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Introduction to SQL

Introduction to SQL
Which SQL statement is used to delete data FROM a database?

ALTER
COLLAPSE
REMOVE
DELETE

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Introduction to SQL
Scalar aggregate are multiple values returned from an SQL query that includes an aggregate function.

True
False

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Introduction to SQL
Which of the following is illegal?

SELECT SYSDATE - (SYSDATE + 2) FROM DUAL;
None of these
SELECT SYSDATE - SYSDATE FROM DUAL;
SELECT SYSDATE - (SYSDATE - 2) FROM DUAL;

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Introduction to SQL
To remove duplicate rows from the results of an SQL SELECT statement, the ________ qualifier specified must be included.

SINGLE
ONLY
DISTINCT
UNIQUE

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Introduction to SQL
What is the meaning of LIKE '%0%0%'

Feature has more than two 0's
Feature ends with two 0's
Feature begins with two 0's
Feature has two 0's in it, at any position

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Introduction to SQL
The Microsoft Access wildcards are ____ and ____ .

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

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