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Introduction to SQL

Introduction to SQL
The SELECT statement SELECT 'Hi' FROM DUAL WHERE NULL = NULL; Outputs

FLASE
Nothing
Hi
TRUE

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Introduction to SQL
The SQL keyword BETWEEN is used:

to limit the columns displayed.
as a wildcard.
for ranges.
None of these

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Introduction to SQL
The result of a SQL SELECT statement is a ________ .

table
form
report
file

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Introduction to SQL
............. joins two or more tables based on a specified column value not equaling a specified column value in another table.

EQUIJOIN
NON-EQUIJOIN
OUTER JOIN
NATURAL JOIN

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Introduction to SQL
A subquery in an SQL SELECT statement is enclosed in:

brackets -- [...].
parenthesis -- (...) .
braces -- {...}.
CAPITAL LETTERS.

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Introduction to SQL
Which of the following command makes the updates performed by the transaction permanent in the database?

COMMIT
DELETE
ROLLBACK
TRUNCATE

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