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Introduction to SQL

Introduction to SQL
The SQL statement that queries or reads data from a table is ________ .

QUERY
READ
SELECT
None of these

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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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Introduction to SQL
Count function in SQL returns the number of

groups.
distinct values.
values.
columns.

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Introduction to SQL
There is an equivalent join expression that can be substituted for all subquery expressions.

False
True

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Introduction to SQL
When three or more AND and OR conditions are combined, it is easier to use the SQL keyword(s):

LIKE only.
Both IN and NOT IN.
IN only.
NOT IN only.

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

prints 50
is illegal
prints 045.926
prints garbage

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