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Introduction to SQL

Introduction to SQL
SUM, AVG, MIN, and MAX can only be used with numeric columns.

False
True

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

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

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Introduction to SQL
The SQL keyword GROUP BY instructs the DBMS to group together those rows that have the same value in a column.

False
True

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

True
False

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Introduction to SQL
Which of the following is the original purpose of SQL?

To define the data structures
All of these
To specify the syntax and semantics of SQL manipulation language
To specify the syntax and semantics of SQL data definition language

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Introduction to SQL
The ADD command is used to enter one row of data or to add multiple rows as a result of a query.

True
False

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