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Introduction to SQL

Introduction to SQL
Which one of the following sorts rows in SQL?

GROUP BY
ORDER BY
SORT BY
ALIGN BY

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Introduction to SQL
A dynamic view is one whose contents materialize when referenced.

True
False

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Introduction to SQL
A subquery in an SQL SELECT statement:

cannot have its results sorted using ORDER BY.
can always be duplicated by a join.
has a distinct form that cannot be duplicated by a join.
can only be used with two tables.

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Introduction to SQL
Table Employee has 10 records. It has a non-NULL SALARY column which is also UNIQUE.The SQL statementSELECT COUNT(*) FROM Employee WHERE SALARY > ANY (SELECT SALARY FROM EMPLOYEE);prints

10
9
5
0

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Introduction to SQL
You can add a row using SQL in a database with which of the following?

INSERT
ADD
MAKE
CREATE

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Introduction to SQL
Let the statementSELECT column1 FROM myTable;return 10 rows. The statementSELECT ALL column1 FROM myTable;will return

more than 10 rows
None of these
less than 10 rows
exactly 10 rows

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