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Introduction to SQL

Introduction to SQL
What is the full form of SQL?

None of these
Simple Query Language
Structured Query List
Structured Query Language

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Introduction to SQL
What operator tests column for the absence of data?

NOT operator
EXISTS operator
IS NULL operator
None of these

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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
The SQL keyword(s) ________ is used with wildcards.

IN only
LIKE only
IN and NOT IN
NOT IN only

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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
The HAVING clause acts like a WHERE clause, but it identifies groups that meet a criterion, rather than rows.

False
True

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