sorguyu aşağıdaki gibi düzenleyip dener misiniz?
aslında join kullanılabilirse o daha uygun olur gibi

SELECT a.scadaDate, a.scadaB1, scadaB3,

(SELECT COUNT(b.scadaB3) FROM spectrumAcmalari AS b WHERE b.scadaReasonForOpening LIKE '%SABIT%' and b.scadaB3=a.scadaB3) AS scadaSayi,

(SELECT COUNT(b.scadaB3) FROM spectrumAcmalari AS b WHERE b.scadaReasonForOpening = 'NULL' and b.scadaB3=a.scadaB3) AS scadaSayi2

FROM spectrumAcmalari AS a

GROUP BY a.scadaDate, a.scadaB1, scadaB3;

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(28/10/2022, 07:45)footprinting yazdı: XXXXXXX1 verisi 2020-05-01 tarihinde 2 adet var

hangi alanda bu ben sadece 1 tane gördüm?