41 Essential SQL Interview Questions and Answers
ANSI-standard SQL specifies five types of JOIN clauses as follows:. INNER JOIN (a.k.a. “simple join”): Returns all rows for which there is at least one match in BOTH tables.This is the default type of join if no specific JOIN type is specified.. LEFT JOIN (or LEFT OUTER JOIN): Returns all rows from the left table, and the matched rows from the right table; i.e., the results will contain ...
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