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Eng qimmat uchta mahsulot SQL order-by · limit Beginner 0%
Mijozlar qaysi shaharlardan SQL distinct Beginner 0%
A harfidan boshlanadigan ismlar SQL like · where Beginner 0%
Telefoni yozilmagan mijozlar SQL null-values · where Beginner 100%
Ombordagi tovar qiymati SQL select Beginner 0%
Har bir shahardan nechta talaba SQL group-by · aggregation Easy 0%
Guruhlarning o‘rtacha bali SQL group-by · aggregation Easy 0%
Kategoriyadagi narxlar oralig‘i SQL group-by · aggregation Easy 0%
Ombor hisoboti SQL aggregation Easy 0%
O‘rtacha bali 70 dan yuqori guruhlar SQL group-by · having Easy 0%
Buyurtma kimniki SQL join Easy 100%
Xodim qaysi bo‘limda SQL join Easy 0%
Harfli baho SQL case-when Easy 0%
Har yili nechta xodim ishga olingan SQL date-functions · group-by Easy 0%
Katta harflar va uzunlik SQL string-functions Easy 0%
O‘rtachadan ko‘p oluvchilar SQL subquery Medium 0%
Hech narsa olmagan mijozlar SQL subquery · left-join Medium 100%
Kim qancha xarid qildi SQL join · order-by · group-by Medium 0%
Bo‘limdagi eng katta maosh SQL join · subquery Medium 0%
Har bir kursga nechta talaba yozilgan SQL group-by · left-join Medium 100%
Bo‘limdagi ikki eng katta maosh SQL join · window-functions Hard 0%
Oyma-oy tushum SQL date-functions · window-functions Hard 100%
Uch kun ketma-ket SQL join · date-functions Hard 0%
Oraliqdagi yig‘indilar arrays · prefix-sums Medium 100%
Byudjetga sig‘adigan eng uzun oraliq two-pointers · arrays Medium 0%
Qancha mahsulot sig‘adi binary-search · sorting Medium 0%
Qavslar balansi data-structures · strings Medium 0%
Eng kam tanga dynamic-programming Medium 0%
Eng uzun o‘suvchi qism ketma-ketlik binary-search · dynamic-programming Hard 0%
Labirint graphs Hard 0%

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