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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
If you are going to use a combination of three or more AND and OR conditions, it is often easier to use the NOT and NOT IN operators.

True
False

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Introduction to SQL
Which of the following is the correct order of keywords for SQL SELECT statements?

SELECT, FROM, WHERE
WHERE, FROM,SELECT
FROM, WHERE, SELECT
SELECT,WHERE,FROM

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Introduction to SQL
A subquery in an SQL SELECT statement:

has a distinct form that cannot be duplicated by a join.
cannot have its results sorted using ORDER BY.
can only be used with two tables.
can always be duplicated by a join.

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

is illegal
prints 045.926
prints 50
prints garbage

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Introduction to SQL
Each index consumes extra storage space and also requires overhead maintenance time whenever indexed data change value.

False
True

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