COMPUTER SCIENCE AND ENGINEERING
SQL
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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With SQL, how do you select all the columns from a table named “Persons”?
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SELECT Persons
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SELECT [all] FROM Persons
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SELECT * FROM Persons
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SELECT *.Persons
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Explanation:
Detailed explanation-1: -SELECT * FROM <TableName>; This SQL query will select all columns and all rows from the table. For example: SELECT * FROM [Person].
Detailed explanation-2: -Answer: C. The character ‘*’ is used to select all the columns of the table.
Detailed explanation-3: -With SQL, how do you select all the records from a table named “Persons” where the value of the column “FirstName” is “Peter"? SELECT * FROM Persons WHERE FirstName=’Peter’;
Detailed explanation-4: -With SQL, how do you select all the records from a table named “Persons” where the value of the column “FirstName” ends with an “a”? Explanation: The SQL LIKE clause is used to compare a value to similar values using wildcard operators. 3.
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