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Introduction to SQL

Introduction to SQL
The keyword LIKE can be used in a WHERE clause to refer to a range of values.

False
True

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Introduction to SQL
'AS' clause is used in SQL for

Join operation.
Projection operation.
Rename operation.
Selection operation.

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Introduction to SQL
The SQL -92 wildcards are ____ and ____ .

asterisk (*); percent sign (%)
question mark (?); asterisk (*)
percent sign (%); underscore (_)
underscore(_); question mark (?)

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Introduction to SQL
The format SELECT-FROM-WHERE is the fundamental framework of SQL SELECT statements.

False
True

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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
Which SQL keyword is used to retrieve only unique values?

DIFFERENT
DISTINCT
DISTINCTIVE
UNIQUE

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