scalar subqueries

[me-mahmood]

alsalam alikom
wht dos they means for (scalar) and i need examples pls

[elfatih_s]

اخي العزيز
ال scalar subquery هو subquery يرجع قيمة واحدة فقط لل query الاب
مثال :

select  student_no ,student_name from students where class_no = (select class_no from classess where class_name = 'science')

[me-mahmood]

thank you may brother