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Introduction to SQL

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

ROLLBACK
DELETE
COMMIT
TRUNCATE

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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.

True
False

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Introduction to SQL
SQL data definition commands make up a(n) ________ .

DDL
XML
HTML
DML

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Introduction to SQL
The HAVING clause acts like a WHERE clause, but it identifies groups that meet a criterion, rather than rows.

False
True

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Introduction to SQL
Indexes may be created or dropped at any time.

True
False

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Introduction to SQL
The format SELECT-FROM-WHERE is the fundamental framework of SQL SELECT statements.

False
True

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