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Introduction to SQL

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

Non-Equijoin
None of these
Equijoin
Self-Join

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Introduction to SQL
A SELECT statement within another SELECT statement and enclosed in square brackets ([...]) is called a subquery.

True
False

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Introduction to SQL
Which command undo all the updates performed by the SQL in the transaction?

TRUNCATE
ROLLBACK
COMMIT
DELETE

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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
To remove duplicate rows from the results of an SQL SELECT statement, the ________ qualifier specified must be included.

SINGLE
DISTINCT
ONLY
UNIQUE

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Introduction to SQL
The ADD command is used to enter one row of data or to add multiple rows as a result of a query.

True
False

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