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Introduction to SQL

Introduction to SQL
Which SQL statement is used to update data in a database?

MODIFY
UPDATE
SAVE
SAVE AS

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Introduction to SQL
Which of the following join is also called as an 'inner-join'?

Equijoin
Non-Equijoin
Self-Join
None of these

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Introduction to SQL
Which command undo all the updates performed by the SQL in the transaction?

COMMIT
TRUNCATE
ROLLBACK
DELETE

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Introduction to SQL
A subquery in an SQL SELECT statement:

can only be used with two tables.
can always be duplicated by a join.
has a distinct form that cannot be duplicated by a join.
cannot have its results sorted using ORDER BY.

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Introduction to SQL
Let the statementSELECT column1 FROM myTable;return 10 rows. The statementSELECT ALL column1 FROM myTable;will return

more than 10 rows
None of these
less than 10 rows
exactly 10 rows

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Introduction to SQL
Which SQL keyword is used to retrieve only unique values?

DIFFERENT
UNIQUE
DISTINCT
DISTINCTIVE

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