Question 14: What is Index in SQL? A. Is a database table attribute, which speeds up searching data in a table. B. A method to join 2 or more tables together. C. Same function as Alias A is the correct answer =============== Link Hoc va de thi 2021
Question 42: In SQL, how can return all the records from the table “Persons” sorted in descending order by “FirstName”? A. SELECT * FROM Persons SORT BY ‘FirstName’ DESC B. SELECT * FROM Persons ORDER BY FirstName DESC C. SELECT * FROM Persons SORT ‘FirstName’ DESC D. SELECT * FROM Persons ORDER FirstName DESC REMOVE […]
Question 38: In SQL, how to select all the records from the table “Persons” where the value of column “FirstName” to be “Peter” and “LastName” to be “Jackson”? A. SELECT * FROM Persons WHERE FirstName=”Peter” AND LastName=”Jackson” B. SELECT * FROM Persons WHERE FirstName‘Peter’ AND LastName‘Jackson’ C. SELECT FirstName=”Peter”, LastName=”Jackson” FROM Persons A is the […]
09/10/2021 by admin Để lại bình luận 3 2 / 10 Category: PTLG CO BAN 2. Tập nghiệm của phương trình (sin x = 0) là A) (S = left{ {k2pi,,,k in mathbb{Z}} right}). B) (S = left{ { – frac{pi }{2} + k2pi,k in mathbb{Z}} right}). C) (S = left{ {kpi,,,k in mathbb{Z}} right}). […]
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