Computers and Technology, 06.05.2020 00:24 stephstewart1209

The table T(A, B, C, D) has a B-tree index on the column B. Which of the followine requests may benefit from the index? Where necessary, define additional conditions under which the index will be beneficial. If the query cannot benefit from the index, suggest other solutions for improving its performance. a. SELECT * FROM T WHERE B = x; b. SELECT * FROM T WHERE B <> x; c. SELECT * FROM T WHERE B LIKE 'x'; d. SELECT * FROM T WHERE SUBSTRING(B, 1, 1) 'x'

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The table T(A, B, C, D) has a B-tree index on the column B. Which of the followine requests may bene...