7-mavzu. JOIN operatorlari
Quiz
•
Computers
•
University
•
Practice Problem
•
Easy
Turdali Jumayev
Used 1+ times
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15 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
JOIN operatori nima uchun ishlatiladi?
Bir nechta jadvallarni bog‘lab ma’lumot olish uchun
Yangi jadval yaratish uchun
Ustun nomini o‘zgartirish uchun
Ma’lumotni o‘chirish uchun
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
INNER JOIN nima qiladi?
Ikkala jadvalda mos keladigan yozuvlarni chiqaradi
Faqat chap jadvaldagi yozuvlarni chiqaradi
Faqat o‘ng jadvalni chiqaradi
Hech qanday yozuv chiqarmaydi
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
LEFT JOIN nima qiladi?
Chap jadvaldagi barcha yozuvlarni, va o‘ng jadvaldagi moslarini chiqaradi
Faqat mos yozuvlarni chiqaradi
Faqat o‘ng jadvalni chiqaradi
Hech narsa chiqarmaydi
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
RIGHT JOIN nima qiladi?
O‘ng jadvaldagi barcha yozuvlarni va chap jadvaldagi moslarini chiqaradi
Faqat chap jadvalni chiqaradi
Faqat mos yozuvlarni chiqaradi
Yangi jadval yaratadi
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
FULL JOIN nima qiladi?
Har ikkala jadvaldagi barcha yozuvlarni chiqaradi
Faqat chap jadvalni chiqaradi
Faqat o‘ng jadvalni chiqaradi
Faqat mos yozuvlarni chiqaradi
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
INNER JOIN natijasida mos yozuvlar bo‘lmasa nima chiqadi?
Bo‘sh natija (NULLsizlik) chiqadi
Chap jadval chiqadi
O‘ng jadval chiqadi
Barcha yozuvlar chiqadi
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
OIN bajarishda ON sharti nimani bildiradi?
Qaysi ustunlar orqali bog‘lanishni ko‘rsatadi
Qaysi ustunlarni chiqarishni bildiradi
Filtrlash shartini bildiradi
Tartiblash shartini bildiradi
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