COMPUTER SCIENCE AND ENGINEERING
SQL
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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$
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%
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=
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*
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Detailed explanation-1: -A query includes a list of columns to include in the final result, normally immediately following the SELECT keyword. An asterisk (” * “) can be used to specify that the query should return all columns of the queried tables.
Detailed explanation-2: -The second part of a SQL query is the name of the column you want to retrieve for each record you are getting. You can obviously retrieve multiple columns for each record, and (only if you want to retrieve all the columns) you can replace the list of them with *, which means “all columns".
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: -Use the INSERT command to enter data into a table. You may insert one row at a time, or select several rows from an existing table and insert them all at once.
Detailed explanation-5: -The syntax is: DISPLAY; The DISPLAY command must be placed immediately after the query statement on which you want it to take effect.