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    • SELECT basics|SELECT basics
    • SELECT Quiz|quiz
    • SELECT from WORLD Tutorial|SELECT from world
    • BBC QUIZ|quiz
    • SELECT from Nobel Tutorial|SELECT from nobel
    • Nobel Quiz|quiz
    • SELECT within SELECT Tutorial|SELECT in SELECT
    • Nested SELECT Quiz|quiz
    • SUM and COUNT|SUM and COUNT
    • SUM and COUNT Quiz|quiz
    • The JOIN operation|JOIN
    • JOIN Quiz|quiz
    • More JOIN operations|More JOIN
    • JOIN Quiz 2|quiz
    • Using Null|Using NULL
    • Using Null Quiz|quiz
    • Self join|Self JOIN
    • Self join Quiz|quiz
  • Reference
    • SELECT|SELECT
    • FUNCTIONS|Functions
    • SELECT .. WHERE|SELECT .. WHERE
    • SELECT .. GROUP BY|SELECT .. GROUP BY
    • SELECT .. JOIN|SELECT .. JOIN
    • SELECT .. SELECT|SELECT .. SELECT
    • INSERT .. VALUES|INSERT .. VALUES
    • INSERT .. SELECT|INSERT .. SELECT
    • UPDATE|UPDATE
    • DELETE|DELETE
    • CREATE TABLE|CREATE TABLE
    • CREATE VIEW|CREATE VIEW
    • CREATE INDEX|CREATE INDEX
    • DROP|DROP
    • ALTER|ALTER
    • UNION|UNION
    • LEFT JOIN|LEFT JOIN
    • NULL|NULL
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