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Introduction to SQL

Introduction to SQL
The SELECT command, with its various clauses, allows users to query the data contained in the tables and ask many different questions or ad hoc queries.

True
False

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

prints garbage
prints 50
is illegal
prints 045.926

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Introduction to SQL
SQL is a data sublanguage.

True
False

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Introduction to SQL
Data manipulation language (DML) commands are used to define a database, including creating, altering, and dropping tables and establishing constraints.

True
False

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

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Introduction to SQL
Which of the following must be enclosed in double quotes?

All of these
Dates
Strings
Column Alias

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