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Introduction to SQL

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

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

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

NUMERIC
FLOAT
All of these
CHARACTER

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Introduction to SQL
Find all the cities whose humidity is 89

SELECT city FROM weather;
SELECT city WHERE humidity = 89;
SELECT humidity = 89 FROM weather;
SELECT city FROM weather WHERE humidity = 89;

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Introduction to SQL
The SQL keyword BETWEEN is used:

for ranges.
as a wildcard.
None of these
to limit the columns displayed.

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Introduction to SQL
In SQL, which command(s) is(are) used to change a table's storage characteristics?

ALTER TABLE
CHANGE TABLE
MODIFY TABLE
All of these

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Introduction to SQL
The command to remove rows from a table 'CUSTOMER' is:

DROP FROM CUSTOMER ...
DELETE FROM CUSTOMER WHERE ...
UPDATE FROM CUSTOMER ...
REMOVE FROM CUSTOMER ...

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