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Introduction to SQL

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

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

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Introduction to SQL
Which of the following is a valid SQL type?

FLOAT
NUMERIC
All of these
CHARACTER

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

Nothing
FLASE
TRUE
Hi

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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.

False
True

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Introduction to SQL
SQL is a data sublanguage.

False
True

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Introduction to SQL
Which operator performs pattern matching?

BETWEEN operator
None of these
LIKE operator
EXISTS operator

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