COMPUTER SCIENCE AND ENGINEERING
SQL
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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In an SQL SELECT statement querying a single table, according to the SQL-92 standard the asterisk (*) means that:
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all columns of the table are to be returned.
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all records meeting the full criteria are to be returned.
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all records with even partial criteria met are to be returned.
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None of the above is correct.
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Explanation:
Detailed explanation-1: -16. In an SQL SELECT statement querying a single table, according to the SQL-92 standard the asterisk (*) means that: all columns of the table are to be returned.
Detailed explanation-2: -SELECT SQL keyword which shows what we wish to display or retrieve. The * (asterisk) symbol signifies “everything, all columns”. FROM is an SQL keyword that denotes the tables being used.
Detailed explanation-3: -The SELECT statement is used to select data from a database. The data returned is stored in a result table, called the result-set.
Detailed explanation-4: -The correct answer is Select, where, group by, having.
Detailed explanation-5: -The SELECT query of a subquery is always enclosed in parentheses.
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