator is not distinct from . Tapi dengan senang hati itu memiliki alternatif. Anda dapat mencoba ini:

SELECT c.*, COUNT(d.servername) as servercount, d.controller
FROM customers C JOIN
     customerdata d
     ON c.id = d.customer
WHERE isVdi = :isVdi AND
      d.controller <=> :controller
GROUP BY d.customer
ORDER BY c.name ASC, c.environment ASC;