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Introduction to SQL

Introduction to SQL
The result of every SQL query is a table.

False
True

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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

0
10
5
9

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Introduction to SQL
SQL is:

a data sublanguage.
a DBMS.
an operating system.
a programming language.

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Introduction to SQL
The SQL statementSELECT ROUND(45.926, -1) FROM DUAL;

prints 50
is illegal
prints garbage
prints 045.926

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Introduction to SQL
How to select all data from student table starting the name from letter 'r'?

SELECT * FROM student WHERE name LIKE '_r%';
SELECT * FROM student WHERE name LIKE 'r%';
SELECT * FROM student WHERE name LIKE '%r%';
SELECT * FROM student WHERE name LIKE '%r';

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

True
False

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