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Introduction to SQL

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

prints 50
prints 045.926
is illegal
prints garbage

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Introduction to SQL
Which of the following is valid SQL for an Index?

CHANGE INDEX ID;
REMOVE INDEX ID;
CREATE INDEX ID;
ADD INDEX ID;

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Introduction to SQL
'AS' clause is used in SQL for

Join operation.
Rename operation.
Projection operation.
Selection operation.

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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
A dynamic view is one whose contents materialize when referenced.

False
True

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Introduction to SQL
The SQL statement: SELECT Number1 + Number 2 AS Total FROM NUMBER_TABLE; adds two numbers from each row together and lists the results in a column named Total.

False
True

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