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Introduction to SQL

Introduction to SQL
Which of the following join is also called as an 'inner-join'?

Equijoin
Self-Join
None of these
Non-Equijoin

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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
Indexes may be created or dropped at any time.

True
False

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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

5
10
0
9

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

False
True

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Introduction to SQL
Which of the following SQL commands can be used to add data to a database table?

INSERT
APPEND
UPDATE
ADD

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